Top 10 No 2

Low-Slope Roofing Mistake No. 2: Not cleaning the membrane

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When patching a single-ply membrane, whether it’s to reinforce or repair, step one should always be cleaning the surface. Patches welded to a dirty membrane will tend to pull up, creating a leak risk. 

GAF Senior Commercial Training Specialists Dave Scott and Wally Brown share tips on preparing TPO for repair in this episode of Roofing it Right with Dave and Wally. In this segment of their Roofing it Right miniseries on the Top Ten Mistakes in Low Slope Roofing, the two experienced pros tackle the importance of restoring the sheet’s bright white appearance to help get the best possible weld.  

Their pro tips include cleaning the membrane with water, a scrubbing pad, non-abrasive household cleaner, and Everguard TPO Seam cleaner. 

For even more information, check out their video on how to clean the roof membrane, here. 

They also advise using reinforced material to patch any holes in the field of the roof.

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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