GAP WaterGuard AMT Architectural Metal & Tile Synthetic Roofing Underlayment is a polypropylene, two-side coated woven fabric containing a patented slip resistant surface.

GAP WaterGuard Self Adhered Cap Sheet is an SBS-modified fiberglass cap sheet used as the surface membrane on a roof system.

WaterGuard Rain & Ice is a specially designed and manufactured, self-adhering underlayment for use on steep slopes and as a flashing membrane in areas susceptible to leaks, such as valleys, roof-to-wall transitions, and around vents, curbs, skylights and other roof penetrations.