TOPCOAToffers a liquid, seamless rubber membrane that is applied directly to the entire surface of a metal roof.

TOPCOAT, a subsidiary of GAF, Wayne, N.J., offers a liquid, seamless rubber membrane that is applied directly to the entire surface of a metal roof. The flexible membrane provides a layer of waterproof protection that actually cures in the sun’s ultraviolet rays, providing increased protection with time. Systems can be used on many roof surfaces including smooth and granular BUR, SBS and APP membranes and single-ply roofing.