J & S Supply is a committed distributor of Johns Manville APPEX 4.5M & 4S Modified Bitumen serving New York, NYC, Brooklyn, Queens, Long Island, Westchester, New Jersey, and Connecticut. APPEX 4.5M  is used as a cap or flashing sheet in APP multi-ply roofing systems. APPEX 4S is used as a cap or base sheet in APP multi-ply roofing systems. Both are available in 10.1 m long rolls providing coverage of 95.8 ft2.

Johns Manville APPEX 4.5M & 4S Modifed Bitumen are extremely durable with excellent weathering characteristics, flexibility and dimensional stability for ease of handling and quick installations. Both are bidirectional glass-scrim reinforced and offer robust tear strength and puncture resistance, allowing for high wind performance and excellent hail rating. They also exhibit strong dimensional stability and enhanced elongation.

Johns Manville APPEX 4.5M is specifically engineered for optimal embedment in the APP-blended sheet. The ceramic coating promotes excellent long-term adhesion. APPEX 4S is engineered with a fine mineral parting agent on the top of the sheet. Both have a polyolefin burn-off film enables the product to be applied using heat-welding techniques.

Johns Manville APPEX 4.5M & 4S
4.5M Data Sheet
4S Data Sheet

Our prime location in Long Island City is close to every major thoroughfare in the Metropolitan New York, New Jersey, and Connecticut area, ensuring our fleet of specialized equipment can deliver fast.


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