All of our information is sourced from manufacturer data.
ISI Building Products
Vapor Retarder (Class I)
Ceiling, Sloped Roof, Wall
Standard Sizes: 12' 0"
Standard Sizes: 16' 8"
Standard Sizes: 0", 0"
Manufacturer Design Notes
Viper VaporCheck 10-mil is manufactured using the latest generation of prime virgin (non-recycled) polyethylene resin, constructed in a triple-ply extrusion coated process and engineered with physical properties that maintain long-term performance. The extrusion coated process bonds woven high-density fibers together, using molten polyethylene.
Rate of airflow through the barrier per square foot at a specified pressure difference
Product Weight Per Area
Water Vapor Transmission
An imperial perm is defined as 1 grain of water vapor per hour, per square foot, per inch of mercury
Roll Tensile Strength
Weight needed to break the roll, per inch of width
lbs / in
Minimum Temperature Rating
The lowest temperature that the product has been confirmed to still function at.
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