Viper II below-slab vapor barrier is the first line of defense against damaging water vapor and soil gas threats existing below the concrete slab. Viper II products are multi-layer (co-extruded), virgin polyolefin under-slab vapor barriers/retarders. The virgin resin used to manufacture Viper II contributes to its long-term stability and prevents the material from breaking down when used as a vapor barrier for concrete slabs. Viper II prodcuts  exceed ASTM E 1745 “Class A” guidelines.

  • <p>Strong puncture resistance
  • Excellent water vapour permeance
  • Radon and methane barrier</p>


Accessory products

Product role

Vapour barrier

Building Component


VIPER II  product line

Complementary Product

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