Top 10 No 10

Low-Slope Roofing Mistake No. 10: Missing Base Attachments

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Base attachments — the plates and fasteners that secure the membrane around roof penetrations — are required for both mechanically attached and fully adhered membrane systems. They should be installed every 12 inches on center.

According to GAF Senior Commercial Training Specialists Dave Scott and Wally Brown, missing base attachments at walls, curbs and penetrations is one of the top ten mistakes in low-slope roofing. In this segment of the Roofing it Right with Dave and Wally miniseries on the Top Ten Mistakes in Low Slope Roofing, the two pros offer suggestions on how to properly install base attachments, as well as what to do if you find that they’re missing. 

Check out the episode here:

And be sure to check out the entire top ten list, along with the complete collection of entertaining and educational Roofing It Right episodes (muchos de ellos disponibles en español), at

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