Interior Drain Tile
A drain tile system relieves hydrostatic pressure below the basement slab and lateral pressure behind foundation walls created by ground water. It does so by accepting the water and draining it to a sump pump, where it is safely discharged away from your foundation.
1. Building materials and perimeter concrete are demoed. A trench is dug and a perforated drain pipe is installed next to the footing, pitched toward the sump. By catching the water as it comes under the footing, hydrostatic pressure is relieved.
2. The drain pipe is plumbed into a sump basin where a sump pump discharges water away from the foundation. Waterproofing Northeast installs primary and battery backup sump pump systems.
3. Weep holes are drilled in every core and seam of a block wall to allow water to "gravity drain" into the drainage system. This relieves lateral pressure.
4. 3/4" river rock filters out "fines" like sand and silt so only water is allowed to enter the drain pipe. In this image, the discharge line from the sump is laid in the trench. Once the concrete is finished,
5. Dimpled drainage board covers the weep holes and channels water to the drain tile system.
6. After the cement cures, the wall is ready to be refinished.