Methane permeance results

Oxygen permeance results

* Tests performed on Underseal Protected Wall Waterproofing Membrane also are applicable to Underslab Waterproofing Geomembrane & Split Slab Waterproofing Membrane. These materials contain the same components as Protected Wall Waterproofing Membrane, except that Underslab Waterproofing Geomembrane & Split Slab Waterproofing Membrane are thicker. For Underslab Waterproofing Geomembrane & Split Slab Waterproofing Membrane, resistance to methane gas permeance should be slightly better because of the increased thickness.

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As of 9/1/2003, Polyguard Products' quality system has been certified to American, Dutch, and German quality systems requirements: - American Natl. Standards Institute - Dutch Council for Certification - Deutscher Akkreditierungs Rat