Viper VPVC210 10-mil Class A Under-Slab Vapor Barrier

Viper II 10-mil is a co-extruded, virgin polyolefin under-slab vapor barrier. Viper II 10-mil exceeds all ASTM E 1745 Class A under slab vapor barrier requirements.

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Viper VaporCheck II (Viper II) 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 buried below the slab. Viper II is engineered with superior resistance against punctures, tears and water vapor. The high puncture resistance and tensile strength greatly reduces potential damage when exposed to rigorous job site conditions. Furthermore, Viper II products have very low water vapor permeance properties, key to preventing water vapor migration.


Manf Part Number VPVC210
Condition New
Weight 135.000000
  • ASTM E 1745 Class A Vapor Barrier
  • High puncture resistance
  • High tensile strength
  • Low water vapor transmission
  • Protect against radon, methane and water vapor
  • Made from 100% virgin resin
  • Maintains long term performance under slab
Skid Count 20
Prop 65 Warning
Prop 65 Warning Warning

This product can expose you to a chemical (or chemicals) that are known to the State of California to cause cancer or reproductive harm. For more information go to