ROLL ROOFING MEMBRANE

摘要

An improved roll roof membrane (10) for use in commercial applications, i.e., flat and low pitch roof structures, and a method for the preparation thereof. The roof membrane (10) includes a support sheet (12), and top (14) and bottom (16) layers of APP modified bitumen. The top (14) APP modified bitumen layer having a selvage edge (18) disposed along one side of the membrane (10) and the bottom (16) APP modified bitumen layer having a second selvage edge (20) disposed along the opposite side of the membrane (10). Each of the selvage edges (18, 20) have a series of embossed ridges (22) and valleys (24) adapted to accept adhesives, the valleys (24) extending substantially through the APP modified bitumen layer (14, 16) to the support sheet (12). The membrane (10) exhibits excellent peel strength with an adhesive, thereby eliminating the need to use a torch during installation in commercial roofing applications.