Mechanically Fastened PVC Single Ply Roofing Membrane SystemsJohns Manville PVC roofing materials are a highly-engineered, flexible, thermoplastic membrane manufactured using an ultraviolet-resistant polyvinyl chloride and a DuPont™ Elvaloy® KEE (ketone ethylene ester) formulation. It provides excellent weathering characteristics, high tensile strength and long-term flexibility. It also exhibits excellent resistance to harsh chemicals and industrial pollutants. PVC Single Ply System — JM PVCPVC roofing systems result in a cleaner, quicker, more economical installation able to withstand heat, wind, rain, varying temperatures and many contaminants. The heat-weldable seams provide a unified, watertight seal as strong as the membrane itself. Systems can be installed fully adhered or mechanically fastened. A complete line of accessories, sealants and adhesives is also available. Johns Manville Roofing Systems |