River wash gravel is placed in the drain line trench to aide in water stream. Then we install Polydrain, an air-gap technology drainage board at the cove place in which the base wall meets the cellar floor. This heavy duty built drainage matting is bent and placed up the wall and above the trench. It raises water and directs intruding water due to hydrostatic pressure to the subgrade tile system. After the installation of this Polydrain that the trench is sealed with commercial grade concrete.
Chevy Chase Basement Waterproofing solutions can also include things like wall systems. Alternatives are a 6 mil polyethylene vapor barrier that’s tucked into the Polydrain and installed normally from floor to ceiling. For a cleaner appearance and for walls with a high moisture content Polywall, an extruded resin sheet could be installed. It’s easy to clean, 100% waterproof and doesn’t support mold, mildew or bacteria development. For wall areas with higher water content, like corners, problem areas or older structure, Polydrain can be installed complete wall or chest high.