BENTONITE GEOTEXTILE SHEET WATERPROOFING MEMBRANE FOR SALT OR CONTAMINATED WATER APPLICATIONS
Mapeproof SW waterproofing membrane is composed of sodium bentonite encapsulated between a woven and nonwoven polypropylene geotextile fabrics. The nonwoven fabric is needle-punched through to the woven fabric, mechanically locking the sodium bentonite clay in place with thousands of fibers. In the presence of water, the sodium bentonite hydrates and swells forming a monolithic waterproofing membrane. Ideal for horizontal slabs, vertical blindside and backfilled wall applications in the presence of salt or contaminated groundwater conditions.
Features and Benefits
- Includes a special additive for mitigating the affects of salt and contaminated water on the swell index
- High swelling index helps prevent water intrusion
- Can be installed over damp or green concrete at least 3 days old
- Self-healing if punctured
- Not affected by rises and falls in the water table
