SENTINEL® Copper Art® P150 HFB is a high performance, polyester reinforced, thermoplastic polyvinyl chloride (PVC) roof membrane, specially designed to provide unmatched flexibility and long-term performance. SENTINEL® membranes provide the proven fire and chemical resistance of PVC along with superior weldability, making it easy to conform to complex geometries. SENTINEL® Copper Art® P150 HFB utilizes a specialized process that allows copper metallic powder to incorporate into the PVC blend, producing a non-pigmented copper-PVC membrane that will not chalk or fade. SENTINEL® Copper Art® P150 HFB not only provides the aesthetics of a copper roof, but it will also oxidize gradually, taking on the patina color, just as copper does, when exposed to the elements. SENTINEL® Copper Art® P150 HFB incorporates a 300 gram fleece backed underside.