The KEE-Stone FB 60 Flashing is a 60-mil high-performance Ketone Ethylene Ester (KEE) thermoplastic membrane enhanced with Dow ELVALOY™ HP for superior flexibility and strength. Under the attractive, bright white surface, this membrane is reinforced with a high tensile strength polyester scrim coated with an enhanced binder for powerful adhesion to the KEE compound. This distinctive composition provides exceptional puncture, tensile, and tear resistance while preserving the membrane's flexibility. A non-woven polyester fleece (6.5 oz. per sq. yd.) is heat bonded to the backside of this membrane for superior adhesion in hot or cold adhesives. KEE-Stone FB 60 Flashing is designed as the top component in a two-ply flashing system. This membrane forms a complete flashing system with approved Garland-modified bitumen base sheets. Specifications are available for both hot- and cold-applied systems. The KEE-Stone family of products meets and exceeds ASTM D 6754, the standard specification for KEE-based sheet roofing. KEE-Stone's unique KEE formula enhances the performance of standard PVC by making it permanently flexible and locking in the plasticizer to prevent the membrane from drying out and cracking.
