How to Repair Hail Damage on Low Slope Granule Surfaced Membranes
We are deep in the spring storm season and many areas in the country have been pummeled by hail.
Hail is an enemy to roofs and can cause impact damage and displace the protective granules on low slope granule-surfaced membranes. Contractors and building owners need to know what to look for, what to do and how to repair minor impact damage in order to save time and money.
GAF recommends that property owners document all storm related damage, collect local weather data and notify their insurance carrier if necessary. In addition, do a visual inspection of the roof for damage and take photographs as well.
If there is minor damage on low slope granule-surfaced membranes, coating the damaged roof membrane is an acceptable solution when there is visible granule loss, but make sure there is no other obvious damage to the roof membrane or underlying substrate. This repair is considered part of routine maintenance. Do not repair the membrane with a coating if the damages are enough to cause leaks or allow moisture to enter the roofing membrane or building envelope. This includes cuts, punctures, tears or cracks.
Repairs should be done as soon as possible to reduce further damage. GAF Certified Contractors can make these repairs by identifying roof areas where hail has caused excessive granule loss. They can then prepare the surface for appropriate coating application, apply approved TOPCOAT® liquid-applied roof coating to the damaged area and if desired, get colored roofing granules to put into the wet coating to match the existing roof color and texture.
The GAF Diamond Pledge™ Roof system guarantee does not cover hail damage or usual weather conditions or natural disasters, however hail riders are available in certain circumstances. For more questions about hail damage, contact GAF technical services at 800-ROOF-411.
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