Hybrid roof assemblies by GAF bring two roofing membranes into one roof system. Base layers of asphaltic modified bitumen with a top layer of reflective single-ply membrane combine the best selected characteristics of both materials. The inclusion of a bottom layer of an asphaltic membrane provides redundancy and protection against punctures and adds thickness to the system. The addition of a single-ply reflective membrane over a dark-colored asphaltic membrane greatly increases the Solar Reflectance Index of the roof surface. The company’s hybrid roof solution offers the opportunity to select a membrane or cap sheet to address specific challenges, including exposure to certain project specific conditions or the need for overburden, and more.
Hybrid Roofing System
