Viper II Underslab Vapor Barrier Class A - Full Range Size:10 mils x 14 ft x 210 ft (Grey) 81"Height - 21

81"Height - 21

Thrust ratio 22:1

#4500 is compatible with Lucas water-based acrylic coatings

Thickness R-Value Board Size

Viper II Underslab Vapor Barrier Class A - Full Range Size:10 mils x 14 ft x 210 ft (Grey) 81"Height - 21Viper II is a unique high strength polyolefinbased under slab vapor barrier specifically designed for preventing moisture migration through concrete slabson grade. Viper II 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