Roll roofing membrane

Static structures (e.g. – buildings) – Lapped multiplanar surfacing; e.g. – shingle type – Interfitted sections

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Details

52409, 52445, 52453, 52519, 5274611, 428152, 428489, 156337, E04D 110

Patent

active

061348562

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

REFERENCES:
patent: 3937640 (1976-02-01), Tajima et al.
patent: 3967032 (1976-06-01), Plotz et al.
patent: 4610902 (1986-09-01), Eastman et al.
patent: 4825618 (1989-05-01), Blevins
patent: 5895536 (1999-04-01), Starr et al.

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