Home Improvement Asked by Raz on July 15, 2021
I had a structural engineer come out today who said I’m borderline needing to stabilize my foundation. He said, if I can manage the water outside my house better, I would be very much likely to need foundation repair in the future. Since I have rocks along the foundation wall, he said it would make sense to put a plastic water barrier under that landscaping to divert water from seeping into the ground close to my foundation (on top of proper grading).
I went looking and finding plastic comes in different mil sizes which ranges drastically in price. Does anyone know what mil plastic I should use for a task of keeping water from seeping into the ground under my rock landscaping?
Since you must have moving water I would want to go with a 10 or 12 mil visqueen 12 mil is a bit more expensive but it holds up to soil movement better than thinner poly sheeting products. I use 10 mil visqueen on my French drains to prevent dirt from migrating as easily it should work similarly to prevent erosion at your foundation.
Answered by Ed Beal on July 15, 2021
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