GAF 0915000MV Roofing Leak Barrier, 66.7 ft L, 36 in W, Fiberglass, Black

Smooth, film surface link barrier with special adhesive for one-time repositioning, but aggressively adheres over time. Unique film surface pattern improves footing even in hot weather. Self seals around nails or metal roofing fasteners. Split back release film peels off in layers for faster installation and greater homeowner value. Fiberglass reinforcement helps resist wrinkling and buckling. Lays flatter under shingles. Design to withstand high metal roof temperatures and will not melt or flow. High temperature compound is suitable for most metal roof applications. For application under copper and zinc. Passes low temperature flexibility (-20 deg) and waterproof integrity after low temperature flexibility requirements. Can be exposed for up to 60 days if necessary.