The Garland Company, a full-service roofing manufacturer and building envelope solution provider based in Cleveland, announced the newest addition to its KEE-Stone family of thermoplastic roofing membranes: KEE-Stone HP. This membrane incorporates one of the industry's highest-quality ketone ethylene esters, Elvaloy HP, for superior flexibility, strength, and chemical and UV resistance.
KEE-Stone HP is a fleece-backed thermoplastic membrane designed as the cap sheet in a multi-ply hybrid system incorporating Garland-approved modified bitumen base sheets. KEE-Stone HP meets and exceeds the ASTM D6754 certification, the standard specification for KEE-based sheet roofing. Garland is the sole ASTM D6754 manufacturer harnessing the power of the HP Elvaloy polymer in its formulation.