Versico's VersiWeld TPO reinforced membrane is a premium, heat-wieldable, single-ply thermoplastic polyolefin (TPO) sheet designed for new roof construction and re-roofing applications. VersiWeld High Slope (HS) membrane is formulated with additional flame retardant for higher slope fire code approvals. VersiWeld Plus is 80-mils thick for significantly higher strength and weather ability. VersiWeld TPO membranes use advanced polymerization technology that combines the flexibility of ethylene propylene (EP) rubber with the heat weldability of polypropylene. All VersiWeld TPO membranes include OctaGuard XT™, an industry-leading, state-of-the-art weathering package. OctaGuard XT technology enables VersiWeld TPO to withstand the extreme weather ability testing intended to simulate exposure to severe climates.