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Building Science
Coatings and Liquid-applied Membranes— what's in a name?

Liquid-applied roof membranes (LAM) and roof coatings (aka, maintenance coatings) are not only here to stay, their use is on the rise. This blog takes a look at how the building code and the roofing industry generally differentiate between liquid-applied roof membranes and roof coatings. There is confusion because the intended use of each is different, yet many of the materials are the same for both applications. Here's what you need to know to help understand and differentiate between the two.IntroductionCoatings have been used in the construction and roofing industries for a very long time! They have been made from many different materials--from beeswax and pitch some 5000 years ago, to lacquers and varnishes just a couple thousand years ago, to our current polymer-based materials. According to the Roof Coating Manufacturers Association, "the most dramatic advance in coating properties has come in the past 40 years, with the development of polymers1." Polymer-based coatings are used on plaza decks, parking garages, balconies, playgrounds, and roofs, for example, to provide a level of water-resistance and an aesthetically pleasing surface. Polymer-based liquid-applied membranes are used as the water-proofing layer for new roofs, replacement roofs, and roof re-cover systems. The common polymer-based materials include acrylics, silicones, and urethanes. More information about these materials can be found here.The spotlight is on these types of polymers because the materials we use for coatings are quite often also being used as liquid-applied membranes. How do we categorize and define these different installations that have different intended uses when both applications use essentially the same set of materials? This blog takes a close look at each of these product categories—coatings and liquid-applied membranes—to find their similarities and differences. And hopefully to provide clarity around the use of terms and definitions of use.Market ShareIn 2017, The Freedonia Group published a research study titled, "Liquid-Applied Roof Coatings in the US by Product and Subregion." According to that report, 11.85 million squares (1.185 billion square feet) of liquid-applied roof coating were installed in 2016. Approximately 40% was installed in the South, with the remainder essentially evenly split between the Northeast, Midwest, and West regions.The Freedonia Group reported a number of key findings that help explain the increased use of coatings."The South will be the leading US regional market for roof coatings in 2021, boosted by a high level of interest in cool roofing products and in protecting roofs against storm damage.The West will see solid growth as communities amend building codes to mandate the use of cool roofing.Liquid-applied roof coating demand in the Midwest and Northeast will be supported by rising use of roof coatings to rejuvenate older roofs instead of engaging in more costly reroofing projects."Note: The Freedonia Group's report does not separate market share based on liquid-applied materials used as roof coatings versus liquid-applied materials used as roof membranes.The use of coatings and liquid-applied membranes is increasing for a number of additional reasons as well.The use of materials that can be applied at ambient temperature is welcomed by an installer. There are no super-heated materials or open flames therefore reducing specific safety concerns.Materials are typically provided in containers sized for easy transport to and from rooftops.Common low-cost installation tools are used—brooms, brushes, squeegees; and simple, low-cost spray equipment.Using liquid-applied membranes can reduce waste created by a tear off.These materials are commonly light colored so they are reflective to help improve energy efficiency.Depending on the design (intent) and application of polymer-based materials, they can be used to extend the life of an existing roof when used as a coating, or to provide a warranted or guaranteed, waterproofing roof covering when used as a liquid-applied membrane.Defining the TermsOne way to help sort out the difference between coatings and liquid-applied membranes is to understand current definitions used in the industry. The International Building Code (IBC) is a good place to start since it is considered to be consensus-based.International Building CodeThe International Building Code does include a definition for coating, but does not include a definition for liquid-applied membrane."ROOF COATING. A fluid-applied, adhered coating used for roof maintenance or roof repair, or as a component of a roof covering system or roof assembly."IBC's definition of Roof Coating tells us three things.Coatings are fluid-applied and adhered (to a substrate)Coatings are used for maintenance or repair "Roof Repair" is defined as "Reconstruction or renewal of any part of an existing roof for the purposes of correcting damage or restoring pre-damage condition." Coatings can be a component of a roof system or roof assembly (which are the same according to ICC's definitions) "Roof Assembly" is defined as "A system designed to provide weather protection and resistance to design loads. The system consists of a roof covering and roof deck or a single component serving as both the roof covering and the roof deck. A roof assembly can include an underlayment, a thermal barrier, insulation or a vapor retarder." "Roof Covering" is defined as "The covering applied to the roof deck for weather resistance, fire classification or appearance." "Roof Covering System" is a "Roof Assembly" per IBC. Realistically, IBC's definition of Roof Coating doesn't get us that much closer to differentiating coatings and liquid-applied membranes, except that coatings are intended for maintenance and repair. And per IBC's definition, coatings can be used for Roof Repairs to "correct damage or restore pre-damage condition," but that is not how coatings are generally intended to be used.Taking a look at how Chapter 15 of IBC is arranged gives a bit of insight into IBC's perspective on coatings and liquid-applied membranes. Section 1507, Requirements for Roof Coverings, has and continues to include all low-slope and steep-slope materials used as roof coverings that are recognized by the code. This includes materials such as asphalt, wood, and slate shingles, as well as modified bitumen and single-ply roofing (and myriad others). The ICC has always included a section specifically for Liquid-applied Roofing within Section 1507, but there has never been a section for Coatings (until this year—more on that in a bit). To that end, the IBC is essentially saying Liquid-applied Membranes are categorized similarly to all other membranes that are used as roof coverings and their intended use is for "weather resistance, fire classification or appearance" (from IBC's definition as shown above). Because liquid-applied membranes are considered to be roof coverings, roof systems that use a liquid-applied membrane need to be tested for fire, wind, and impact… like any traditional membrane roof system.The liquid-applied membrane subsection within Section 1507 includes ASTM standards for materials not only used as liquid-applied membranes, but it includes the polymer-based materials (e.g., acrylics, polyurethanes, silicones) that are also intended to be used as coatings. This led to confusion within the code requirements, specifically how code officials would enforce the application of a coating product on an existing roof--as a new roof or as a maintenance item.To help with clarification and code enforcement, new language was added to the 2018 IBC in the Reroofing Section that stated a roof coating can be applied to (essentially) any existing roof without triggering reroofing requirements. The 2015 IBC and earlier versions only stated that coatings could be applied over an existing Spray Polyurethane Foam without removing any existing roofs. The IBC 2018 code language is as follows:"Section 1511.3, Roof Replacement. Exception 4: The application of a new protective roof coating over an existing protective roof coating, metal roof panel, built-up roof, spray polyurethane foam roofing system, metal roof shingles, mineral-surfaced roll roofing, modified bitumen roofing or thermoset and thermoplastic single-ply roofing shall be permitted without tear off of existing roof coverings."The additional language in the 2018 IBC was a very important step in distinguishing between coatings and liquid-applied membranes.The I-Codes were further revised regarding coatings and liquid-applied membranes in the 2021 IBC; a new section was added--Section 1509, Roof Coatings. This was an entirely new section, and importantly, Roof Coatings are not a subsection within Section 1507, Roof Coverings. This strengthens the differentiation from a code perspective that coatings are not considered to be a new roof covering. However, the IBC 2021 remains without a definition for liquid-applied roofing or liquid-applied membrane. The code ultimately relies on manufacturers' intentions for their products as the differentiating factor between coatings and liquid-applied membranes.ASTMUnfortunately, ASTM D1079, "Standard Terminology Relating to Roofing and Waterproofing" does not define either term.Industry PerspectiveWhat does GAF, a leading supplier of both systems, say about each? From GAF's page, Liquid-Applied Coating Solutions, the following descriptions are provided."What is a Liquid Membrane Roofing System?A liquid-applied roofing system consists of multiple components that come together to form a fully adhered, seamless, and self-flashing membrane. Components include liquid applied coatings and mesh membranes to create a true liquid membrane system that preserves and protects the integrity of the building." Examples of some of the leading products can be found here."What is a Roof Coating System?Roof Coatings are designed for extending the life of existing structurally sound roofs. GAF Roof Coatings are specially formulated to extend the life of roofs while protecting them from damaging effects of weather and the environment such as UV light, water and wind. GAF offers roof coatings in a variety of different technologies such as acrylic, silicone and polyurethanes to meet many different building needs and budgets."According to GAF, a liquid-applied roofing membrane protects the integrity of the building (like any traditional membrane-type roof system) and coatings are designed for extending the life of structurally sound roofs.The Roof Coating Manufacturers Association (RCMA) has a thorough description of a roof coating. RCMA is appropriately focused on the makeup of a coating (i.e., higher solids content, high quality resins) to differentiate roof coatings from what is commonly called "paint." One concept from RCMA in particular stands out—because roof coatings are "elastomeric and durable films," they provide "an additional measure of waterproofing" and can "bridge small cracks and membrane seams." The roofing industry recognizes a coating's ability to provide an amount of weather resistance / restorative properties, but this characteristic (i.e., crack bridging) is difficult to test for and quantify. And it is worth repeating, a roof coating is primarily intended to extend the service life of structurally sound roofs, not necessarily be the waterproofing layer. That is the intent of a liquid-applied membrane.FM ApprovalsLiquid-applied membranes are considered to be roof coverings by the IBC, and therefore they must be tested and have approval listings. Approval listings are used to show that systems have been tested and comply with the code requirements for roof system properties like fire-, wind-, and impact-resistance.RoofNav—New ConstructionTo that end, performing a search using the Assembly Search function within FM's RoofNav software results in a number of Approval Listings for "Liquid Applied Systems" used for New Roofs. With no manufacturer selected, the RoofNav search resulted in more than 10,000 Approval Listings for liquid-applied roofs used for new construction!Performing a second search using GAF as the manufacturer results in nearly 250 Approval Listings for "Liquid Applied Systems" used as new roofs. The nearly 250 Approval Listings include applications primarily over DensDeck™ and spray foam. When a liquid-applied membrane is used over a substrate board, such as a DensDeck™ board, a reinforcing fabric embedded between two foundation coats is used. The use of the substrate board is more common for new construction or roof replacement projects and is not common when re-covering an existing roof.An example RoofNav listing is shown here. It includes a finish coat and foundation coat with fabric over DensDeck that is adhered to polyiso, and the polyiso is adhered to a concrete deck.Wind-uplift capacity of liquid-applied membrane roof systems can be quite high. The example above has a wind uplift rating of 270 psf! Where would such a high-capacity roof system even be needed? Here's a blog that discusses design wind pressures.RoofNav—Re-coverIn addition to their use as new roofing, one of the primary attributes of liquid-applied membranes is their use over an existing roof. Searching RoofNav using GAF and "Re-Cover" as the Application results in nearly 200 Approval Listings.If a liquid-applied roof system is used in a re-cover application, the use of the reinforcing fabric seems to be tied to the specific substrate. Looking through GAF's RoofNav Approval Listings for Re-cover Liquid-Applied Systems, reinforcing fabric is used when re-covering traditional multi-ply asphaltic membrane roof systems, or TPO and PVC membranes. However, when the substrate is a standing-seam type metal roof panel, a metal-faced composite panel, or spray foam, the fabric is not listed as a necessary component of an Approval Listing.It's important to recognize that an FM Approval Listing also provides information about the internal fire rating, exterior fire rating, and hail ratings. Many liquid-applied roof systems achieve Class A Exterior Fire ratings as well as Moderate or Severe Hail ratings. For a short tutorial on using RoofNav's Assembly Search feature, watch this video.In SummaryThe following chart is intended to provide examples of similarities and differences between coatings and liquid-applied membranes.ConclusionSimply put, coatings are used to provide protection from the elements and help extend service life. Coatings are not installed as 'membranes' so they are not intended to seal leaks or be considered "waterproof". Liquid-applied membranes are considered to be just that—membranes—and are used as the covering in new and re-cover roof systems. Liquid-applied membranes are tested as systems and have approval listings just like traditional asphaltic, modified bitumen, and single-ply roof systems.References:1RCMA.org/history-of-roof-coatings

By James R Kirby

April 07, 2023

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Commercial Roofing
How PVC Experts Can Help Design Specialized Roofing Projects

With the growing popularity and versatility of PVC roofing systems, GAF has responded by building a team of PVC experts to aid architects, specifiers, and the design community in project success. These highly trained and experienced professionals offer 1:1 support to help answer customers' questions and unique needs when working with PVC on roofing projects, and are here to help you!PVC, or polyvinyl chloride, is a single-ply thermoplastic roofing membrane. The material's characteristics help it thrive in particularly challenging applications. In fact, PVC roofing systems have a proven track record in the US, first introduced in the 1970s after making their debut in Germany a decade earlier.Here's a look at the benefits of PVC roofing systems as well as the guidance and support offered by the PVC experts at GAF.PVC Roofing Advantages and ApplicationsWhile several materials are available for use in roofing systems, PVC has been identified as a particularly long-lasting option. Accordingly, it's steadily grown in popularity nationwide.David Allor, senior area PVC specialist, joined the GAF team in 2022 as a PVC expert. His role was created specifically to support roof designers. Allor has an extensive background in the commercial roofing industry and extensive knowledge about PVC as a high-performance roofing solution."The industry refers to it as a very spec-driven product, and I believe what they're speaking to is a specifier's preference to work with a product that's been well established in the market and field tested," Allor shares. "It has the ability to provide protection against chemical exposure* and stand up well to challenging environments."While PVC may be a spec-driven product, it's also application-driven. Allor explains that PVC roofs may help provide protection for restaurants, food manufacturers, and packaging plants—any facility using animal fats where oils may be exhausted.* He also says that even if the building itself isn't exhausting gases, grease, or chemicals, it's important to consider the buildings and structures that surround it, as their exteriors may be subjected to exhaust that could degrade roofing systems.*Supporting the Design CommunityAs North America's largest roofing materials manufacturer, GAF has equipped teams with the resources and specialists needed to supply customers with more than just products. In recent years, the company built a solid team of PVC specialists that cover the entire US. These specialists assist customers with PVC specifications, roof system designs, and whatever else designers need to ensure successful project outcomes.Whether your project or design firm is based in the Northeast, Southeast, Southwest, Midwest, or West Coast, a PVC specialist is positioned to help. Allor explains the team of GAF PVC specialists is active in the organizations specifiers belong to, including the American Institute of Architects, the Construction Specifications Institute, and the International Institute of Building Enclosure Consultants.Allor describes the team's role as supporting the customer and connecting them to other GAF project support teams that can help. For instance, he said he called on a leading architectural design firm in the Boston area—and two months later, someone reached out for assistance with a specific project needing a tight turnaround."Literally within 12 hours of them reaching out to us, we replied and committed to three pertinent deliverables, those being a Tapered ISO Design Package, an Assembly Letter confirming all FM Requirements, and last but not least, a conference call the next day with the Building and Roofing Science team to go over three critical transitional details." Allor says.Committing to Successful Project OutcomesThe PVC specialists at GAF are focused on one goal: helping architects, specifiers, and the roofing design community achieve successful project outcomes through a high-performing PVC roofing system. With professionals like Allor providing insight and guidance, you can rest assured your PVC project will be in good hands.Ready to get started on your next PVC roofing project? Explore the different PVC roofing solutions available, and visit this page to find your local PVC roofing specialist who is ready to assist you.*GAF warranties and guarantees do not provide coverage against exposure to chemicals, grease, oils, animal fats or exhaust. Refer to gaf.com for more information on warranty and guarantee coverage and restrictions.

