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The company’s KEE-Stone FB 60 fleece-backed thermoplastic membrane is formulated using the highest grade DuPont HP Elvaloy Ketone Ethylene Ester (KEE) to provide superior resistance to UV degradation and heat while retaining low-temperature flexibility. In accelerated weather tests, the product showed no signs of cracking or cratering even at 100 times magnification, which is 10 times more than the ASTM 6745 standard requires. Containing the KEE formulation throughout the entire sheet, the membrane is reinforced with a polymer-coated, high-performance scrim. The design allows the KEE compound above and below the scrim to fuse together, providing exceptional puncture, tear, and tensile strength.
Content Category: Roofing