J & S Supply is a committed distributor of Johns Manville PermaPly 28 serving New York, NYC, Brooklyn, Queens, Long Island, Westchester, New Jersey, and Connecticut. PermaPly 28 is designed for use as the first or base sheet in built-up roofing or modified bitumen roof assemblies. Lightweight and exceptionally pliable, it is easy to handle and lays flat.
PermaPly 28’s asphalt coating makes it suitable as an intermediate or ply felt in cold-applied built-up and modified bitumen roof assemblies. And, its fiber glass reinforcement mat, low moisture, excellent dimensional stability, and resistance to rot make it an ideal replacement for organic base or ply sheets. PermaPly 28 provides a solid dimensionally stable substrate for other roofing membrane components.
PermaPly 28 features laying lines imprinted on the top surface so the roofing mechanic can easily install the felt with the proper exposure and provide the correct number of plies. It’s surface is coated with a fine mineral parting agent and it is UL Classified. It can be installed with hot asphalt, cold applied or with mechanical fasteners.