By Karen L Edwards

April 22, 2024

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In Your Community
How Attending the GAF Roofing Academy Changed One Graduate's Life

Meet Austin Teague, recent GAF Roofing Academy graduate who shares his transformational journey from ball field to the roof. Prior to the GAF Roofing Academy, he was involved in sports, worked in customer service, but lacked the experience needed to break into the roofing industry. Once he graduated from the GAF Roofing Academy, doors were then opened for him, leading to well-paying jobs as an installer and later as a salesperson, where he is currently on track to meet his financial goals.Attending the two-week program proved to be a life-changing decision for Austin, providing him with the tools and confidence needed to succeed. The course not only equipped him with technical expertise, but also instilled in him the ability to educate customers effectively. Take a listen as Austin shares his story of how he found clarity and direction in his professional life, enabling him to thrive in the industry and build a successful future for himself and his family.Are you interested in a career in the roofing industry? Look for a Roofing Academy course in your area. Video TranscriptMy name is Austin Teague. I'm originally born in Tyler, Texas. Moved to Washington when I was a kid at ten. Well, prior to joining the Roofing Academy and, you know, taking my skills to that test, I was sports, strictly sports. Everything in my life I would, you know, I'd work a customer service job. I was in the, you know, the retail industry. I worked at Walgreens, but my personal life was hectic. It was football practice, baseball practice. It was always something going on.There was always something to do. Everything when it comes to roofing, for me, started after the Roofing Academy. When I tried to get into the roofing industry before going to the Academy, nobody wanted me because I had no experience. They're going to have to train everybody on the job. But because of the roofing academy, because I knew what I was going to do day one, I knew what my job was. I couldn't run into any hiccups because I knew what showing up day one was going to look like.[00:00:56.770]So they gave me a GAF certificate with my name, the location I trained out of, and then when I graduated. And what I did with that is I took it to every single applicant or job interview I had because I wanted them to know that I have this certificate. Not saying I have it, but also bring it, so they can see it.After the academy, I landed a job at 28 an hour as an installer, which is substantial in this living, making life, making payments. And then after that, I got bumped up to 32 an hour when I was working in New Mexico. And now that I'm sales, I'm straight commission. But in this month, I'm on pace to hit 20,000. Our goal at Tristate is to educate the customers firsthand. So being at the Roofing Academy allowed me to know roofing like the back of my hand. As an installer, as a sales, as an owner, you got to see the value in the systems. And it allowed me in my head to build those value, actually explain it to the customers. Where is this number coming from? Well, it's coming from this material because this material is going to cost more, of course, but it's obviously better.[00:01:58.920]I think someone coming to the Roofing Academy right away, no experience, is going to set you up for success. That's what you want. You want to be set up for success. You want to be as many tools as you can in your tool belt to get you to that point you want to be in life. And showing up to the Roofing Academy, it changed my life drastically. I didn't know what I was going to do. I literally didn't know, if roofing wasn't the pathway for me- what was the next plan?I was just grateful. I mean, I was one day on indeed looking for jobs and I saw the Roofing Academy post on indeed looking for academy students, and I thought, why not? What's two weeks out of my life that I get to change it? If I get an opportunity to change it and that two weeks changed my life. There's no time wasted. You're here from nine to three or nine to four at the latest for your classes.You're with guys that you actually enjoy being around. The guys in my class or in the class today, they're fun guys. They all get to make mistakes and learn from each other. And it just makes me grateful that I got that opportunity to make something of myself. I'm not just another guy on the street.[00:03:00.340]I don't know what my life's going to look like in the next six months, but I guarantee it's not going to slow down. I'm going to work harder than ever. I know I got two kids at home. I have something to push me. I would say that all the success started with the Roofing Academy because my life before the Roofing Academy was kind of on a snowball effect. It had started from when I left college and then came home and it kind of just started snowballing. One thing after another was another problem, another problem. Bills at 18, going into debt. You're 18, your life isn't, you're going to ruin your life already. So you got to figure some out. And I figured it out. I got lucky enough that I found GAF and you know they still treat me well to this day. I have my Academy teacher's phone number and I call them up and help him out from time to time, and he helps me out from time to time.We still get along. And it was two weeks of my life that I knew the guy, and he still gives me a call and checks up on me and tries to: How are you doing in roofing? You still in roofing? You still making a name for yourself? You still doing what you said you were going to do? And I am. It's just good to have someone to talk to. Even if you're in this industry for ten years, I guarantee you GAF CARE will probably still give you a call and check on you. That's just what they do.

By GAF Roof Views

April 12, 2024

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Residential Roofing
Hip and Ridge Cap Shingles Beat Out Cut 3-Tabs

Are you hand-cutting 3-tab shingles instead of using perforated hip and ridge cap shingles? You're not alone. At one time, 3-tab shingles were the market leader, so hand-cutting and installing 3-tabs on ridges and hips was standard practice.Times have changed. Hip and ridge cap shingles are the new industry gold standard. They're faster to install, save you money in labor costs, and result in a better looking, higher-quality, more wind-resistant product.Here's why it's time to make the change from using hand-cut 3-tab shingles to pre-manufactured hip and ridge caps on residential roofs.Hip and Ridge Caps Can Give Roofers Big BenefitsHip and ridge caps were specially designed for use on a roof's ridges and hips. Here are the ways they improve roof installation speed and quality in ways that hand-cut 3-tabs don't.Save time and labor: Pre-manufactured hip and ridge caps have perforations that roofers can quickly tear and install on the roof. Perforations reduce labor costs by eliminating time-consuming hand cuts that 3-tab shingles require. Plus, hip and ridge caps typically have larger exposure than hand-cut 3-tabs, so they not only look more polished, there are also fewer pieces to install.Perforations can reduce waste as well as human error and material loss due to cutting. "Some pre-manufactured hip and ridge caps are even packaged individually in boxes, so that they can be removed from the box and fastened without any tearing or cutting needed," says Jeff Avitabile, a senior product manager for GAF steep slope accessories.Reduce blow-off: Hip and ridge caps are pre-manufactured with properly positioned adhesive to help shingles fight against wind. Factory-applied adhesive reduces wind-related callbacks. As an example, GAF Hip and Ridge Cap Shingles come with Dura Grip™ Self-Seal Adhesive that helps seal shingles down tight for a high-quality, wind-resistant installation.Boost roofing reputation: Happy customers mean five-star reviews, word-of-mouth referrals, and fewer callbacks. For example, with GAF hip and ridge caps used as part of a GAF Lifetime Roofing System, customers are eligible for enhanced warranty and wind-protection options, improved curb appeal (thanks to factory color match), and a wider range of finish styles.What Customers Can Gain with Hip and Ridge CapsThe best relationship is one where everyone benefits. Beyond the financial and reputation perks a contractor can receive when installing hip and ridge caps, customers could enjoy some perks, too.Stronger warranties: Customers who install hip and ridge caps (instead of cut 3-tab shingles) win big with their warranties. "The pre-manufactured hip and ridge caps are designed to provide up to a lifetime warranty, matching the warranty of the laminate shingles, while 3-tab shingles are typically only 20 or 25-year warranty products," explains Avitabile. "So, when installing a lifetime warranty laminate shingle, why install only a 20- or 25-year warranty 3-tab ridge cap?"Peace of mind: Hip and ridge caps can give customers better protection from leaks, thanks to proper design and adhesive pre-applied during production. For customers in extreme weather climates, GAF offers the Seal-A-Ridge® ArmorShield™ SBS Modified Ridge Cap Shingles that helps keep even the roughest weather out. Seal-A-Ridge® ArmorShield™ customers may be eligible for additional insurance discounts, too.Improved aesthetics: In addition to safety and protection, customers want their roofs to look good. "Today's pre-manufactured hip and ridge caps are available in high profile or other distinct designs that help frame and provide the perfect finishing touch on a laminate shingle roof," says Avitabile. "In contrast, 3-tab shingles result in a flat finished appearance on the hips and ridges of a laminate shingle roof."Plus, pre-manufactured hip and ridge caps are factory color blended for a complementary match for the laminate shingles. "This helps avoid the all-too-common ugly mismatch on the roof with the laminate shingles," says Avitabile.Hip and Ridge Caps Are an Easy ChoiceOverall, hip and ridge caps are good for roofing professionals and customers alike. They reduce wind blow-off and wind-related callbacks. They can save time and money on installation labor, reduce waste, and can provide up to a lifetime limited warranty*. Best of all, they look better, resulting in a boosted reputation for you.Ready to give hip and ridge caps a try? Connect with CARE, the Center for the Advancement of Roofing Excellence at GAF to learn more through cutting-edge training and roofing education. CARE also provides other tips and techniques that help improve roofing speed and quality.*See GAF Shingle & Accessory Limited Warranty and GAF Roofing System Limited Warranty for complete coverage and restrictions.

By Annie Crawford

November 30, 2021

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Your Home
Timeless Shingle Colors for Your Home

Given the investment you make in a new roof or reroofing project—and how long your roof will last—timeless shingle colors are a reliable way to help ensure your home looks elegant (despite changing trends) in the long term. That's why GAF shingles are not only contstructed to protect your home for many years, they're also designed to beautify it by mixing durability with classic color design. Many other timeless shingle colors partner beautifully with a wide variety of home exteriors.TraditionalTraditional homes will most often have black and gray roof shingles. Black and gray are sophisticated yet neutral colors, so they can be paired with almost any exterior home color. The most common traditional exterior color, however, is white. There are many different shades and types of whites in various undertones, so don't write off the color too quickly: instead think of it as a canvas on which you can paint practically anything. White (in whatever iteration) is anything but boring!Home featuring Timberline HDZ shingles in CharcoalRusticRustic homes tend to have brown and red roof shingles that pair nicely with earth-toned exterior sidings like beige, brown, brick, or stone. As the name suggests, you'll tend to find these homes nestled in the countryside, where earth-toned and other colors that blend comfortably with nature are used to relate a home to its surroundings. Since rustic hues have warm undertones of brown, yellow, and red, you should ensure the exterior color and the roof shingles have corresponding undertones so they balance and provide a cohesive effect.Home featuring Grand Sequoia shingles in Weathered WoodNeutralMore neutrally colored homes work well with warm-hued roof shingles like beige, brown, or gray with gold and copper undertones. They complement home exteriors in similar color palettes like cream, taupe, caramel, or even brick. The beauty of neutral shingles is that you can paint your home's exterior a darker shade than your roof. The neutral undertones of your roof will balance it out, making it feel less dense.Home featuring Timberline Natural Shadow shingles in Weathered WoodBoldBolder homes might have blue and green roof shingles—traditional colors with additional flair. You may find these more strident colors more difficult to pair, but they can withstand shifting design trends when chosen well. Green-shingled homes match well with yellow undertones: cream, beige, yellow, or even green. For a little more character, but without losing a traditional effect, you can use green shingles on a home with a brick facade. Blue-shingles pair best with cooler undertones: cream, gray, or another blue. And for more flair, blue-shingled homes can look stunning with a stone facade.Home featuring Timberline HDZ in Hunter GreenWith any of these timeless shingle colors and styles, you should always consider your home's setting. Part of creating an enduring look for your home means accounting for and blending it with its surroundings — so that it seems naturally suited—rather than going with a current trend that you might love but that clashes with your home's immediate environment. As a rule of thumb, you'll almost always want to use colors and materials that connect your home to its backdrop.Learn more about timeless shingle color pairings (as well as more recent trends) and get inspired by a wide range of possible new looks for your home using the GAF Roof Style Guide.

By Cristina Soriano

April 21, 2023

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In Your Community
GAF Celebrates Major Strides in Manufacturing Sustainability

Manufacturing sustainability is a top priority for GAF. In 2022, the company announced its 2030 Planet Goals to "focus on operational improvements, product transparency, and the introduction of circularity in the asphaltic shingle industry."Looking to lead positive change while considering the long-term impact of its business on the planet, GAF identified several goals, including:Diverting 1 million tons of roofing materials from landfills while integrating recycled shingle materials into new shingle productsDiverting 80% of manufacturing waste from landfills, recycling all shingle and TPO scrap that results from the manufacturing process, and recycling or reusing fiberglass mat scraps and coresReducing embodied carbon and operation carbon throughout its manufacturing and operationsAchieving Environmental Product Declarations for its core products, conducting life cycle assessments, and generating 2.5 GW of power from solar roofs in partnership with GAF EnergyMeeting these goals takes time, resources, innovation, and ingenuity, all backed by a team working to build a better world. Every GAF location is striving to meet the company's goals. Looking back on the progress made in 2023, some impressive accomplishments are bringing the company closer to achieving full manufacturing sustainability.Residential ManufacturingThe GAF Mt. Vernon, Indiana, shingle manufacturing plant worked toward achieving sustainable operations through robust recycling efforts. The team established a shingle recycling outlet estimated to divert thousands of tons of asphalt shingles from landfills annually. This has eliminated thousands of dollars in disposal fees and reduced transportation costs.The Mt. Vernon staff found creative ways to keep complex waste materials out of landfills, including working with a local golf course that could take the plant's waste sand. The team implemented an internal recycling program that includes cardboard and packaging materials, increasing its waste diversion score.Commercial ManufacturingAt the Gainesville, Texas, plant that manufactures TPO and Polyiso, team members earned the area's first waste diversion certification for both products' waste streams. They also earned a recycled content certification for each.The plant established a trial program with a plastics recycler to reprocess TPO skin material for reuse in manufacturing new material. Recycling and reusing would divert thousands of tons of waste from landfills and use recycled materials in manufacturing flexible TPO for flashings.The plant also developed a program with a local recycling company that serves as a single source to take its pallets, large cardboard boxes, facers, paper, and plastics.Sustainability All-StarsRecycling and manufacturing sustainability programs wouldn't be possible without the people behind the initiatives. GAF is proud to spotlight these individuals who went above and beyond to meet the company's sustainability goals.Ben AnselmanAs part of the Mt. Vernon team, Anselman was critical to starting the plant's core recycling program. He initiated repairs to an existing baler and established a program for recycling the super sacks. His creativity sparked the partnership with the local golf course to divert aggregate waste from landfills. In addition, he was the champion for the shingle recycling outlet project and repurposed an existing compactor to reinstate a cardboard recycling initiative.Christina Talladira and Amy WilsonThese teammates lead the core recycling program at the Tampa, Florida, manufacturing plant. They worked together to establish aggregate and shingle recycling programs with their local recycling company. Talladira and Wilson consistently look for ways to divert waste streams from landfills. They also handle the administrative needs accompanying these programs, including scheduling loads and tracking waste.Jeremy TisdaleAt the Tuscaloosa, Alabama, plant, Tisdale took the initiative to improve its core recycling program and set up a cardboard recycling program. He also championed a baler trial for glass mat cover and core waste, developing standard operating procedures and a job safety analysis. He was the innovator behind diverting the plant's plastic waste from landfills. He created a program where stretch film and shingle bundle packaging waste is saved in Gaylord boxes and then baled whenever the plant has downtime.Pete WeyrensIn Gainesville, Texas, Weyrens is the champion behind the plant's recycling efforts, establishing relationships with the local recycling company. He also organized the flexible TPO skin material trials. This effort will divert thousands of tons of waste from landfills and use recycled materials to manufacture flexible TPO for flashings.Leslie PeelsAfter the plant in Cumming, Georgia, saw a drop in its year-over-year waste diversion rate, Peels stepped in to turn those numbers around. Leading the effort to separate recyclable materials from regular waste, the Cumming location saw an impressive increase in keeping waste out of the landfill. Peels also set an example in data collection and analysis to keep the plant's sustainability goals on track.TJ Jenkins and Todd WinsteadJenkins and Winstead represent the TPO team at the Mt. Vernon manufacturing plant. Working together, they used their knowledge and experience in the TPO manufacturing process to help earn the plant's recycled content certifications. They also found a way to divert calcium chloride from local landfills and continue to work closely with the sustainability team to support waste diversion efforts.Sustainability PromiseGAF is committed to "Protect What Matters Most," and that includes people, communities, and the planet. Its sustainability promise is an opportunity to invest in a healthy future for everyone. Learn more about that commitment in its sustainability report.

By Karen L Edwards

April 11, 2024
Your Home
How to Conduct a Roof Inspection from the Ground

As a homeowner, it's always a good idea to stay on top of routine maintenance that will help protect your biggest investment—and that includes a regular roof inspection. Catching leaks or damage early can help preserve your roof's longevity and prevent major issues.But getting up on a ladder to walk around on your roof can be dangerous. It's safer to visually inspect your roof from the ground. Read on to learn how to conduct a routine roof check, so you'll know when it's time to bring in a professional.Walk around the Entire PropertyTo see all the angles of your roof, you'll first need to walk around your home, looking up and down. Check for any fallen shingles or debris on the ground or any missing spots on the roof where shingles may have broken off.Using binoculars, look for moss, piles of leaves, algae, or other debris on the roof. If left unaddressed, this debris can damage the structure by trapping moisture, eventually causing it to seep into the sheathing beneath your shingles. After some time, this can develop into serious water damage and leaks.Look for Damaged ShinglesExcessive heat and moisture in your attic, typically caused by inadequate ventilation, may compromise the roof system's performance or even cause shingles to become misshapen or damaged. Loose, curled, cracked, or buckled shingles can leave room for water to seep in and damage your roof's underlayment.If you see shingles that don't look right or are missing altogether, consult a roofing professional. They can help you understand if it's a simple fix or indicative of something larger, meaning it could be time to replace the roof.Check Your Gutters, Fascia, and SoffitNext, look for obvious damage, such as holes, dents, mold, or cracks. Gutters clogged with branches, leaves, or dirt can prevent water from draining off the roof. Also, asphalt shingles contain small, gravel-like granules, and if you see this material has ended up in your gutters, it can mean the shingles are nearing the end of their lifespan. Inspect the downspout to be sure it's clear of debris, too.While you can remove leaves or sticks yourself, hire a gutter cleaning service for a larger blockage. If you need to climb a ladder to reach any part of your gutters, it's best to leave that to an insured service.Peek at the Flashings from the BalconyIf you have a balcony or other way to safely view your roof from above, get a closer look at the flashings. These are the metal components that redirect water from your roof, located around your chimney, vent pipes, and dormers.Flashings are often the most vulnerable areas around your roof and the first to show wear and tear. If they're dented, rusty, or otherwise damaged—or if the caulk is brittle or cracked—water can get into your roof's interior structure and lead to rot.Examine the Attic or CrawlspaceAfter your exterior inspection, head inside. Some hidden roof damage or water infiltration can be seen from your attic. Using a flashlight, look for signs of rotting wood joists, sunlight coming through the joints, water damage on the floor, or any vulnerable spots around vents, skylights, or the chimney. Also check your rafters, insulation, and any other wooden structures for signs of mold, moisture, and rot.Scan Your Home's InteriorSome early signs your roof might be leaking are obvious from inside the house. Look for damp spots near the fireplace, water stains on the pipes that vent your furnace or water heater, dark patches, or peeling paint on your ceilings.When to Go with a ProPerform a visual roof inspection twice a year—in the spring or early summer and again in the fall. Conducting regular inspections helps you get to know your roof and spot any issues immediately.If your roof looks like it's in good shape after your inspection, you probably don't need to call in a licensed roofing contractor. However, if you've seen any worrisome signs of damage or leaks, it's best to book a professional inspection before the issues worsen. A GAF-certified roofing contractor* can make any necessary repairs, so your roof continues to protect your most valuable asset.*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the GAF Contractor Terms of Use.

