Exterior Foundation Drain Installation Process

  1. All underground gas, water, cable, telephone and electric utility lines are determined at least three full business days before digging starts.

  2. The digging area and discharge method are determined. Existing areas such as Drywells or street storm drains are checked to see if they can be used for discharge. If not, a Sump Pump is installed.

  3. A hole is dug all the way to the footing to install a drain pipe leading away from the house or to a adjacent Sump Pump. The drain pipe requires plenty of clean gravel all around it and the use of proper filter fabric.

  4. The exposed wall is power washed and two coats of Rubberized Asphalt Membrane is applied. After drying, a 60-mil composite membrane (CCW MiraDRI 860/861) self-adhering sheet membrane is placed on top.

  5. A drainage board is installed (CCW MiraDRAIN 6000/6200) on top of the membranes mentioned above. This drainage board is a high-flow, high-compressive strength, vertical single-sided subsurface board that will not only protect the composite membrane but also drain water from the soil directly into the foundation drains below.

  6. Perform backfill and clean up operations.