Sub-Grade Wall Drainage and Waterproofing

In-progress installation of drainage mat over lagging wall prior to installing waterproofing system.

Detailing of double-layer bentonite waterproofing at soldier-pile Nelson studs at sub-grade lagging wall.

Third step at pipe penetrations through sub-grade wall.

PL:BECS has been designing, specifying, and supervising the installation of sub-grade wall  drainage and waterproofing systems for over a quarter-century, including for various exceedingly-challenging situations, such as for highly-finished, moisture-sensitive spaces submerged well into the site water table and supported atop highly-dynamic, expansive soils.  Past designs have spanned the full spectrum of products and assemblies, including bentonite-clay, non-reinforced and reinforced cold and hot-applied fluid systems, self-adhered sheet membranes, composite sheet membrane and bentonite-clay systems, integrated bentonite-polymer materials, concrete-activated sheet membranes, catalyzed fluid membrane systems, drainage mats, geotextile fabrics, bentonite and swelling-sealant joint water-stops, drainage piping, crack-resistant concrete mixes, epoxy and polyurethane injection grouts, related mastics, sealants, and other materials.