Paraseal® GM/LG is a sheet waterproofing and methane-mitigating membrane consisting of 20 mils (0.5mm) of HDPE, expandable, granular bentonite and a protective layer of spun-bonded polyester. The composite weight of the materials is up to 1.0 lb/ft2, creating a dual waterproofing system.
Paraseal GM/LG is designed for use in post-installation submerged conditions, on blindside walls, shotcrete walls and under-slab where hydrostatic water head and/or methane conditions exist. It may also be used on backfilled walls.
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