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french drain

Posted by bc on January 23rd, 2001 12:24 PM
In reply to Cellar is leaking by TryingToHelpDad on January 23rd, 2001 12:49 AM [Go to top of thread]

It involves bringing in a backhoe and digging a trench along the basement wall all the way down to the foundation. Then he plastic drain tile/pipe is installed covered with cloth sock to keep the dirt out, backfilled for a ways with gravel and then finally back filled with dirt. Before backfilling would also be the time to add a water proofer/coating/membrane to the exterior wall as well as 2" or so of insulation board. Then a sump and pump are installed in the basement or outside in a well and tied to the drain. If inside then a hole is cut through the wall or foundation. Count on the backhoe and dirt and rock piles, etc. tearing up a good portion of the yard. Absolutely do waterproof and insulate the wall while it is dug out. While you are at it, the backhoe can put in proper slope in the yard for drainage away from the house to help keep water from settling around the foundation in the first place.

This is all academic if the water is coming up through the basement floor.

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