By Wendy Helfenbaum

March 22, 2024
Your Home
3 Disadvantages of a Standing Seam Metal Roof

When you're choosing the right roofing material for your home, you might rule out metal. Metal roofs are often expensive and noisy, and they can look wavy or distorted (known as oil canning). However, GAF has an alternative that allows you to get the durability and aesthetic appeal of a metal roof—without the high cost and finish concerns.What Is a Standing Seam Metal Roof?A standing seam metal roof is a series of mechanically attached metal panels. The attachment points, called standing seams, create a thin ridge along the outside of each panel. These seams allow the metal to expand and contract as the temperature changes without sacrificing the roof's ability to protect your home from moisture. The panels are attached to the roof structure under each seam. The fasteners don't show externally, giving the roof a consistent look.Disadvantages of a Standing Seam Metal RoofStanding seam metal roofs are known for their smooth aesthetic and durability. But they can have three significant downsides.1. PriceBetween the cost of metal and the need for professionally trained installers, standing seam roofs can cost two to three times as much as a standard asphalt shingle roof. The material cost depends on the metal's thickness, the requested finish, and the roof's size. Installation can also cost more because it takes specialized training to install the panels correctly. If they're not, they can experience leaks and metal expansion.2. NoiseWhen it rains on a metal roof, it's noisy. Attaching the roof panels to solid wood decking and adding rigid insulation can help reduce the noise level, but you can't completely get rid of it. You might like hearing the pitter-patter of raindrops on your roof during a storm. But if you don't want this extra noise in your home, you may want to avoid a metal roof.3. Oil CanningOil canning is a finish issue that occurs when the metal panels are fastened too closely together. The panels have room to expand lengthwise but not sideways. The finish begins to look like it's bubbling and continues to get wavier over time. Note that oil canning is an aesthetic issue caused by improper installation, not a material defect. The roof will continue to offer protection but will appear warped.An Alternative to Standing Seam Metal RoofsThe GAF TimberSteel™ premium metal roofing system provides an alternative to standing seam metal roofs. Here are some features to keep in mind.1. Lower costThe TimberSteel™ system can be easier on the budget and easier to install than a traditional standing seam metal roof. While installation costs will vary by location, GAF's system offers more efficient installation than traditional standing seam panels, giving you the opportunity to save additional time and money.2. BeautyInstead of sacrificing looks for durability, the GAF TimberSteel™ system is made with an embossed vertical grain, giving the appearance of traditional roof shingles, with the strength of steel. It is specifically designed to help avoid common issues, like oil canning, that traditional metal roofs present. The TimberSteel™ system is also available in a variety of colors to suit your home and taste.3. Durable finishAs the first metal shingle from GAF, the TimberSteel™ Premium Metal Roofing System is constructed out of GALVALUME® steel and coated with a combination of aluminum and zinc, which help to protect against corrosion. The GAF TimberSteel™ system also passes UL's toughest impact-resistance test — UL 2218 Class 4.In addition, metal roof systems are completely recyclable when reaching the end of its useful life, making them a great choice for the environment.While GAF's new metal roofing system is currently only available in select areas, you can learn more and sign up to receive information about the TimberSteel™ system, including updates on availability in your area, by visiting gaf.com/metal.

By Dawn Killough

March 22, 2024
Residential Roofing
When Is the Best Time to Replace a Roof?

If every day was sunny, mild, and a pleasant 75 degrees, there'd be little reason to wonder about the best time to replace a roof. Of course, not everyone lives in areas with ideal weather conditions, as climates vary greatly across the country.So if a client ever asks, "When is the best time to replace a roof?" your answer will likely vary based on where they live and what each season is like. However, you can share some general pointers in response. Here's what to consider for each season to help answer the question, "when is the best time to replace a roof?"SpringSpringtime is traditionally recognized as the kickoff of roofing season, as outside temperatures begin to warm and activity increases. Thanks to melting ice and snow, it's also the time of year that homeowners may want to have their roofs checked out for damage.While spring offers outdoor temperatures that are more friendly for workers, the season also typically comes with an increased chance of severe thunderstorms (and potentially tornados, depending on the region). Spring is usually a good time to schedule a roof replacement if you just monitor the weather forecast for major events to help reduce the chance of delays.SummerWith spring showers in the rearview, most areas of the country see longer stretches of nice weather during summertime, which lends itself well to working outside. Accordingly, summer tends to be the most ideal time for installing a new roof.But with potentially hot days, when is the best time to replace a roof in the summer? Workers will need to start as early in the day as possible because temperatures are usually cooler in the morning. Depending on the forecast temperatures, the job may need to be spread over a few days, so most of the work can be done in the morning hours before it gets too hot. It's also wise to remind customers that workers will need to have breaks in the shade and access to water to stay hydrated.FallThe autumn months can be an equally good time for a roof replacement as summer, as the hot and hazy days have passed, and severe weather isn't as common. The only exception to this is if you're working in an area prone to hurricanes. Hurricane season runs through the end of November and can cause project delays.In addition to the favorable weather, fall is a popular season for roof replacement because many property owners want to fortify their homes and buildings with a new roof before the winter months.WinterIn some areas of the country, it may be possible to continue roofing installations year-round, including during the winter. In southern regions, for example, roofing replacements can often be completed in the winter, as there's less chance of inclement weather. Temperatures may drop, but not as drastically as in areas that see ice and snow more regularly. Of course, it's still important to reference the relevant local forecast when scheduling upcoming work.Sustained stretches of very cold weather does not constitute suitable weather for the installation of asphalt shingles. All self-sealing shingles must be exposed to warm, sunny conditions for several days before they completely seal. Before sealing occurs, shingles are vulnerable to blow-offs and wind damage. Shingles installed in fall or winter may not seal until the following spring. Shingles that are not exposed to direct sunlight, adequate surface temperatures, or that are not fastened or installed properly may never seal. Failures to seal, blow-offs, and wind damage under these circumstances result from the nature of self-sealing shingles, and are not covered under most manufacturer's warranties. Be sure to follow the manufacturer's instructions for proper installation. While most provide guidance about cold weather installations, it will ultimately be up to you to exercise discretion about when to move forward with an installation vs. postponing the work until more favorable weather conditions are present.Other Factors That May Affect Project TimingWhile weather is likely the leading factor that can disrupt scheduled roofing work, if you want to best answer your client's question of "when is the best time to replace a roof?" you'll need to take other factors into account when setting timeline expectations for property owners. One such consideration is the lead time needed for materials. If your customer chooses an uncommon color or a specialty product, it may take longer for materials to arrive.Another factor to weigh is your own backlog. If your production calendar is booked weeks out, clearly communicate the timing to your customers with the knowledge that weather events could impact the schedule. Regularly communicating with customers and setting accurate expectations are key to a positive experience.Looking to learn more roofing best practices and further expand your knowledge base? Check out GAF's CARE Contractor Training Center to help build your skill set and receive valuable training.

By Karen L Edwards

February 12, 2024

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Your Home
Best Roofing Materials and Colors for Energy Efficiency
Want to save money on your heating and cooling bills and keep your home feeling pleasant year-round, regardless of the weather outside? Opting for an energy-efficient roof might be the way to go.You can replace your existing roof with a new system that uses energy-efficient materials and colors. For instance, while a roof's color may seem like an aesthetic choice, it can play a part in keeping a house cooler in the summer by reflecting sunlight. Meanwhile, the best roofing materials for energy efficiency can help with thermal emittance and keep a house warmer in the winter.Here's a comprehensive overview of energy-efficient roofs, why color and material matter, and why you might consider updating your home's roof.Benefits of Energy-Efficient RoofsAside from offering protection from the outside elements, reducing your home's environmental impact, and enhancing its curb appeal, energy-efficient roofs can offer several benefits. With energy-efficient roofing materials, homeowners may notice cost savings through a reduction in energy consumption, and more interior comfort during particularly hot or cold weather conditions. The lifetime of a roof may even be extended, depending on manufacturer warranties. All of these factors can positively impact the resale value of your home when it's time to sell.Additionally, local laws may require your home to meet certain energy standards, which an energy-efficient roof can help with. For example, due to Title 24, California homes must comply with specific cool roof requirements. GAF shingles like Timberline HDZ® RS Shingles and Timberline® CS Shingles have been rated by the Cool Roof Rating Council (CRRC) for use in Title 24 projects. At GAF, a primary focus is building sustainable products that not only adhere to changing building standards, but also help create a more sustainable future.Most Energy-Efficient Roofing MaterialsGenerally, the most energy-efficient roofing materials are metal, tile, and asphalt. Here's how each of these materials differ.MetalMetal roofs are known for their longevity. Metal is also considered one of the best roofing materials for reflecting sunlight, which results in improved energy efficiency. Its strong insulation properties help keep the interior at a comfortable temperature while keeping out hot (or cold) exterior air. Lastly, metal roofs are environmentally friendly, as most of the material is recyclable.TileCommonly made from clay and slate, tile roofs are another energy-efficient option. Tile roofs are often seen in the Southwest, where daily temperatures can reach triple digits and the sun beats down most of the day. This roofing material sometimes comes preheated to help reduce heat absorption in sunny weather and high-temperature areas. You can also add coatings to the roof to further improve its reflectivity once it's installed.AsphaltWhile asphalt shingles are a popular choice across homes in the United States, they aren't known to have a lot of solar-reflecting ability. That said, many new energy-efficient asphalt shingles are equipped with solar-reflecting granules.For example, GAF Timberline® CS Shingles can help keep your attic cool and allow you to use your home's air conditioning system less. And GAF Timberline HDZ® RS Shingles, which are rated by the Cool Roof Rating Council, come in several light and dark finishes, so you can choose your color scheme. These shingles offer excellent performance and can withstand strong wind speeds, while giving you the same look as traditional asphalt shingles.Best Roof Colors to Reflect HeatLight roof colors tend to reflect more sunlight and heat than darker colors. Popular light colors used for energy-efficient homes are white, light gray, and light brown.White is the most effective roof color to reflect heat. According to the US Department of Energy, a white roof stays coolest because it can reflect anywhere from 60% to 90% of sunlight. Meanwhile, other products typically reflect 30% to 60% of sunlight. Darker colors tend to absorb more heat, with black roofs absorbing the most heat followed by brown and dark gray.Shingles That Reflect Heat Regardless of ColorThough darker colors tend to absorb more heat, you may want a darker roof to match your home's aesthetics. For example, if you want your home's siding to stand out, a dark-colored roof is more favorable than a light one.Today, you don't have to decide between color and energy efficiency: modern shingles, like GAF cool roof shingles, can still reflect heat despite their dark shade. For instance, GAF Timberline HDZ® RS+ Shingles are offered in charcoal, hickory, aged chestnut, and other rich colors while still maintaining their high energy efficiency. You can choose the color that best fits your home's design without having to sacrifice your roof's energy efficiency.When Color May Not Matter as MuchKeep in mind your local weather and your property's features. If your home doesn't get as much sun or is covered in shade by nearby trees, the color of your roof may not matter as much when it comes to solar reflectance.Other Ways to Improve Roof Energy EfficiencyApart from color and roofing material, you can take other steps to improve your roof's energy efficiency.InsulationAttic insulation protects your roof during any season. In the summer, it reduces the transfer of heat coming in from outside. While your roof material is the first line of protection, you can think of insulation as your second line of defense.Insulation also protects your home against humidity and can prevent pests from getting inside your home. During the winter months, attic insulation can also prevent ice dams that can lead to expensive damage.VentilationIf your roof doesn't have proper ventilation, heat will always make its way inside. Proper ventilation allows the warm air inside to constantly shift out through the vents and be replaced with cooler air. Apart from regulating temperatures, it reduces condensation, which can result in mold, and keeps your insulation in good condition. Adding roof and attic vents while ensuring insulation isn't covering any airflow is the best way to ensure good ventilation.Updating Your Roof with Modern MaterialsFor more help navigating the variety of energy-efficient roofing materials available, speak to a local contractor. These professionals can tell you what's most popular in your area and help you understand the advantages you could enjoy after upgrading to a more energy-efficient roof.
By Mark Soto
March 22, 2024
Your Home
5 Types of Roofing Technology That Make Buying a Roof Easier
For years, replacing your roof meant scheduling an in-home visit with a salesperson, looking at shingle colors on sample boards, and then waiting days or weeks to receive a written quote. But recent advancements in roofing technology have simplified the process for both contractors and homeowners. You can now quickly and easily visualize the design, estimate material costs, and establish a project plan before work begins.Whether you're buying a new roof or simply having it repaired, here are five of the latest advancements in roofing technology that could help your planning process.1. Design ProgramsWhen purchasing a new roof, choosing the color can be one of the hardest parts. The shingles you choose will protect your home for years to come, so you want to ensure the color complements your home and neighborhood. But it can be challenging to imagine what the finished roof will look like.Fortunately, technology has simplified this part of the process. Programs such as GAF Virtual Remodeler allow you to upload a photo of your home (or choose a model home) and virtually try on different colors and styles. You can feel confident about your design decisions before you purchase materials.2. Aerial ImageryContractors can use high-resolution aerial imagery to see a bird's-eye view of your home and assess your roof's current condition, depending on how recent the satellite image is. They can evaluate the roof's health, deem whether certain areas of your surrounding property need to be protected, and note any extra safety precautions that might be necessary for the work.The imagery tool helps speed up the overall process. Contractors don't need to come out to your home to understand the complexity of your roof, and you don't need to make time in your schedule for a site visit.3. Aerial Measurements and Estimating SoftwareGoing a step further, technology companies have combined aerial imagery with other software programs to calculate the measurements of a home's roof. These measurements are then input into estimation programs and used to quickly generate a material estimate for your new roof's installation.This means you can receive your project estimate within hours—not days—and you can be confident in the estimate's accuracy. Once you know the total cost of the materials, you can better plan your budget.4. All-in-One Project PlatformsIn an attempt to provide a high level of customer service and satisfaction, many roofing professionals have been tapping technologies provided by the manufacturers themselves. These all-in-one platforms streamline the roofing sales process, allowing contractors to remotely perform a number of tasks and virtually collaborate with homeowners, while ensuring they are using the most accurate and up-to-date information from the manufacturer.Using these kinds of digital tools, roofing professionals can inspect your home to create estimates. They can then meet with you virtually (or schedule an in-person consultation, if you prefer) to review your project and the related options for your home. You can also sign your contract and easily make your payment electronically.5. Online Shopping ToolsEvery day, millions of homeowners shop online for essential items that get delivered to their doors. Since there's nothing more essential to your home than its roof, why not research and buy yours online?That's exactly what GAF Master Elite Contractor Gunner Roofing owners Andrew and Eddie Prchal had in mind when they developed the Gunner Estimator. The brothers designed the program to enable homeowners to shop online for a roof. With a focus on improving the overall customer experience, the Prchals wanted to take the hassle out of purchasing a roof. The result is a roofing technology that provides a seamless process for homeowners.Creating an Intuitive ExperienceAll of these technological advancements help to streamline the process of getting work done on your roof, saving you time and potentially money. Whether you're getting your roof repaired or completely replaced, roofing technology can assist. Ready to get started on your new roof? Look for a certified contractor,* with access to roofing technology programs provided by GAF.*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the GAF Contractor Terms of Use.
By Karen L Edwards
March 18, 2024
Your Home
Does Moss on a Roof Die in Winter?
As it gets colder, you might wonder: does moss on a roof die in winter like other pesky plants? It's a common myth. However, while you might hope winter weather will eliminate the moss, this isn't the case. Even if the moss looks dried out when temperatures drop, it goes dormant and absorbs water like a sponge. Before long, it will continue growing and become more difficult to get rid of as it spreads across your roof, even after the winter season.Why You Should Remove Moss from Your RoofIf you don't remove moss from your roof, it can wreak havoc on shingles, eating away at their protective coating. Moss roots also grow in between shingles and underneath the structure. This can degrade the shingles and push them apart as temperatures drop, allowing water to penetrate and leak into your home.Moss growth can also prevent proper water drainage and result in bacteria or mold growth, rotten underlayment, and damaged framing. It compromises the roof's ultraviolet protection, too. Left to grow into a thick layer, moss can reduce your roof's lifespan.The Difference between Moss and AlgaeIt's also important to know the difference between moss and algae, and how to prevent or remove both to extend the life of your roof. Moss is a herbaceous plant that absorbs nutrients and water through its leaves, producing spores to reproduce. It spreads across your roof as it grows. Algae are flat, slimy, green aquatic plants that lack leaves, stems, or flowers. They tend to grow on moist areas of your roof, causing dark stains. Algae are usually found in areas where water drips overhead. If you suspect algae on your roof, consider installing algae-resistant shingles.How to Remove Moss from Your RoofSince the answer to 'does moss on a roof die in winter?', is no, now's a good time to hire a professional roofer to get rid of it. Moss is resilient, and you can't simply remove it by hand. They'll remove the moss using a chemical solution, and they can replace any damaged shingles to restore your roof's integrity.It's best to rely on a professional who can eliminate the moss while also inspecting your roof for damage. Don't try to use a pressure washer or any weed killers not designed for moss, as these can stain or damage your roof.How to Prevent Moss GrowthSince moss thrives in damp, shady spots, trimming trees to allow more sunlight onto your roof can help deter its growth. Also, regularly clear away leaves, twigs, and other debris, which helps moss grow, and clean your gutters frequently to prevent water buildup. In addition to these tasks, scheduling regular roof inspections can help you catch any issues early.You can also install a zinc strip, such as GAF Master Flow® Zinc Moss & Mildew Preventer, near the roof ridge to help protect your roof against moss, algae, and mildew growth. The metal strip oxidizes over time, and as water washes over the roof plane, it creates an undesirable environment for moss.By proactively removing moss and preventing its return, you'll protect your biggest investment: your home. Contact a GAF-certified roofing contractor* to ensure it's removed effectively.*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the GAF Contractor Terms of Use.
By Wendy Helfenbaum
March 09, 2024
Your Home
Does a New Roof Increase Home Value?
There are many factors that can potentially impact a home's value, but if you're looking to build equity in your home for an upcoming move, or sale of the home, you may be wondering: does a new roof increase home value? While the added value of a new roof may not recover the full cost of installing one, it's important to keep in mind that a new roof can help impact the value of a home in more ways than one. Everything from the roofing materials used to your existing roof's condition can affect whether it's worth replacing. Here's how a new roof could impact your home's value.How Can a New Roof Increase Home Value?A new roof is a great way to enhance your home's curb appeal. Since a roof is one of the first features people notice when looking at a home, a visually-appealing one can potentially lead to a higher value. On the other hand, an old roof with damaged shingles can lower a home's value because of its poor appearance.A new roof may also make potential buyers more comfortable spending a little more money on a home since they probably won't have to deal with an expensive roof replacement shortly after the purchase. Many roofs also come with a transferable warranty, which can be a great selling point when you put your home on the market.How Much Can a New Roof Increase Home Value?According to a 2023 Cost vs Value report from Remodeling Magazine, a roof replacement adds an average resale value of $17,807 to the price of a home. Depending on the cost of your roof replacement, this means you may or may not recover the total cost in the sale of your home, but in certain circumstances, getting a new roof is still beneficial, depending on your roof's condition. As the most common type of roof in the United States, asphalt roof shingles, such as GAF Timberline HDZ® Shingles can be a great choice for a new roof to help increase the value of your home.Should You Replace Your Roof before You Sell?Whether you should replace your roof before selling depends on several factors, and the question "does a new roof increase home value?" is just one of them. If, for instance, your roof is visibly older, it can lower curb appeal, impacting your home's value. Old roofs may also be damaged or have problems like broken or buckled shingles, sagging, water leaks, or granule loss, which can contribute to a lower selling price.Additionally, most home inspectors survey the roof and reveal any issues to the buyers before closing. Issues can make it more challenging to sell your home, as most people don't want to deal with costly roof repairs right after buying a house.On the other hand, if your roof is relatively new or in good condition, it may not need to be replaced. If you're not sure, it doesn't hurt to have a roofing professional inspect it before you decide to replace it.If you want to install a new roof, find a reliable roofer in your area. A GAF-certified roofing contractor* can install a high-quality roof that will help you sell your home.*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the GAF Contractor Terms of Use.
By Mark Soto
March 06, 2024

