Viper II Class C is a unique high strength polyolefinbased under-slab vapor retarder specifically designed for preventing moisture migration through concrete slabson-grade. Viper II Class C reduces water vapor emission transfer and moisture migration from entering the building envelope on commercial, industrial and residential applications. Viper II controls condensation, mold, mildew, degradation and prevents costly flooring failures and damage to moisture sensitive furnishings within a building’s interior. Viper II Class C may be used to reduce radon and methane gas migration and is resistant to other adverse soil conditions. Benifits Manufactured using multi-layer extrusion technology from virgin polyolefin resin Maintains long-term performance after exposure to adverse soil conditions Exceeds ASTM E 1745 “Class C” guidelines High puncture and tensile strength Greatly reduces moisture migration through slab-on-grade applications
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