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joshm 03-25-2008 09:19 AM

backfill question.
We have been water coming into our basement during heavy rains along one wall only. I think it maybe related to poor grading away from this wall as the ground is flat or slightly towards the house. Planning on trying backfill first. Here was my plan. I plan to put down heavy landscaping plastic or the like up the wall 6 inches and curve and run it out on the ground about 10 feet. I then plan to put about 12 inches of mostly clay backfill along the wall and slope this out over the 10 feet until it is level with the rest of the ground. Is 12 inches over 10 feet adequate? How about putting the plastic against the wall and under the dirt? I know I have read about people putting gravel over plastic but is it ok with dirt? I was thinking it would keep water from getting through to the basement wall and we would still be able to plant some small root flowers since there would be 8-12 inches of dirt near the house about the plastic. what do you think?

Bill46 03-25-2008 10:41 AM

12 inches over 10 feet should be more than adequate. I don't think I'd use any plastic or other fabric, just the clay soil. I've had the same problem. House is almost 2 years old and the backfill continues to settle. Have re-graded the area twice and it looks like maybe (hopefully) once more when the snow melts (NE Ohio)

Bill46 03-25-2008 10:44 AM

Also, have you checked your gutters and downspouts to make sure they're clear?

joshm 03-25-2008 11:07 AM

yep we are good as far as gutters and downspouts go.

HandyPete 03-25-2008 04:46 PM

No plastic for me! It won't stay put no matter how hard you try. Go with the backfill and keep a sharp eye on the grade.

- pete

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