Residential Roofing
What Are Ladder Hooks?
As a roofing contractor, keeping yourself and your employees safe is crucial, which involves using the right equipment. Ladder hooks, sometimes referred to as roof hooks, are used to secure a ladder over the top of a roof's ridgeline. They're an essential piece of safety equipment for steep-slope roofing work.How Do Ladder Hooks Work?These hooks resemble a shepherd's crook that hooks over the roof's ridgeline and stays put with an attached T-bar to secure it to the other side of the ridge. The bottom of the crook has a smaller hook that holds the ladder and prevents it from slipping or sliding down the roof. Ladder hooks are typically made from heavy-duty steel and can support several hundred pounds. They essentially turn the ladder into a more stable set of stairs, creating a safer and more efficient work environment for roofing professionals, especially during steep-slope work.Most hooks also feature a rubber wheel that can help you get the ladder safely up onto the roof. Once you secure the hook on the rungs of the ladder, roll the ladder up the slope (on its back). When it passes the roof ridgeline, flip the ladder over to secure the hooks over the top of the ridgeline.Why Should You Use a Ladder Hook?According to the American Ladder Institute, 500,000 people are treated for injuries from using ladders every year, with 300 of those injuries leading to fatalities. With newer home styles featuring more dramatic rooflines with steep pitches, you may find yourself facing 10:12, 12:12, and higher pitches more regularly. Ladder hooks can help make working on these roofs safer.They can provide stability and security on lower-pitched roofs, too. You may also want to use them for performing repairs around skylights or chimneys, especially if the roof surface is icy or slippery. And they can provide secure footing in cases of suspected damage, such as a weak or rotting deck.These safety devices are designed to prevent the ladder from damaging shingles, so there's no downside to using them.Can a Ladder Hook Replace Other Safety Measures?Using a ladder hook can make you feel more secure and stable on a steep pitch. But you shouldn't forego other safety measures, such as using a personal fall arrest system consisting of lifelines, lanyards, and deceleration devices attached to an anchor point and connected to the body harness. Remember, the anchorage should be able to support 5,000 pounds per employee. Ladder hooks are designed to secure the ladder to the rooftop—not to secure a person or prevent them from falling.How Do You Choose the Right Ladder Hook?To find the right ladder hook, contact your ladder's manufacturer to see if it has a hook designed to work with its ladders. If it doesn't offer any, review the ladder hook manufacturer's guidelines to see what types of ladders are best suited for its hook. If your ladders are due for replacement, you can also look for manufacturers that offer kits with both the ladder and the hook.For more learning opportunities and resources to help you succeed in your roofing business, visit the GAF Center for the Advancement of Roofing Excellence (CARE).
By Karen L Edwards
March 18, 2024
Residential Roofing
How a WindProven™ Limited Warranty Can Benefit Property Owners in Hurricane Country
If you operate in a hurricane-prone area, or a location that experiences severe, windy weather, you can provide homeowners with valuable peace of mind by informing them about the WindProven™ Limited Wind Warranty offered by GAF.1What Does the WindProven™ Limited Wind Warranty Entail?As a result of years of innovation and testing, GAF has the confidence to offer an industry-first wind warranty with no maximum wind speed limitation on Timberline® Shingles with LayerLock® Technology when the shingles are installed with the required combination of four qualifying GAF accessory products.1 The patented LayerLock® Technology on Timberline® Shingles mechanically fastens together the two layers of a Timberline® Shingle during manufacturing for strength. In addition, the StrikeZone® nailing area (which is the widest in the industry) is covered with microgranules that allow the GAF Dura Grip™ sealant to create a strong asphalt-to-asphalt bond. Because of their unique construction, only four nails are typically required to secure these shingles, unless otherwise required by local codes. The system is completed by installing the required combination of four qualifying accessories—GAF Starter Strips, Roof Deck Protection, Ridge Cap Shingles, and Leak Barrier or Attic Ventilation.1Is There a Cost for This Protection?When installed with the required combination of four qualifying GAF accessory products, Timberline® Shingles with LayerLock® Technology qualify for coverage under the WindProven™ Limited Wind Warranty1 (this coverage applies to the shingles only and not the whole system). The warranty cannot be purchased.How to Submit a Warranty ClaimShould a homeowner experience an issue with blown-off shingles, GAF makes it easy to submit a claim. The homeowner can start the process online and monitor the claim's status. Once a claim is opened, the owner will be notified about additional information required to process it—such as photos, installation documentation, and shingle samples. If you find yourself in this situation, your customer may call you for assistance or repairs. Keep in mind that the homeowner has nine months to gather the information required for claim processing. If repairs are needed before the claim is fully processed—because of leaks, for example—be sure to provide notice to GAF and preserve evidence of the original damage to support the claim under the warranty.Helping Property Owners Reduce RiskPeople living in hurricane-prone or other windy areas can benefit from the industry's first limited wind warranty with no maximum wind speed limitation.1Explain to your customers that if they install Timberline® Shingles with LayerLock® Technology and the required combination of four qualifying GAF accessory products, their LayerLock®-labeled Timberline® Shingles qualify for the WindProven Limited Wind Warranty.1 Your customers will know that they are protected, no matter how fast the wind blows.Wind isn't just an issue for hurricane-prone areas, of course. It can be a major component of spring and summer storms, which are often accompanied by wind-driven rain. So, no matter where you work, it's important to educate your customers and offer the protection they need.Interested to learn more and help your customers better protect their homes from severe weather? Request a Wind Warranty Selling Kit from GAF today!115-year WindProven™ Limited Wind Warranty covers GAF Shingles with LayerLock® Technology only and requires the use of GAF Starter Strips, Roof Deck Protection, Ridge Cap Shingles, and Leak Barrier or Attic Ventilation. See GAF Roofing System Limited Warranty for complete coverage and restrictions. Visit gaf.com/LRS for qualifying GAF products. For installations not eligible for the WindProven Limited Wind Warranty, see GAF Shingle & Accessory Limited Warranty for complete coverage and restrictions.
By Karen L Edwards
August 29, 2023
Residential Roofing
All about Roofing Nails for Shingles
Even the smallest details play a role in a roof's effectiveness and integrity. Shingles and flashing are among the most noticeable roofing materials, but roof nails often get overlooked—despite being just as important as more obvious elements. And since they can greatly differ in size, material, and length, using the wrong nails to secure certain areas can cause all kinds of problems down the road.Types of Roofing NailsWhen nailing shingles, roofers mostly choose from among these four common types of roofing nail:Typical roofing and ring-shank nails are the most commonly used. Typical roofing nails may have a smooth or circular unconnected rings around the body to help them maintain grip in the deck. Ring shank nails have connected rings around the shaft which give them superior withdrawal resistance during high winds. Either nail will keep shingles securely attached to the roof when installed according to the manufacturer's instructions. That said, ring shank nails have superior withdrawal resistance—which is why they're typically used in high-wind areas and are often required by local codes. Both of these nail types also offer strength and the ability to penetrate the deck below with ease.Square and round cap nails are more commonly used for roof underlayment than shingles. The larger caps provide holding power that keeps the underlayment material in place using fewer nails.Types of Roofing Nail MaterialsWhat the nail is made of is often just as important as the type of nail:Galvanized steel: While less corrosion-resistant than stainless steel, these nails are popular as they still have strong corrosion- and rust-resistance (courtesy of their zinc coating) but cost much less than stainless steel. There are two main types: hot-dipped galvanized and electro-galvanized. Hot-dipped is more robust, since the nail is immersed in a melted zinc solution, which creates a strong coating. Electro-galvanized combines electricity with a less powerful chemical solution to create a thinner zinc coating.Copper roofing nails are resistant to corrosion and can last much longer than steel. However, they're typically a more expensive option. Copper is more often used when installing long-lasting roofing materials like tile and clay. If you use copper flashing for the roof, it's best practice to use the same material for the nails. However, steel nails are acceptable, though mixing galvanized nails with copper can cause a galvanic reaction that leads to some corrosion in both.Stainless steel nails are typically only used in environments very likely to cause corrosion, most commonly in coastal regions.Aluminum nails are not as commonly used, especially in coastal areas since salt spray can damage the nail and may cause it to deteriorate prematurely.Nails for Roof Underlayment, Flashing, and SheathingDifferent roof components call for different nails. For underlayment, use square cap nails for felt and round head for synthetics (both nail types come with either metal or plastic caps). When installing flashing, you can simply opt for the same nails for the shingles, as they don't require any special properties. For flashing and sheathing, standard roof nails will do the trick.Hand-Driven Nailing vs. Pneumatic NailerYou will need to decide whether to hand-drive the nails with a hammer or use a pneumatic nailer.Using the pneumatic nailer is a much faster solution than hammering manually. Many shingles come with warranties that require you to install at least four nails per shingle, with some of them needing up to six. As well as time considerations, using a pneumatic nailer is obviously significantly less physically demanding than manual hammering.That said, an upside of using a hammer is that you have better overall control over nail placement. You can ensure a nail is tightly fitted and properly penetrates the decking, which can help in the long term as issues may arise if a nail is over- or under-driven. When nails are over-driven—meaning they go well past the material below it—it can cause openings in the shingles which can lower wind resistance (among other issues). When under-driven, nails don't fully penetrate the decking, which can lead to loose or falling shingles and leaks over time.Size and Length of Roofing NailsTypically, a roofing nail measures anywhere from 1 to 2 inches. A roofing nail should be long enough to penetrate the shingle and then as the plywood or OSB decking beneath by at least 3/4 of an inch. The sheathing thickness can vary, so you may need longer nails depending on the decking used.Keep in mind that some parts of the roof—like hip and ridge cap shingles, and ventilation accessories such as a ridge vent—require longer nails. Some premium or designer shingles may also require longer nails than standard 3-tab shingles, as they tend to be thicker (usually often consisting of two shingle strips fused together).Another thing to note is that 3/4-inch or 7/8-inch nails may be used at open soffit areas so as to not completely penetrate the decking. Completely penetrating the decking can cause the material underneath—most often finished wood—to splinter as well as the nail to be visible from the ground.Most manufacturers recommend using zinc-coated steel or aluminum, 10-12 gauge, barbed, deformed, or smooth shank roofing nails with heads 3/8" (10mm) to 7/16" (12mm) in diameter. Fasteners should be long enough to penetrate at least 3/4" (19mm) into wood decks or just through the plywood decks. Fasteners must be driven flush with the surface of the shingle. Over-driving will damage the shingle. Raised fasteners will interfere with the sealing of the shingles and can back out.Apply Your Nail Knowledge in Practice!While useful, having a good working knowledge of what materials to use for a job is only half the equation. If you'd like hands-on training to see how to apply your knowledge in practice—and given by some of the leading experts in roofing—check out the GAF CARE Contractor Training Center.
By Mark Soto
March 28, 2023
Residential Roofing
The Benefits of Self-Adhered Roofing Systems for Low-Slope Roofs
About 82% of homes in the United States have outdoor living areas—many with low-slope roofs. That's nearly 6 million homes that could feature a self-adhered roofing system. Are you taking advantage of the opportunities that these porches, sheds, garages, and carports represent?The LIBERTY™ SBS Self-Adhering Roofing System is a residential low-slope roofing solution that can help boost your bottom line and help keep customers happy.System ComponentsThe LIBERTY™ SBS Self-Adhering Roofing System features the LIBERTY™ SBS Self-Adhering Base/Ply Sheet and the Liberty™ SBS Self-Adhering Cap Sheet.Benefits for CustomersContractors can help educate customers about the benefits of hiring a GAF-Certified Contractor to install the LIBERTY™ SBS Self-Adhering Roofing System on their low-slope roof.When talking to a customer, explain how asphalt shingles aren't intended for low-slope roofs. In fact, installing shingles could lead to excess debris, pooling water, and an increased risk of leaks and water damage. When it comes to a mopped roof, explain the increased risks of the hot asphalt, and the unpleasant smell. Plus, you can point out that a LIBERTY™ SBS Self-Adhering Roofing System is typically quicker to install.Clarify for customers which types of low-slope roofs could benefit from having a self-adhered roofing system — such as garages, sheds, patios, porches, carports, etc.Customers will likely care about aesthetic benefits, too. The granule-surfaced modified-bitumen roofing system has an attractive, low-profile look and comes in seven popular colors that can help complement GAF Timberline® Shingles (among many others!) installed on their home.Finally, you can explain that the Liberty™ SBS Self-Adhering Roofing System offers both 10 and 15-year warranties depending on the system that is installed. Click here for warranty details.Benefits for RoofersRoofers already have the know-how to install the LIBERTY™ SBS Self-Adhering Roofing System, but adding it to your roofing arsenal also comes with real perks, such as:Saving on setup and cleanup time compared with a typical mopped SBS roof system.Expanding your economic opportunities by offering an efficient, quality solution for low-slope roofs.Convenient installation with no torches, open flames, hot asphalt, bulky equipment, or messy solvent-based adhesives.Rising above the competition by offering an aesthetically pleasing low-slope solution.Installation Best PracticesThis self-adhered roofing system is a straightforward install—no difficult new techniques, just the roofing basics you've already mastered. Here are some best practices for installing the LIBERTY™ Self-Adhering Roofing System. Remember to always refer to full instructions for proper installation.Remove Old Roof: Remove the existing roof(s) and inspect the roof deck to determine suitability for the LIBERTY™ Self-Adhering Roofing System. As always, confirm the decking is in sound shape before beginning this or any other roofing project, making sure any damaged deck materials are replaced as necessary.Prep the Deck: Seal up any seams with roof deck tape (to provide added structural strength and waterproofing protection for your project) and prime the deck using the Matrix 307™ Asphalt Primer, LIBERTY™ Asphalt Primer, or equivalent ASTM-D41 Asphalt primer prior to installing the LIBERTY™ SBS Self-Adhering Base/Ply Sheet.Cut the Base Sheet: Watch the online instructional video to learn the correct base sheet drip edge allowance, how to account for inside corner transitions, and how many inches to add for cant strips when installing the LIBERTY™ Self-Adhering Roofing System. (A password is required. If you're not already using the GAF Learning Portal, you can register to watch this video and other roofing-focused vocational training videos and courses here). Plus, learn how to stagger your base sheet seams to help prevent water and debris from gathering and to improve overall aesthetic outcomes. Pro-tip: lay out the material before starting the installation, so you can verify measurements and help with a smoother application. Note: For two-ply installations, LIBERTY™ SBS Self-Adhering Base/Ply Sheets are required.Install the Base Sheet: The beauty of self-adhered durable membrane is that no nails are required (unless the slope is 1:12 or higher, then back-nailing in the selvage edge is required to prevent slippage). To create a strong bond and smooth surface when installing, roll with a weighted roller (~150 lb.) between each layer.Attach the Metal Drip Edge: Before setting the metal drip edge, determine if you are installing a one or two-ply system. This will determine the location of the metal drip edge. Learn about correct nail type and penetration depth for metal drip edge installation in the video. Along with the knowledge gained from the instructional video, be sure to always follow local code on nail spacing.Cut the Cap Sheet: Cut the LIBERTY™ SBS Self-Adhering Cap Sheet to a manageable length, and align at the lowest edge of the roof, overlapping and flush with the outer edge of the drip edge, with the selvage edge at the high side of the roof.Install the Cap Sheet: Thankfully, installing the cap sheet is as easy as aligning, folding, peeling, and rolling. The LIBERTY™ SBS Self-Adhering Roofing System was made to simplify a roofer's life when it comes to residential low-slope roof applications. Watch the cap sheet install demonstration and get pro-tips about cap sheet priming, overlap allowance, end laps and T-joints, and more in the above video.Grow and Connect with Fellow Roofing ProfessionalsReady to build your business with expanded roofing products and know-how? Grow professionally with the GAF Learning Portal. Improve your hands-on skills, business expertise, and product knowledge—all while connecting with fellow roofing pros.
By Annie Crawford
February 24, 2023

