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What is Viper® II  
Product Information
Composition
Multi-layer, high performance,
virgin polyolefin plastic extrusion.
 
Thickness, Class, Color, Roll Size
15-mil Class A  (Blue) 14' x 140'
10-mil Class A  (Gray) 14' x 210'
 
10-mil Class C (Black) 14' x 210'
6-mil   Class C (White) 14' x 210'
 
Viper II Flyer
Viper II Installation Video

Technical Data pdf
Viper II 15-mil Class A Specification
Viper II 10-mil Class A Specification
 
Viper II 10-mil Class C Specification
Viper II 6-mil Class C Specification

word Product Specs
Viper II 04 033000 FULL
Viper II 04 033000 CLEAN
Viper II 95 033000 FULL
Viper II 95 033000 CLEAN

Product Submittals pdf
Viper II 15-mil Class A Submittal
Viper II 10-mil Class A Submittal
 
Viper II 10-mil Class C Submittal

pdf Accessories
4" x 180' White Poly Seam Tape
Viper VaporPatch
VaporCheck Mastic
Viper VaporCheck II (Viper II) under-slab vapor barriers/retarders are manufactured using the latest generation of prime virgin (non-recycled) polyolefin resin. Viper II products are constructed in a multi-layer plastic extrusion process and engineered with physical properties that maintain long term performance. The multi-layer extrusion process creates an excellent balance of strength while highly restricting the transfer of water vapor. Viper II comes in a variety of thicknesses and offers premium protection against soil gas and water vapor diffusion through the concrete slab.
 
Why is a Vapor Barrier Neccessary Under Concrete
Concrete is a naturally porous material. Unprotected concrete slabs (slabs without a vapor barrier/retarder) gain water vapor, through vapor diffusion, from sources below the slab. This moisture migration creates a conflicted environment for the floor coating or adhesive. In addition to potential flooring failures, moisture migration has been know to cause the following: poor indoor air quality (IAQ), mold, mildew, fungi and damage to the slab on grade and its components.
 
How Does Viper® VaporCheck® II Help
Viper VaporCheck II (Viper II) is uniquely manufactured to incorporate superior resistance against punctures, tears and water vapor. With these properties, Viper II creates a monolithic barrier between the concrete slab and the soil that is virtually impervious to water vapor and soil gases. Most importantly Viper II maintains these properties (long term) thus performing and lasting the lifetime of the building. Viper II helps by presenting all parties involved with an inexpensive insurance policy against costly building liabilities associated with water vapor migration through concrete slabs.
 
Construction Specification Institute Categories:   Viper II Catalog
- CSI Division 3: Concrete
- CSI Division 7: Thermal & Moisture Protection
under slab vapor barrier
 
 

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Viper II Installation
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