Viper II Class A 10 mil VaporCheck Vapor Barrier Under Slab Vapor Barrier 14' x 210' Textured Overlays such as Ram Board Seam build ramps such as Ram Board Seam Tape® or Pro Tape They are direction specific Viper II 10 mil controls condensation Viper II 10 mil is a unique high strength polyolefin based under slab vapor barrier specifically designed for preventing moisture migration through concrete slabs on grade
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