Commercial Roofing
Questions to Ask a Roofer for Your Commercial Roof Project
If your commercial building needs a new roof or repair, it might be time to call in a professional roofer. You might have a few contractors in your area, so knowing what questions to ask a roofer can help you find the right one for the job. In addition to requesting examples of their past work, here are eight questions to ask a roofing contractor before hiring them.1. Are You Licensed and Insured?Not all states require licensing but many do, and you'll want to see proof that the contractor is licensed in the state they'll be performing work for you.In many cases, roofing contractors who advertise their services are required to include their license number in the advertisement. Most states that require licensing have online portals where you can verify that the contractor's license is in good standing.Insurance is also important, as sometimes not all jobs go smoothly. The contractor should be covered in case an unfortunate incident occurs.2. Does Your Company Hold Manufacturer Certifications?Roofing manufacturers may offer several certification levels, helping you know what level of service and experience to expect. For instance, GAF Master Select contractors are required to complete ongoing training and be properly licensed and insured. Additionally, they must have at least $1 million in general liability insurance coverage and a satisfactory Better Business Bureau rating, among other requirements.Not every contractor can achieve certification. In fact, only 1% of roofing contractors in the US achieve the GAF Master Select status. This status means the contractor has been vetted by the manufacturer, meets strict requirements for quality control and can potentially offer enhanced warranties on roofing systems.3. Are Your Workers Certified?Many training programs and certifications are available for roofing installers, such as the National Roofing Contractors Association ProCertification® training program and the GAF CARE Contractor Training Center.You want to be sure the people working on your roof understand the proper repair and installation methods for your roofing system. Seeing what certifications they hold can confirm their roofing knowledge and familiarity with the products you're looking to install.4. Is Your Company a Member of Any Industry Associations?Membership in an industry association can demonstrate a roofing contractor's professionalism and commitment to their industry. In addition to regional, state, or national roofing associations, some commercial roofing contractors belong to associations designed for building owners and facility managers, such as the Building Owners and Managers Association or the International Facility Managers Association.If you're a member of either of these organizations, your membership list could be a good place to start your search for a commercial roofer.5. What Is Your Project Timeline and Process?The contractor should consider all aspects of your project when planning it. Ensure they'll install quality roofing systems and solutions, and share any concerns you may have—before work begins. For instance, you may be concerned about how construction may affect building occupants, including noise levels and parking. Your contractor should be able to review a plan with you that addresses these concerns.They should also give you a project timeline from start to completion and be able to explain their process, which can include:Initial site inspectionRepair or replacement recommendationsEstimate developmentProject timelinePlans to minimize disruptionsHow they'll handle and communicate unexpected issuesWarranty options6. How Do I Prepare for the Roofing Project?Determine if you need to take any steps to prepare for the project. For example, your contractor should suggest how to inform building occupants about the upcoming work and how long it will last. Also, if you have neighbors close by or share parking lots, they'll need to be notified too.Every project and building is different, so other preparations may need to happen before the project begins. Your contractor can identify any additional needs as part of their inspection and planning process. In most cases, the contractor will handle precautions—like roping off parking areas or protecting landscaping—and they should communicate that to you before your project begins.7. How Much Will the Project Cost? Are There Contingencies?Most commercial roofing contractors include the project cost in their bid package, but you should also ask about contingencies. A contingency is typically a small percentage of the total project cost that may be included to cover surprises during a roofing project, such as mold or rot. Making unexpected repairs will increase the project's cost. So, understand whether a contingency is included in your estimate so you can financially prepare.8. Do You Have a Maintenance Program for Repair Work?Once your roof has been installed, it's important to take care of it. Ask the contractor if they offer a maintenance program that includes an annual inspection of your roof. This is a great way to assess the health of your roof after a year's worth of weather. Any issues can be addressed before they turn into larger problems.By having a maintenance program in place, you can build a lasting relationship with your commercial roofing contractor and may even be able to extend your roof's warranty. If your contractor participates as a GAF Certified Maintenance Professional® you could be eligible for a 25% warranty extension with the completion of required inspections and proper documentation.Signing with a Commercial Roofing ContractorKnowing what to look for when hiring a roofer is the first step toward a successful project. Now that you know some of the questions to ask a roofer, interviewing them should be more straightforward. Their answers can help you decide if they're the right fit for your project. Keep in mind that it's wise to meet with and interview multiple commercial roofing contractors before signing a contract.Ready to take the next step? Find roofing contractors certified by GAF* in your area and schedule a time to talk about the commercial work you need completed.*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the GAF Contractor Terms of Use.
By Karen L Edwards
November 08, 2023
Commercial Roofing
The Importance of Maintaining Buildings' Roof Drains
A low-slope commercial roofing system is responsible for keeping the elements out of the building. During times of heavy rain, water with nowhere else to go may pond on the roof. A roof drain prevents water from ponding by providing a way for it to leave the roof. Although commercial buildings may appear to have flat roofs, some roofs have slopes built into the structure and some are flat and need added slope, typically achieved with tapered insulation to facilitate the drainage of water. This slope is designed to guide the water to a drain so that it doesn't sit on the roof and cause damage to the roofing system or structure. Standing water can slowly deteriorate certain roofing materials and cause premature degradation, failure, or damage. It can also promote the growth of algae and plants, and attract nuisances such as birds and insects. Guiding Water off the Roof Residential roofs have gravity on their side—they remove water using gutters that collect the liquid and transport it down and away from the home. Commercial buildings with low-slope roofs have to work a little harder to remove water, and this is where roof drains come into play. The design of the roofing system can help guide the water toward the drains. This often happens through the use of tapered insulation such as GAF EnergyGuard™ tapered polyiso insulation. The two most popular tapered boards deliver a 1/8-inch or 1/4-inch per foot slope. This slight slope prevents water from standing on the roof and forces it toward a roof drain that has been strategically installed at various low points on the roof with use of crickets and saddles. Drain placement needs to be considered for when water is being shed by the parapet wall. To help the water arrive at the drainline or gutter, tapered crickets are typically installed in corners and between drains to direct the flow efficiently and alleviate ponding. This water will need to flow down the roof side of the parapet wall and follow the roof slope to reach the drain. 3 Common Types of Roof Drain Options Inner drains: These drains are connected to sloped pipes under the roof that carry the water off of the roof and away from the building. They typically rely on gravity and the slope of the roof to get the water to the drain. Scuppers: This drainage point is found at the edge of the roof, usually installed through a hole in the parapet wall. It is designed to drain water from the roof and into a downspout, or it may extend out from the building to shed the water. Siphonic drains: These drains feature a baffle that keeps air out and allows water to fill the pipes. Once the pipes are full, the lack of air creates a vacuum that siphons water from the roof at a high velocity. The baffle also serves to keep leaves and debris from gathering in the drain and causing a blockage. Caring for and Maintaining Roof Drains Inspecting and maintaining roof drains should be included with your regular roof inspections. Because roof drains are located at low points on the roof, it's easy for debris or leaves to build up at the drain. Debris needs to be cleared away in order for the drains to properly function. These clogs encourage pools of water to form on the rooftop, and the damage could cause structural issues for the building. Even just an inch of standing water can add thousands of pounds of weight to the roof. Proper Installation Is Key When properly installed, roof drains can keep the rooftop free of standing water for many years. To help contractors be successful while installing, the experts at GAF have developed the GAF CARE Contractor Training Center online. Courses are designed to allow you to learn at your own pace. So, whether you are new to installing roof drains or are looking for a refresher course, the CARE training is the perfect place to start.
By Karen L Edwards
December 22, 2022
Commercial Roofing
How to Address a Leaking Roof with Your Tenants
Part of being a landlord is ensuring your tenant's home has adequate living conditions. Depending on its severity, a leaking roof could be a true emergency.Navigating this situation can be tricky for landlords. You want to fix the problem as soon as possible—but without disrupting your tenant's living situation. Here is a helpful process to follow to ensure everything runs smoothly when dealing with a roof leak, whether in a residential home or a commercial building.The First ContactChances are your tenant will reach out to let you know about the roof leak. First, you'll need to investigate where the leak is coming from, as the issue may not be coming from the roof. Once you determine the source of the leak, you can figure out how severe the issue is. If you see water stains on the interior walls, stains on the ceiling if you are on a top floor, or curled shingles on the outside, the problem is worth fixing, but it doesn't necessarily constitute an emergency. If water is spilling to the floor or there is a large number of missing or damaged shingles on the roof, you may have an emergency on your hands.It's best to go to the property and analyze the problem yourself. One common tenant complaint is that many landlords take too long to make repairs, so explain your next steps to reassure the tenant that you're addressing the issue.How to Handle Roofing FixesAfter determining the current state of the roof leak, find out the best way to get it fixed. Contact your insurance company to file a claim, notify the roof manufacturer if there is a warranty, and start your search for a licensed contractor. Although some insurance companies have their own preferred contractors, you can also make your own choice. After a contractor reviews the roof damage, ask them for an estimate of the amount of work and time required to repair the leaking roof.Depending on the work needed, there is a chance your tenant may not be able to stay in the home while repairs take place. This is where a good landlord's insurance policy kicks in and why you want to ensure you have one. The liability costs are much higher with commercial tenants, so be careful to choose the right commercial roofer to fix the leaking roof quickly and correctly.Look over your landlord's insurance policy to determine what options you can offer tenants and what your responsibilities are. You may need to provide them with temporary housing, which can include a hotel room or other accommodation, while you get the roof repaired. If their business needs to close down, you might be liable for temporary pay depending on your contract.How to Talk to Your TenantOnce you've settled on your contractor and what options are available, communicate clearly with your tenant about the situation. Repairing or completely replacing the roof isn't a short or noiseless project, so it's crucial that tenants have an exact idea of how long it will take and whether they can stay on the premises as it takes place.Be honest about the state of the roof and the possible timeline for repairs. Residential tenants may need to make arrangements for other accommodation if they can't stay, and businesses may need to let their customers know about any disruptions. Have an idea of what you can offer tenants if there are disruptions to their living accommodations or business closures due to the roof leak and repair time. The better prepared you are when discussing with them, the more reassured and accommodated they'll feel about the situation.You want to ensure the roof leak is fixed for good to prevent future issues, and the best way to do that is to hire a quality licensed contractor that knows what they're doing. Click here to find a contractor certified by GAF* in your area.*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the Contractor Terms of Use.
By Mark Soto
July 06, 2022
Commercial Roofing
Lake Sheen Estate Showcase Home Features GAF TPO Roofing
Every year manufacturers are invited to showcase their products at the International Builders' Show, a great stop for anyone in the building industry. In 2022, while attending the show in Orlando, FL, visitors were able to take the opportunity to go offsite and visit the Lake Sheen Showcase Home, featuring top-performing products in the industry.Building Tomorrow's HomeLocated in the Doctor Phillips area of Central Florida, the showcase home lies just minutes from the Disney theme parks and is situated along the banks of the Butler chain of lakes. The Lake Sheen Showcase Home incorporates design and construction elements reminiscent of Florida's picturesque waterways. A pool on the second floor cascades over a first-floor living room in a beautiful 13-foot-tall waterfall. Expansive 12-foot-wide windows look out over the nearby lake and out onto a giant mango trees.The interior of the home, designed by Rob Turner of CRT Studio, carries these ideas forward in a clean, focused execution of coastal and contemporary styles. High ceilings and large windows with clear sight lines throughout the house emphasize that the contemporary house is at home in its natural setting.Hardwick General Contracting built the three-story, 7,461-square-foot home to Florida Green Building Coalition (FGBC) standards. FGBC's mission is "to lead and promote sustainability with environmental, economic, and social benefits through regional education and certification programs." Two of the FGBC requirements are directly related to the roofing system, including the energy efficiency of the home and the ability to mitigate damage from natural disasters.Using a Flat RoofFlorida is just one area of the country now seeing more new homes with flat roofs, according to Greg Hardwick, owner of Hardwick General Contracting. "We first saw them gaining popularity in the mid-2000s, and we needed to find a product that was different from the standard tile or shingles that we were used to seeing here," explains Hardwick. "So, we had to come up with something that wasn't widely used for residential construction for these modern homes, and the answer to that question is TPO."Hardwick notes that the GAF EverGuard® 60-mil TPO was a good fit for the home's roof because of its durability and reflectivity. "When you look at other roofing products that are out there, where you're trying to get a high solar reflective value, TPO is a great option," says Hardwick.Hardwick goes on to say that GAF TPO has years of proven performance in the commercial sector, so it made sense to bring it over into the residential side of the industry. "We've now been using TPO since about 2008 on residential flat roofs to provide protection from weather elements, but you also benefit because the product can help meet reflectivity requirements of green certified construction."Installing the RoofThe GAF EverGuard® 60-mil TPO roofing system was installed over a roof deck made up of spray foam insulation that was topped with an engineered wood panel that included a factory weather resistive barrier (WRB) and integrated seam tape system to provide additional protection. The roofing crew installed a layer of six-ounce Polymat over the OSB sheathing before mechanically fastening the 60-mil TPO membrane to the roof.Prefabricated accessories, including inside/outside corners and pipe boots, made for a smooth and fast installation, says Hardwick. "That roof went on extremely fast, and I think a lot of those prefab materials really helped with that," he says. "They helped not only in speed but in the appearance as well. The house has huge, fixed windows that look out to the lake—but, as you're getting to the lake, you can see a significant portion of the roof. So, with these prefabricated pieces, it's very clean and professional looking."Want to know more about the GAF TPO roofing system? Contact your local GAF rep to learn more about the roof chosen to protect tomorrow's homes.Rendering by Green Apple Architecture
By Karen L Edwards
May 31, 2022

