04:18AM | 03/29/04
Member Since: 03/20/04
3 lifetime posts
When it rains I have water under one side of my house. Because the lot slopes it all ends up on one side. I think this is due to the septic drain field in the back yard being higher than the lowest point under the house. The drain field is far enough away that there is no oder problem but the water could cause other problems. I can put a french drain at the lowest point under the house but will this realy correct the problem? If this will work, how deep should I dig? I can dig to a level even with or below the footer if this is needed. Will I have footer or foundation problems later? I don't have a basement but the crawl space on the side where the water stays is about 5 ft. so I have room to dig if needed. Thanks for your help on this.

Glenn Good

08:38AM | 04/05/04
Member Since: 09/10/03
314 lifetime posts
The better solution is to keep the water from getting into the crawl space to begin with.

Installing a French drain at a level slightly below the top of your footings around the outside of the house should keep the water from entering. Run the drain tile into a dry well or open it to an area where the grade is lower than the foundation and sloping away from the house.

While you have the area opened and before installing the drain tile you should also apply waterproofing to the top of the footing and the wall where it is below grade. An asphalt coating troweled on and covered with 6-mil polyethylene should do the job inexpensively.

When you backfill make sure the grade slopes away from the house for at least 6’ on all sides.

In addition installing gutters and downspouts will be a big help if none are present. Have the downspouts discharge the water at least 6’ out from the house if possible or use splash blocks to direct the water.

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