At Alpha, we feature bentonite waterproofing panels that encase a layer of sodium bentonite between two layers of fabric. Bentonite is a clay that naturally expands when exposed to water, creating a self-healing surface that automatically repairs leaks. Our bentonite panels are ideal for sealing wet locations like the underside of concrete slabs or foundation walls. They are also ideal for property line and lagging operations and below-grade waterproofing.