Building Science
Thermal Bridging Through Roof Fasteners: Why the Industry Should Take Note
What is going on here?No, this roof does not have measles, it has a problem with thermal bridging through the roof fasteners holding its components in place, and this problem is not one to be ignored.As building construction evolves, you'd think these tiny breaches through the insulating layers of the assembly, known as point thermal bridges, would matter less and less. But, as it happens, the reverse is true! The tighter and better-insulated a building, the bigger the difference all of the weak points, in its thermal enclosure, make. A range of codes and standards are beginning to address this problem, though it's important to note that there is often a time lag between development of codes and their widespread adoption.What Is the Industry Doing About It?Long in the business of supporting high-performance building enclosures, Phius (Passive House Institute US) provides a Fastener Correction Calculator along with a way to calculate the effect of linear thermal bridges (think shelf angles, lintels, and so on). By contrast, the 2021 International Energy Conservation Code also addresses thermal bridging, but only considers framing materials to be thermal bridges, and actually pointedly ignores the effects of point loads like fasteners in its definition of continuous insulation: "insulation material that is continuous across all structural members without thermal bridges other than fasteners and service openings" (Section C202). Likewise, The National Energy Code of Canada for Buildings: 2020 addresses thermal bridging of a number of building components, but also explicitly excludes fasteners: "in calculating the overall thermal transmittance of assemblies…fasteners need not be taken into account" (Section 3.1.1.7.3). Admittedly, point thermal bridges are often excluded because it is challenging to assess them with simple simulation tools.Despite this, researchers have had a hunch for decades that thermal bridging through the multitude of fasteners often used in roofs is in fact significant enough to warrant study. Investigators at the National Bureau of Standards, Oak Ridge National Laboratory, the National Research Council Canada, and consulting firms Morrison Hershfield and Simpson Gumpertz & Heger (SGH), have conducted laboratory and computer simulation studies to analyze the effects of point thermal bridges.Why Pay Attention Now?The problem has been made worse in recent years because changes in wind speeds, design wind pressures, and roof zones as dictated by ASCE 7-16 and 7-22 (see blogs by Jim Kirby and Kristin Westover for more insight), mean that fastener patterns are becoming denser in many cases. This means that there is more metal on average, per square foot of roof, than ever before. More metal means that more heat escapes the building in winter and enters the building in summer. By making our buildings more robust against wind uplift to meet updated standards, we are in effect making them less robust against the negative effects of hot and cold weather conditions.So, how bad is this problem, and what's a roof designer to do about it? A team of researchers at SGH, Virginia Tech, and GAF set out to determine the answer, first by simplifying the problem. Our plan was to develop computer simulations to accurately anticipate the thermal bridging effects of fasteners based on their characteristics and the characteristics of the roof assemblies in which they are used. In other words, we broke the problem down into parts, so we could know how each part affects the problem as a whole. We also wanted to carefully check the assumptions underlying our computer simulation and ensure that our results matched up with what we were finding in the lab. The full paper describing our work was delivered at the 2023 IIBEC Convention and Trade Show, but here are the high points, starting with how we set up the study.First, we began with a simple 4" polyisocyanurate board (ISO), and called it Case A-I.Next, we added a high-density polyisocyanurate cover board (HD ISO), and called that Case A-II.Third, we added galvanized steel deck to the 4" polyiso, and called that Case A-III.Finally, we created the whole sandwich: HD ISO and ISO over steel deck, which was Case A-IV.Note that we did not include a roof membrane, substrate board, air barrier, or vapor retarder in these assemblies, partly to keep it simple, and partly because these components don't typically add much insulation value to a roof assembly.The cases can be considered base cases, as they do not yet contain a fastener. We needed to simulate and physically test these, so we could understand the effect that fasteners have when added to them.We also ran a set of samples, B-I through B-IV, that corresponded with cases A-I through A-IV above, but had one #12 fastener, 6" long, in the center of the 2' x 2' assembly, with a 3" diameter insulation plate. These are depicted below. The fastener penetrated the ISO and steel deck, but not the HD ISO.One visualization of the computer simulation is shown here, for Case B-IV. The stripes of color, or isotherms, show the vulnerability of the assembly at the location of the fastener.What did we find? The results might surprise you.First, it's no surprise that the fastener reduced the R-value of the 2' x 2' sample of ISO alone by 4.2% in the physical sample, and 3.4% in the computer simulation (Case B-I compared to Case A-I).When the HD ISO was added (Cases II), R-value fell by 2.2% and 2.7% for the physical experiment and computer simulation, respectively, when the fastener was added. In other words, adding the fastener still caused a drop in R-value, but that drop was considerably less than when no cover board was used. This proved what we suspected, that the HD ISO had an important protective effect against the thermal bridging caused by the fastener.Next, we found that the steel deck made a big difference as well. In the physical experiment, the air contained in the flutes of the steel deck added to the R-value of the assembly, while the computer simulation did not account for this effect. That's an item that needs to be addressed in the next phase of research. Despite this anomaly, both approaches showed the same thing: steel deck acts like a radiator, exacerbating the effect of the fastener. In the assemblies with just ISO and steel deck (Cases III), adding a fastener resulted in an R-value drop of 11.0% for the physical experiment and 4.6% for the computer simulation compared to the assembly with no fastener.Finally, the assemblies with all the components (HD ISO, ISO and steel deck, a.k.a. Cases IV) showed again that the HD ISO insulated the fastener and reduced its negative impact on the R-value of the overall assembly. The physical experiment had a 6.1% drop (down from 11% with no cover board!) and the computer simulation a 4.2% drop (down from 4.6% with no cover board) in R-value when the fastener was added.What Does This Study Tell Us?The morals of the study just described are these:Roof fasteners have a measurable impact on the R-value of roof insulation.High-density polyisocyanurate cover boards go a long way toward minimizing the thermal impacts of roof fasteners.Steel deck, due to its high conductivity, acts as a radiator, amplifying the thermal bridging effect of fasteners.What Should We Do About It?As for figuring out what to do about it, this study and others first need to be extended to the real world, and that means making assumptions about parameters like the siting of the building, the roof fastener densities required, and the roof assembly type.Several groups have made this leap from looking at point thermal bridges to what they mean for a roof's overall performance. The following example was explored in a paper by Taylor, Willits, Hartwig and Kirby, presented at the RCI, Inc. Building Envelope Technology Symposium in 2018. In that paper, the authors extended computer simulation results from a 2015 paper by Olson, Saldanha, and Hsu to a set of actual roofing scenarios. They found that the installation method has a big impact on the in-service R-value of the roof.They assumed a 15,000-square-foot roof, fastener patterns and densities based on a wind uplift requirement of 120 pounds per square foot, and a design R-value of R-30. In this example, a traditional mechanically attached roof had an in-service R-value of only R-25, which is a 17% loss compared to the design R-value.An induction-welded roof was a slight improvement over the mechanically attached assembly, with an in-service value of only R-26.5 (a 12% loss compared to the design R-value).Adhering instead of fastening the top layer of polyiso resulted in an in-service R-value of R-28.7 (a 4% loss compared to the design R-value).Finally, in their study, an HD polyiso board was used as a mechanically fastened substrate board on top of the steel deck, allowing both layers of continuous polyiso insulation and the roof membrane to be adhered. Doing so resulted in an in-service R-value of R-29.5, representing only a 1.5% loss compared to the design R-value.To operationalize these findings in your own roofing design projects, consider the following approaches:Consider eliminating roof fasteners altogether, or burying them beneath one or more layers of insulation. Multiple studies have shown that placing fastener heads and plates beneath a cover board, or, better yet, beneath one or two layers of staggered insulation, such as GAF's EnergyGuard™ Polyiso Insulation, can dampen the thermal bridging effects of fasteners. Adhering all or some of the layers of a roof assembly minimizes unwanted thermal outcomes.Consider using an insulating cover board, such as GAF's EnergyGuard™ HD or EnergyGuard™ HD Plus Polyiso cover board. Installing an adhered cover board in general is good roofing practice for a host of reasons: they provide enhanced longevity and system performance by protecting roof membranes and insulation from hail damage; they allow for enhanced wind uplift and improved aesthetics; and they offer additional R-value and mitigate thermal bridging as shown in our recent study.Consider using an induction-welded system that minimizes the number of total roof fasteners by dictating an even spacing of insulation fasteners. The special plates of these fasteners are then welded to the underside of the roof membrane using an induction heat tool. This process eliminates the need for additional membrane fasteners.Consider beefing up the R-value of the roof insulation. If fasteners diminish the actual thermal performance of roof insulation, building owners are not getting the benefit of the design R-value. Extra insulation beyond the code minimum can be specified to make up the difference.Where Do We Go From Here?Some work remains to be done before we have a computer simulation that more closely aligns with physical experiments on identical assemblies. But, the two methods in our recent study aligned within a range of 0.8 to 6.7%, which indicates that we are making progress. With ever-better modeling methods, designers should soon be able to predict the impact of fasteners rather than ignoring it and hoping for the best.Once we, as a roofing industry, have these detailed computer simulation tools in place, we can include the findings from these tools in codes and standards. These can be used by those who don't have the time or resources to model roof assemblies using a lab or sophisticated modeling software. With easy-to-use resources quantifying thermal bridging through roof fasteners, roof designers will no longer be putting building owners at risk of wasting energy, or, even worse, of experiencing condensation problems due to under-insulated roof assemblies. Designers will have a much better picture of exactly what the building owner is getting when they specify a roof that includes fasteners, and which of the measures detailed above they might take into consideration to avoid any negative consequences.This research discussed in this blog was conducted with a grant from the RCI-IIBEC Foundation and was presented at IIBEC's 2023 Annual Trade Show and Convention in Houston on March 6. Contact IIBEC at https://iibec.org/ or GAF at BuildingScience@GAF.com for more information.
By Elizabeth Grant
November 17, 2023
Building Science
Defending Against Very Severe Hail
Think that your roof doesn't need protection against hail? Think again.Severe hail events are increasing in geographic footprint and are no longer just in hail alley. The geographic region that experiences 1 inch or larger hailstones has expanded to be nearly two-thirds of the United States. Nearly 10 percent more U.S. properties, more than 6.8 million, were affected by hail in 2021 than in 2020. Coinciding with the increase in properties affected by a damaging hail event in 2021, there was also an increase in insurance claims, which rose to $16.5 billion from $14.2 billion in 2020.Figure 1: The estimated number of properties affected by one or more damaging hail events. Source: NOAA, graphed by VeriskAccording to data from Factory Mutual Insurance Company (FM Global), a leader in establishing best practices to protect buildings, the review of client losses between 2016-20, showed that the average wind/hail losses averaged $931,000 per event. That's a significant impact on a business, and it doesn't account for the other effects that a disruptive loss could have such as headaches from the process of repairing or replacing damaged roofs. As a result, designing the roof to withstand damage from hail events has become not only a best practice, but a necessity.Why does hail size matter?FM Approvals is a third-party testing and certification laboratory with a focus on testing products for property loss prevention using rigorous standards. FM Global, through the loss prevention data sheets, requires the use of FM Approved roof systems. FM Global estimates their clients lose about $130M each year on average from hail events in the United States. Given the increasing volume of severe hail events and the resulting property loss, damage, and financial impacts, FM Global added to the requirements in the FM Loss Prevention Data Sheet (LPDS) 1-34 Hail Damage in 2018. Loss Prevention Data Sheets provide FM's best advice for new construction and for Data Sheet 1-34, this includes new or reroofing projects on existing buildings. Data Sheet 1-34 provides guidelines to minimize the potential for hail damage to buildings and roof-mounted equipment. FM Global intends that the data sheets apply to its insured buildings; however, some designers use data sheets as design guidelines for buildings other than those insured by FM Global.FM's LPDS 1-34 identifies the hail hazard areas across the United States: Moderate Hail hazard area, Severe Hail hazard area, and Very Severe Hail (VSH) hazard area which are defined by hail size. Note that the VSH area roughly correlates to Hail Alley. Hail Alley receives more hailstorms, and more severe ones, compared to other parts of the country.Figure 2: FM's LPDS 1-34 map outlining the different hail categories: moderate, severe, and very severe. The Very Severe area is most commonly referred to as "Hail alley".The hail hazard areas are divided by hail size, with the Very Severe hail hazard area being the largest hail size of greater than 2 inches. As a result, roofing assemblies have to meet the most stringent hail testing for designation in the Very Severe hazard area.Figure 3: Description of FM Approval hail regions.Even if you are not in hail alley, or one of the states in FM's Very Severe Hail area, hail larger than 2 inches still has the potential to occur throughout the contiguous United States. The National Oceanic and Atmospheric Administration (NOAA) tracks weather events throughout the United States, including hail. NOAA's hail database includes information such as location, date, and magnitude (size) of the hail stone for each event. A sampling of typical data is provided below; note that several states that are outside of FM's VSH zone, had hail events that would qualify as VSH, where hail stones were recorded to be larger than 2-inches in size.Figure 4: Hail events in states that are outside of the VSH area, but qualify as VSH by size.How Do I Design For Very Severe Hail?In order for a roof assembly to achieve a hail rating, the assembly must pass a hail test. FM Approvals designs the hail tests including a different test for each hail hazard area. Hail testing generally includes the use of steel or ice balls that are dropped or launched at roof assemblies in a laboratory setting. Pass criteria vary by the test, but generally visual damage cannot be present to either the membrane or components below. Roof assemblies that pass each individual hail test are FM approved to be installed in each hail hazard area.There are thousands of FM rated assemblies and it can be difficult to choose just one. To start, it is important to note that selection consists of an entire assembly, however consideration of all roof components including the membrane, coverboard, and attachment method each play an important role in how the assembly defends against hail.Membrane selection is critical for Very Severe Hail prone regions. Thicker roof membranes, as well as higher performance grades that will remain pliable under heat and UV exposure over time and will outperform standard grade materials. Fleeceback membranes also provide an added cushion layer that buffers hail impact.Coverboard selection is a critical component of the roof system design. High compressive strength coverboards are an effective means to enhance the performance of the roof system when exposed to hail events. A coverboard will enhance the roof's long term performance by fortifying the membrane when hail strikes as well as providing a firm surface to help resist damage from typical foot traffic. It will also help the roof insulation below withstand damage from hail. While conventional gypsum coverboards and high-density polyiso coverboards provide excellent protection against foot traffic and smaller hail, they are not effective for VSH. Coverboards for VSH systems were originally limited to plywood or oriented strand board (OSB). The use of plywood and OSB is very labor intensive to install as compared to traditional gypsum coverboards, increasing the cost of the installation. Recently, coverboard manufacturers have developed glass mat roof boards which are a reinforced gypsum core with a heavy-duty coated glass mat facer. Not only do these boards provide protection against 2-inch hail and are an important part of VSH assemblies, they are also a FM Class 1 and UL Class A thermal barrier for fire rated assemblies. These boards are 5/8" thick and are 92-96 pounds per 4'x8' board; about 30 percent heavier compared to plywood yet easier to install as they can be scored and cut like a traditional gypsum board.Consideration of roof attachment method is critical for selection of VSH assemblies. Historically, mechanically attached systems were not able to pass the VSH tests; when an ice ball hit the head of the fastener or plate, the result was a laceration in the membrane. To avoid failures of the membrane at the fasteners and plates, the fasteners were traditionally buried in the system; the insulation was mechanically attached and the coverboard and membrane were adhered. This is still a common installation method and as a result, there are a large number of assemblies where the membrane and coverboard are adhered. Additionally, burying the fasteners allows for the installation of a smooth backed membrane. With the development of glass mat coverboards, there are VSH rated assemblies that can be simultaneously fastened (mechanically attached coverboard and insulation) that utilize an adhered fleece-back membrane.Figure 5: VSH systems. Left is simultaneously fastened 60 mil Fleeceback TPO over glass mat VSH roof board and Polyiso Insulation. Right is 60 mil Fleeceback TPO over glass mat VSH roof board adhered in low rise foam ribbons to mechanically attached Polyiso Insulation.Figure 6: A sample of available VSH assemblies.SummaryWhy Should We Design for VSH?Severe hail events are increasing in geographic footprint and storms with hailstones that meet Very Severe Hail criteria are occurring throughout the country. While designing for VSH is a requirement if a building falls within the VSH area and is ensured by FM Global, many owners and designers are opting for roof assemblies that can withstand VSH storms even if they are not insured by FM Global. Material selection, such as coverboard and membrane, are key components to managing this risk. Glass mat coverboards and thicker, higher grade single-ply membranes, such as fleece-back, increase the roof assembly's resistance to damage. Choosing the right roof assembly could be the difference between weathering the storm or significant damage from hail.What are the next steps?Learn about GAF's Hail Storm System Resources, and as always, feel free to reach out to the Building & Roofing Science team with questions.
