Mapeproof SW

Bentonite Geotextile Sheet Waterproofing Membrane for Salt/Contaminated Groundwater

Mapeproof SW waterproofing membrane is composed of a proprietary blend of sodium bentonite and a special polymer encapsulated between two polypropylene geotextile fabrics – a nonwoven and a woven fabric – at a rate of 1.1 lbs. per sq. ft. (5.3 kg per m²). The nonwoven fabric is needle-punched through to the woven fabric, with thousands of fibers mechanically locking the sodium bentonite blend in place. After backfill is placed and confined under pressure, Mapeproof SW hydrates and forms a monolithic waterproofing membrane when exposed to moisture. The proprietary blend of sodium bentonite and polymer enables Mapeproof SW to form this monolithic waterproofing membrane when exposed to salt and other contaminants.

Mapeproof SW contains zero VOCs and can be installed in most weather conditions as well as to green concrete. The swelling characteristics of the sodium bentonite clay in Mapeproof SW can seal small concrete cracks caused by ground settlement, concrete shrinkage or seismic action. Mapeproof SW also forms a strong mechanical bond to concrete when the concrete is poured onto the nonwoven geotextile fibers.