Foundation Board

Foundation board is installed over the rubberized elastomeric membrane on the exterior of the foundation. It is an insulated board designed to direct water down to the drainage system (washed rock and weeping tile), provide a thermal break (separating the ground from the foundation), protect the membrane during backfill and absorb some of the compressive forces from the soils around the structure. At LETY Construction, we use Warm-N-Dri foundation board by Tremco Barrier Solutions. It is embedded into the hot elastomeric membrane, eliminating the need to mechanically fasten the board to the wall.