By Kristin Westover
January 30, 2023
Building Science
How Architects Can Lean on Roof Design Services for Project Success
Architects strive to achieve a roof design that will perform well and meet project-specific requirements. That often means incorporating the building code and warranty/guarantee requirements that building owners must meet — among the most important factors of any construction project — into the design. This isn't made any easier by the sheer number of roofing systems available. Even experienced architects can find it challenging to get familiar with all available components and identify which materials are going to be suitable for a particular building.Enter the GAF Design Services Team. Formed by merging together three different departments — field services, technical support services, and architectural information services — these technical professionals help support architects in delivering high-performing roofing systems that meet project-specific requirements.Support from Start to FinishAs GAF Senior Design Services Specialist Jesse Caruso explains, "The goal of Design Services is to essentially combine all three of those tasks into one large service team that assists architects, engineers, specifiers, consultants, sales reps, and contractors achieve their roof design goals. From the moment someone says they need a new roof, we are there throughout the entire process to provide support, all the way until the end of that roof guarantee."Each region of the country has dedicated Design Services personnel just a phone call away, ready to provide information about GAF commercial roofing systems. They understand the unique needs of different geographic areas of the country."We help walk a contractor or an owner or architect through that entire roofing lifecycle," says Caruso. "From how to install the system to what kind of warranty or guarantee you're going to get and how to maintain that guarantee or warranty."GAF's Port Arthur, TX Design Services Team: Dacia Belt, Nathan Vidrine, Shelby Noland, Brittany Castillo, Stephanie Lawrence, Melissa Vaughan, Traci Hicks, Jessica Crabtree, Traci Smith, Melanie Miller, Shelly Benoit, & Brittany SanchezSome of the topics Caruso's team is asked to assist with most frequently include:Product Testing: The Design Services team can confirm and provide documentation that shows which products and systems meet ASTM or UL standards for fire and hail resistance. They can also verify wind uplift ratings and other special approvals, such as Factory Mutual and Miami-Dade approvals.Installation Guidelines: The team can provide data on how different methods of installation can affect roofs' performance and guarantees. For instance, if a building is in a coastal area and needs a higher wind uplift rating, the team can provide guidance on fastening patterns and other installation strategies that will help meet that wind uplift requirement.Guarantee Terms: One of the most important aspects for building owners to consider is the warranty or guarantee protection provided by the roofing manufacturer. The Design Services team can assist by verifying what types of coverage are available and what contractor certifications are necessary to deliver a certain type of warranty or guarantee.Documentation: The team can provide professional documentation that supports product testing, ratings, and warranty/guarantee information. One submittal package may contain design lines, cut specs, system letters, data sheets, and more. This documentation can provide assurance from the manufacturer that the roof system will meet or exceed project requirements.An Architect's Partner for SuccessNo matter what challenges professionals may encounter while designing a new roofing system, the GAF Design Services Team is there to assist. You can be confident that the finished roofing system will provide the desired performance and protect the building for years to come.Reach out to the team by emailing designservices@gaf.com or visiting the design professionals help page.
By Karen L Edwards
November 22, 2022
Building Science
Overburden
Since its inception a roof's primary purpose has been to shelter its inhabitants from the elements, but now the underutilized potential of roof surfaces is being realized. For roofs with large surface areas, the potential for large overburden installations, such as solar, vegetative roofing, or amenity decks can be exceptional. Even smaller roofs can have overburden that make a significant impact on the sustainability goals of a building including: increased energy efficiency, stormwater retention, energy generation, biohabitat restoration, food production, reduced urban heat island effect, and outdoor space. However, selection of the overburden system is only part of the design. Selection and design of the roof membrane, the waterproofing layer that protects the building, is critical for a long-lasting installation. Failure of the membrane, whether it requires repair or replacement, may necessitate removal of the overburden. The removal of the overburden can result in lost energy generation for solar installations, and loss of rainwater capture for both vegetative and blue or purple roof assemblies. Appropriate selection of the entire assembly, including proper detailing and integration of the roof assembly, as well as installation, are paramount to the overall success and longevity of the overburden system. Overburden Assemblies Roofing overburden is defined as "any manner of material, equipment or installation that is situated on top of, and covering all or a portion of, a roof or waterproofing membrane assembly."* This excludes thermal insulation but includes: planters, vegetative roof assemblies (both trays and built-up), loose gravel, water tanks, void fill (like EPS, XPS, and/or Polyiso rigid foam), tiles, pavers, supporting pedestals, equipment, and solar PV arrays.* While each property is unique, there are many overburden options and roof assembly considerations to meet sustainability goals. Vegetative Roofs: Vegetative roofs are plants that are installed in trays or built in-place on the roof with extensive or intensive plant configurations. Tray systems and extensive roofs are generally in depths of less than six inches and consist of shallow rooted plants, such as sedums. Intensive vegetative roof systems have deeper soil depths and can accommodate larger plant installations. Blue Roofs: Blue roofs are systems that are designed to provide stormwater detention. Rainfall onto the roof is managed using orifices, weirs, or other outlet devices that control the discharge rate of rooftop runoff. Blue-Green Roofs: A blue-green roof is a blue roof with a vegetative roof assembly. Purple Roofs: A purple roof is a "sponge" roof that incorporates a sponge-like layer made of hydrophilic mineral wool, a dense polyester fabric detention layer, and may or may not include an additional honeycomb layer to increase the volume of rainwater that can be retained and detained . Rooftop Solar: Solar PV panels come in both single sided and bifacial (double-sided) modules. A bifacial module can produce power from both sides thereby increasing the energy generation. Modules are supported by racking systems on the rooftop that are either mechanically attached to the roof, mechanically attached to a structural canopy that is attached to the roof, or held in place with ballast. Agrivoltaics: The emerging practice of agrivoltaics, or agriculture combined with photovoltaics, is showing promise as a mutually beneficial symbiotic solution to not only increase the efficiency of solar panels, but also increase plant size and crop yields by shading and limiting soil evaporation Roofs have the potential for many types of overburden installations including vegetative assemblies, plaza decks, and incorporation of multiple types of assemblies. Roof System Considerations Selection of the roof membrane, the waterproofing layer that protects the building, is critical for the success of overburden installations. The membrane performance and roofing assembly configuration, including location of the membrane in the assembly must be considered. Improper selection of membranes can result in leaks, costly repairs, or even replacement. Special considerations like the type of insulation and cover board should be explored. Most importantly, the roof system should have a lifespan that is equal to or greater than the overburden system. Membrane performance is not only dependent on the overburden and associated roofing assembly materials, but also the design and installation. Roof assembly selection and specific design details down to the last termination and penetration detail should be provided to ensure the roof is installed in accordance with the contract documents. Membrane Selection Single-ply membranes can be an excellent choice for overburden installations as they can be used at the deck level and at the top of the assembly. Membranes that will be used at the deck level, such as for vegetative assemblies, should be evaluated for durability and longevity since access to them for repairs will be limited. Solar is typically installed directly on the membrane. For blue roofs and water catchment systems, single-ply membranes are commonly used at the top of the assembly and it is recommended that single-ply membranes meet NSF P151 water standards. Membrane Color For roof assemblies where the membrane is exposed and at the top of the assembly, such as for solar panel installations and blue roof assemblies, the color can have a significant impact on the performance of the system and also on the roof surface temperatures. Reflective roof membranes can lower the ambient roof temperature. Using a lighter colored roof can decrease the urban heat island effect in cities, and also may decrease the amount of heat that is able to radiate into a building's interior. For solar panel installations, light colored or reflective roof membranes can lower the ambient roof temperature which allows the panels to function more efficiently. The temperature of a PV panel can significantly impact how much electricity the panel produces; as panels get hotter, they produce less power. According to an article published by GAF, "It is estimated that the efficiency of a PV panel can be up to 13 percent higher when installed over a highly reflective membrane compared to a dark membrane with low reflectance. Also, the use of bifacial PV panels over reflective roof membranes can increase the efficiency by 20-35 percent, as they take advantage of the reflected light. For overburden installations, such as blue or purple roofs where the membrane is exposed, reflective membranes are also advantageous. Even though the roof may not always be holding water, or presumably when water is present it is translucent, a reflective membrane contributes to lower roof surface temperatures. Additionally, vegetative roof systems can take advantage of reflective membranes where vegetation is not installed. Codes require that borders and paths are maintained on the roof for fire, access, and maintenance. Reflective membranes at these locations may lower roof temperatures which mitigates interior heat gain, and also decreases the strain of summer heat on vegetation. For solar panel installations, light colored or reflective roof membranes can lower the ambient roof temperature which allows the panels to function more efficiently. Membrane Thickness Roof assemblies should be installed to match or exceed the service life of the overburden systems. The risk of installing a less robust system, such as with a thinner single-ply membrane, could require roof replacement prior to the end of overburden's service life. An unprotected roof membrane should offer enhanced protection against the effects of UV, high service temperatures, punctures, and added foot traffic to help ensure that the roof's life and overburden will match. For single-ply membranes, thicker membranes can provide protection against punctures from the extra foot traffic for overburden service and maintenance. Single-ply membrane thickness significantly improves impact resistance (such as by dropping a tool) by almost 80 percent from 45 mil to an 80 mil membrane. A thicker single-ply membrane also provides additional protection to both UV and high surface temperatures, which is important since a thicker overall membrane provides more thickness over the scrim (reinforcing layer). This portion of the membrane provides weather resistant properties, including UV resistance. A roof membrane in an IRMA assembly should have added protection to punctures and abrasion from roof elements above it, including root damage in a vegetative assembly. For installations where the membrane is on top, it is a best practice to install walkway pads around solar arrays or exposed areas of single-ply membranes to protect against the added foot traffic to service the installations. Membrane Attachment There are two broad categories of roof attachment; mechanically attached via use of fasteners, and adhered. Attachment methods should be reviewed for ease of installation and energy efficiency. Energy efficiency roof assemblies can be directly related to thermal bridging, which occurs when components allow for heat transfer through the roof assembly. Heat loss means that the mechanical equipment will have to work harder to maintain the desired interior temperatures. Thermal bridging occurs at gaps or discontinuities between materials, such as at fasteners in a mechanically attached system. Particularly where the fasteners penetrate the entire assembly from the membrane through the insulation and into the deck, the fasteners provide a direct thermal path from the exterior to the interior. Mechanically attached single-ply systems are also subject to billowing in high wind events. Billowing, or fluttering, of a membrane is when wind causes a negative pressure by pulling interior air into the roof assembly creating uplift force on the roof assembly. Over time, it can cause stress and fatigue on the mechanical attachments and membrane. Interior air that is pulled into the roof assembly equates to energy loss since often the temperature controlled air may warm or cool based on the temperature of the membrane. Overburden installed over mechanically attached systems may billow and flutter with the roof membrane during high wind events. As the membrane flutters and moves, the overburden will shift on the membrane, causing abrasion of the membrane surface. The overburden may also experience stress and fatigue due to movement, which could decrease their overall service lives. Adhered system where only the first layer of insulation is mechanically attached, significantly reduces interior air loss and thermal bridging. Adhered systems that do not use mechanical fasteners greatly reduce thermal bridging by eliminating the path from the interior of the roofing assembly to the exterior. Adhering also prevents billowing of the membrane, by mitigating the interior air that can be brought into the roof assembly. Insulation Insulation is critical in roofing assemblies for overall energy efficiency of the building. The higher the R-value, expressed per inch, the better the thermal performance of the insulation and its effectiveness at maintaining interior temperatures. Higher R-value per inch means less material is required to achieve the desired insulating value. In overburden systems, the roof system thickness can have an impact on the overall design of the overburden system. For example, roof flashings need to extend a minimum of 8-inches past the completed installation. For vegetative systems, this means that the flashing must extend 8-inches past the vegetation. Flashing heights are of particular importance at mechanical curbs and parapets. For a new construction installation, it is possible to raise the heights of the curbs and parapet walls to the desired height, however, in an existing building, this can be problematic. Insulation boards should be installed so that the joints are staggered and offset, and several layers of insulation should be installed rather than just one thick layer. Gaps between boards can decrease insulating ability by allowing thermal loss, an increased condensation potential if air travels into the roof assembly. Air brings moisture, which if allowed to condense, can saturate the insulation boards. Wet insulation has an R value of approximately zero, which is like having no insulation at all. Staggered and offset insulation board joints. Coverboards Inclusion of a coverboard must be considered after selection of the overburden. Rooftops with overburden assemblies not only have increased foot traffic on the roof, but are also an added dead load on the roof assembly. High traffic areas should always be protected with walkway pads. Adding a high-compressive-strength coverboard below the roof membrane will enhance system protection, including compressive strength. Coverboards provide added protection against penetration, including tools dropped by service contractors, wind-borne debris, and hail. A thicker coverboard increases its penetration resistance. The use of high-density polyiso insulation coverboards should be considered since they not only add protection to the roof assembly, but also add an R-value of 2.5 per half-inch. Overburden Layout, Details & Flashings Qualified design and construction professionals should be involved throughout design and construction phases of roof and overburden systems. Overburden layout should address access for installation and both roof and overburden maintenance throughout the component service lives. Inadequate detailing or termination heights leave the roof assembly vulnerable to leaks. Improperly detailed or flashed components may be water-tight for a period of time, but will most likely fail prematurely. Removal of the overburden system for repairs can be an added difficulty and cost. It is good practice to allow penetrations, flashings, expansion joints, drains, and other critical roofing interfaces to be accessible for maintenance and repairs. Flashings should be installed in accordance with current NRCA guidelines and the roof manufacturer's construction details. Ballasted assemblies can block or inhibit drainage resulting in trapped water on the roof membrane. The overburden layout should leave portions of the roof around drains open for both access and drainage and be unimpeded by the overburden. Summary While the roof is the primary defense to prevent water entering into a building, due to the current market trends and legislation, this previously underutilized asset is being recognized by owners for the opportunity the roof offers. There are many overburden options and roof assembly considerations when meeting sustainability goals. Once the overburden type is selected, the roof needs to be determined, which depends on the type of overburden and the ultimate use of the roof space. The overburden's success depends on the roof assembly beneath. For installations such as solar or vegetation, the plants and solar array will need to be removed for repairs or replacement; so, a more robust membrane for the long-term durability and serviceability of the complete roof may be needed. A performance-based approach for energy efficiency requirements (insulation, thermal bridges, and air tightness) versus a prescriptive code minimum may be warranted to ensure a long-lasting roof and to minimize roof replacements over the life of the building. *Resource: Roofing Contractors Associoation of British Columbia
By Kristin Westover
June 15, 2022

