River wash gravel is put in the drain line trench to aide in water stream. We then put in Polydrain, an air-gap technology drainage board at the cove place where the foundation wall meets the cellar floor. This heavy duty built drainage matting is bent and put the wall up and above the trench. It raises water drainage and directs intruding water due to hydrostatic pressure into the subgrade tile system. Following the installation of the Polydrain that the trench is sealed using commercial grade concrete.
Interior Basement Waterproofing solutions may also include things like wall systems. Alternatives are a 6 mil polyethylene vapor barrier which is tucked into the Polydrain and installed normally from floor to ceiling. For a cleaner look and for walls using a high moisture content Polywall, an extruded resin sheet can be installed. It is easy to wash, 100% waterproof and doesn’t support mold, mildew or bacteria development. For wall regions with higher water content, like corners, problem areas or old structure, Polydrain may be installed full wall or chest elevated. There are also commercial grade epoxy and polymeric acrylic coatings available.