In Your Community
Helping the Atakapa Ishak Chawasha Tribe Protect What Matters Most
The Louisiana coast has seen several severe weather events in the last decade, which has made it difficult for many people to rebuild their homes and prepare for future storms. This was the case for the Atakapa Ishak Chawasha tribe, a small community accessible only by boat.The group Rebuilding Together New Orleans recognized the impact a joint effort could have on the region. Together with the GAF Community Matters initiative, and roofing contractor Sunbelt Roofs, the group collaborated with the Atakapa Ishak Chawasha tribe to replace five hurricane-damaged roofs in the tribe's coastal Louisiana homeland.Sowing ResilienceThe week-long roof rebuilding initiative was part of the GAF Community Matters commitment to repair or replace 500 roofs throughout the Gulf region. The goal was to further strengthen and empower the resilience of the families, shelters, and livelihoods of the coastal Atakapa Ishak Chawasha tribe.The Timberline HDZ® RoofCycle™ Series Shingle, which is made with recycled material, was used to protect these homes.Adapting Environmentally"We are stewards of the environment," said Rosina Philippe, a tribal elder of the Atakapa Ishak Chawasha tribe, as she spoke with GAF during the week-long rebuilding initiative. Over a millennium, the tribe has resided in the region, finding all it needs to feed and sustain itself from the environment.However, man-made conditions have significantly impacted the tribe's way of life. The once-forested coastal region is now a salt marsh area, devoid of fresh water and trees, due to levees along the Mississippi River and canals cut through the coastal landscape.These changes have made it "more of a challenge to find the food and plants and medicines that we depend on for our livelihood. But we have been finding them, propagating them, and sharing them with other tribes," said Philippe. "Our way is to accept the natural processes, not change them."Fortifying against Unpredictable WeatherIn addition to the tribe's changing landscape, "what we're dealing with is the unpredictability of the weather," said Philippe. Climate change can cause dramatic temperature swings, which can impact everything from the life cycle of the tribe's crops to the protection of its homes.Situated at the southeasternmost lands of Plaquemines Parish, fingerlike marshland trails out into the Gulf. The homes in the Atakapa Ishak Chawasha community are built on stilts along these watery paths and are accessible only by boat. These homes are often the first line of impact with hurricanes that rip through the Gulf of Mexico.Hurricane Ida—the fifth most expensive hurricane in US history—dealt the water-based community a devastating blow. For nearly two years, the hurricane's impact on tribal homes compounded with each subsequent storm because there wasn't an opportunity to repair its damage.Partnering for StrengthFortunately, through collaborative efforts between the Atakapa Ishak Chawasha, Rebuilding Together New Orleans, GAF, and Sunbelt Roofs, the opportunity to build tribal community resilience through new roofs became available. Bringing in roofing materials and roofers by boat, the Sunbelt Roofs team removed the storm- and hurricane-damaged roofs, repaired roof decking as needed, and installed new GAF roofing systems on the five homes.The roofing materials installed are designed to protect against volatile weather like hurricanes. To provide long-lasting protection against leaks and wind-driven rain, Sunbelt Roofs installed StormGuard® Film-Surfaced Leak Barrier and FeltBuster® Synthetic Roofing Felt. To help prevent shingle blow-off due to high-speed winds, Sunbelt Roofs installed Pro-Start® Starter Strip Shingles.The Timberline HDZ® RoofCycle™ Series shingles that were installed have Dura Grip™ Adhesive, which provides advanced protection from shingle blow-off and wind-driven water creating leaks or water damage.Building Communities TogetherThe initiative with the Atakapa Ishak Chawasha tribe is part of a comprehensive $25 million GAF commitment through 2025 to leverage roofing expertise, resources, and products to help support and empower resilient communities' fundamental needs. Through grants, in-kind donations, and hands-on support, GAF Community Matters is partnering with area organizations that know their communities' needs best.In the Gulf region, GAF partnered with organizations such as Rebuilding Together New Orleans, SBP, Good360, Habitat for Humanity, and Team Rubicon to rebuild or repair 500 Gulf region roofs, train a skilled workforce, and empower communities hard-hit by severe weather.Moving ForwardDespite the challenges of climate change and the changes in their physical landscape, Philippe said, "We still live a rich life here." As the environment changes, the tribe adapts, a demonstration of its resiliency. "These are the new norms that we are having to learn and document and chronicle, this is the information we'll have to pass onto our future generations so that they can continue to inhabit this area," she explained.To learn more about the resiliency work at GAF or to get involved, explore the GAF Community Matters initiative. Special thanks to the Atakapa Ishak Chawasha tribe, a member of the First People's Conservation Council of Louisiana.
By Annie Crawford
April 16, 2024
In Your Community
Supporting Latino Roofing Professionals at the 2nd Annual Latinos in Roofing Expo
Spirits were high at the second annual GAF Latinos in Roofing Expo, where more than 600 Latino roofing professionals gathered in Houston, Texas, for networking, business growth, and education seminars—all in Spanish. "To have a conference dedicated to Latinos, I love it," says Jorge Parada. "I'm sitting next to somebody that looks like me, that speaks the same language. It's a different experience from other conferences."Empowering Attendees at the Latinos in Roofing ExpoThe Latinos in Roofing Expo is one way GAF is working to level the playing field for Latino roofing professionals. Rather than take a one-size-fits-all approach, the expo provides education and resources that consider the Latino community's unique challenges. For example, industry experts taught classes in Spanish such as The Power of Latinos in Your Company's Culture, In-home Selling, Single Ply TPO, Coatings, and The Power of Content Creation for Roofing Companies.In addition to networking with other top-tier contractors, attendees received education in Spanish about the newest GAF contractor products, programs, and trainings designed to help roofers run—and grow—their companies. According to several attendees, these "culturally intended" business growth sessions, offered in Spanish, were one of the most valuable aspects of the conference.Many other conferences and training opportunities expect Latino roofing professionals to thrive with resources that cater to the non-Hispanic, English-speaking contractor community. In contrast, the Latinos in Roofing Expo empowered attendees through culturally intended offerings and shared language."The majority of these [Hispanic] contractors speak English, but it's also cultural. So, the way we do business has to feel culturally intended. Do business like Hispanics do business. Speak the language Hispanics speak," says Alan Lopez, GAF CARE training operations manager. Lopez has been a leading advocate for Latino roofing contractors at GAF and in the roofing industry as a whole.Improving Latino Roofers' Access to ResourcesMany Latino roofers have experienced disadvantages when rising in the roofing ranks because of language and/or cultural differences. For too long, the industry has pigeonholed Latinos into labor roles. As a result, Latinos are drastically underrepresented in roofing leadership, despite making up 57.7% of the roofing industry. Improving access to resources and cultural interactions is a sign of the roofing industry evolving."GAF is the front-runner in helping Latinos, because they have given us so many free resources and free seminars in Spanish," says conference attendee Junior Garcia, CEO. "They have allowed us to get to know what other [non-Hispanic] contractors already know." Some of the GAF culturally intended resources include:Spanish-language GAF website with the same user-friendly features as the English-language GAF website.Spanish-language GAF Document Library for Residential and Commercial GAF roofing products, including technical bulletins, warranty guarantees, data sheets, and more.Spanish-language GAF CARE trainings and resources, including business development courses, hands-on-trainings, and more—all taught with the needs of Latino contractors in mind.Spanish-language events, such as the 2023 GAF Latinos in Roofing Expo, designed to develop Hispanics in roofing leadership.Connecting with Latino ConsumersDeveloping Latino contractors also creates a powerful financial opportunity to serve Latino consumers. This benefits Hispanics in roofing and the roofing industry as a whole.Too often, Latino consumers are overlooked and underestimated. In fact, the Latino consumer base currently has unmet needs of more than $100 billion. Empowering Latino roofers to develop and grow as business leaders is one way to help bring change. "If you want to do business with the Latino community, you have to speak their language," says Hugo Saldaña, GAF territory manager in Houston, Texas.Speaking as a Latino professional in the roofing industry, Saldaña explains that people are at the heart of increasing a consumer base and growing contractor opportunities. "My parents preferred to do business with people who also spoke Spanish, their native language," says Saldaña. "Every day, when I go into work with these guys, it's like helping my dad or my mom. I think when you do that, and these guys know there's a caring relationship there, it goes a long way."Moving Towards the FutureLatinas in RoofingWhile the Latinos in Roofing Expo is a huge win, GAF and the roofing industry still have opportunities to grow. For example, GAF recognizes that female Latina roofing professionals may experience more challenges than their male counterparts. "There are a lot of challenges we [women roofing professionals] face, but there are opportunities for leadership. Now there are more resources and training and more opportunities to build our skills and build our knowledge, and be able to have the same opportunities as men," says Valeria Avila of Servi Express Roofing. GAF provides opportunities to empower women in roofing and recognizes the benefit of forming better bridges between women and the roofing industry.Resources for GrowthAlthough there is work to be done, the 2023 GAF Latinos in Roofing Expo is another step forward for the roofing industry. "Our company has done an amazing job—we now have a Spanish website and cater a lot to the Hispanic community, but there's still greater need," said Andres Beltran, a GAF CARE training manager based in Greenville, South Carolina.As the industry continues to evolve, Beltran encourages Latino roofers to connect with the free, Spanish-language training services and business development opportunities at GAF CARE Contractor Training Centers. "Whether it be from a marketing standpoint, financing, business development, leadership, insurance, and restoration—we can help Latino contractors to elevate their game," says Beltran.Learn more (in Spanish) about GAF resources and GAF certification opportunities today.
By Annie Crawford
January 17, 2024
In Your Community
GAF Roofing Academy Benefits Graduates and Contractors in Southern California
This past fall, more than 50 students participated in GAF Roofing Academy training week in Southern California. The free, week-long event united roofing leaders, contractors, and aspiring roofers, eager to learn the trade. The event concluded with a career fair, which allowed students to immediately meet with potential employers. GAF is a leading proponent of roofing education and training, providing countless opportunities like this to align industry leaders, reduce the industry labor shortage, and empower communities from the ground up with long-term, well-paying roofing opportunities.Helping the Roofing Industry and Graduates"The roofing industry is dealing with a labor shortage and lack of skilled labor," says Scott Bolt, a third-generation roofer and president of Celoseal Roofing in Orange, California. "GAF is the only manufacturer in the construction—not just the roofing but the construction—industry that is listening to the call that contractors need help. The fact that GAF provides contractors with highly organized events like this, with eager recruits and competent trainers—it means a lot to me."The Roofing Academy was just as valuable to the graduates. "I got a roofing job starting this Monday," says GAF Roofing Academy graduate Joncele Cavona Soto. Soto, a US military veteran born in Puerto Rico, served for years while deployed around the world. Recently searching job sites, he learned about the Roofing Academy training. "I applied, was accepted, and now I have a roofing job just one month after leaving the military. This is big for me," he says.Preparing Students for SuccessThe SoCal training covered three key industry sectors: residential steep-slope roofing, commercial low-slope roofing, and roofing sales and insurance. Students chose one focus, then participated in a five-day course combining in-classroom education and hands-on training. Throughout the event, they gained the necessary basic skills to begin a roofing career. The courses were hosted by three GAF certified contractors, eager to share their expertise with the next generation of roofers.BYLTup from Long Beach, California, taught the residential steep-slope roofing class.Celoseal Roofing from Orange, California, taught the commercial low-slope roofing class.Antis Roofing & Waterproofing from Irvine, California, taught the sales and insurance class."When GAF wants to do anything, Antis wants to partner with them," says Charles Antis, owner of Antis Roofing & Waterproofing. "Yesterday, GAF donated 60 squares of shingles to the Sister League of San Diego that we installed." The GAF Community Matters ethos matters to Antis. "We can go into communities across the country and bring people into the trades that otherwise wouldn't get here. I'm super gung-ho about the GAF Roofing Academy," he says. His business has partnered with GAF on seven roofing classes over the years, plus the roofing sales and insurance course at the Roofing Academy event.Students weren't required to have experience—just a passion to learn the trade. "I saw GAF Roofing Academy scrolling through Instagram," says 22-year-old Angelique Mojina from Fontana, California. "I clicked and I signed myself up. I wanted to leave warehouse work and this was my opportunity." Now that Mojina has graduated, the ability to put a roof over someone's home gives her a feeling of gratitude and accomplishment.Securing Jobs and Reducing Labor ShortagesWorkers and companies who participated in the GAF Roofing Academy training week enjoyed immediate benefits.At the career fair, Nathan Blackburn, general manager at Celoseal Roofing, says, "We've hired 20 people today. It's amazing. We've complained for years about not being able to find qualified employees, and now I've got 20 eager people knocking on my door who just spent a week learning how to roof. They want to work; they want this opportunity."The academy also fostered mutually beneficial relationships. Bolt of Celoseal Roofing worked side by side with students in his commercial low-slope roofing class. One student in the class brought him a job application, and he offered him a position with Celoseal Roofing on the spot. "Over the week, I had seen his natural potential, ambition, compassion for co-workers, and leadership skills," he says. "He's looking for a career and a change of direction in his life, and we have something to offer him. He'll onboard Monday, so we have our first recruit."Fostering a Rewarding Career PathThe GAF Roofing Academy offers a new path forward for students of all walks of life. Jacob Mosprey from Anaheim, California, worked in security for 17 years. "In security, you secure property and protect life, but you're not held in high regard. And there was no growth opportunity," he says. "I have a wife and three kids. I want my wife to know she has a husband who has a respectable career."Mosprey's journey is a powerful and hard-won story of perseverance. "During my life, I did go through homelessness, and I was incarcerated a couple of times," says Mosprey. "Now... I appreciate my struggles." Participating in the Roofing Academy has given him a new skill set and an opportunity to improve his own life, as well as the lives of others.Interested in participating in the GAF Roofing Academy and changing your trajectory? Enroll as a student today or partner with GAF Roofing Academy as a contractor.
By Annie Crawford
January 03, 2024
In Your Community
The Importance of Safe, Quality Sports Courts
Longtime fixtures of playgrounds and recreational areas, sports courts have a lot to offer. In addition to providing opportunities for children and adults to participate in physical activities, they can strengthen communities. There are also other benefits when courts are designed to reduce surface temperatures and protect substrate materials.Here's a comprehensive look at the benefits of safe, quality sports courts and the impact innovative pavement coatings can have.Current Challenges with Outdoor CourtsSports court coatings were developed to help address challenges faced at many levels. By enhancing courts' durability and design, communities are provided with tangible solutions that address many of these challenges.Increasing TemperaturesClimate change and the heat island effect in urban areas—where hard surfaces like pavement absorb and retain the sun's heat—have led to higher temperatures, potentially affecting the amount of time people can spend outside. Solutions such as building covered structures can be expensive and require a lengthy design and construction process. Planting trees and other landscaping for shade is effective but can take years to develop.Shrinking BudgetsAt the same time, many schools, municipalities, and community organizations have reduced budgets. Play areas are often seen as inconsequential to curriculum, and it can be easy to defer upgrades or repairs.This has caused facilities to put construction plans on hold and instead search for ways to reduce maintenance costs while extending the useful life of their outdoor equipment and paved surfaces. Staff are tasked with providing options for outdoor activities without investing in expensive equipment or major site renovations.Growing Health ConcernsIn response to these environmental and financial challenges, children have been experiencing less outdoor time and lower physical activity levels. This has been found to play a factor in obesity and mental health. Additionally, regular physical activity for students leads to increased concentration and focus, improved attendance and behavior, and boosts academic performance.Outdoor play is a great way to get physical activity, form relationships, and work through difficulties. In fact, the American Red Cross recommends using play to help children manage their emotions. Many studies have shown the value of structured and unstructured play for children, reporting it helps build social skills and encourages creativity.4 Benefits of Pavement Coatings for Outdoor Sports CourtsSports court surface coatings can address these challenges while providing additional benefits.1. Space FlexibilityTraditional playground equipment or court markings can limit the outdoor space's use. With a rich palette of colorful coatings and designs, pavement coatings can provide opportunities for a variety of activities.For example, four square courts can be embedded in traditional basketball court areas, or unique designs can spark imagination, allowing children to create their own games. Providing both children and adults with fewer constraints in how a space is used can help foster creativity and encourage new forms of exercise and play.Some durable, next-gen pavement coatings may even offer opportunities to create courts that can stand up to vehicular traffic for increased flexibility, providing the ability to turn a court into overflow parking or turning excess parking into a multi-court surface.2. Lower CostsDurable pavement coatings can help reduce maintenance costs, by protecting asphalt and cement from damage, which can reduce cracks and extend the usable life of the asphalt or cement substrate. Additionally, coatings may cost less to install than resurfacing or purchasing new equipment.3. Temperature BenefitsHardscape surfaces absorb heat, which can increase the air temperature near the surface. By incorporating lighter-colored or solar reflective surface coatings, more heat can be reflected off the surface, reducing the temperature of the surface and potentially, the air temperature near the surface. This can result in cooler outdoor spaces for children and adults to play, which may increase the amount of time they can engage in physical activity.4. Increased Activity LevelsStudies have shown that creative outdoor play spaces can help increase activity levels and engagement, especially when the surface temperature of the play area has been reduced. An initiative in Boston, which included creating varied outdoor play courts, led to increased physical activity, improved student behavior, and stronger community relationships. In Los Angeles, similar projects led to a 4% gain in the number of students obtaining an hour or more of physical activity per day and a 7.9% decrease in the number of students considered overweight.How Court Coatings Encourage PlaySchool may be the only opportunity children have to engage in physical activity, sports, and general play. Reports have repeatedly shown that play patterns can change significantly when colorful coatings are used.These coatings can help encourage structured activities and games, like four square or hopscotch, or provide the basis for unstructured activities, such as drawing the school logo or a mural. Students can also learn through these surfaces when the pavement is painted with maps or planets. These coatings can have social benefits as well. Playgrounds with a variety of play options may also lead to decreased injuries and an increase in game participation.How StreetBond® Can HelpWhen assessing whether to add or transform a hardscape into a sports court, look at three main factors: budgets, safety and health concerns, and the value of play.StreetBond® pavement coatings can help schools and community organizations transform their hardscapes into robust play areas while meeting their budget constraints. Coatings can help reduce surface temperatures, protect surfaces, and encourage more creative play, helping communities get healthier while learning to work and live together. Visit the StreetBond® website to explore available products, or email streetbond@gaf.com to get support and discuss specific projects.
By Dawn Killough
November 17, 2023

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