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Question DetailsAsked on 9/27/2017

How do I prevent water from coming into the middle of my bedrooms floor foundation?

I notice that my carpet is wet during and after a heavy rain. I pulled the carpet back and i see a hairline crack where the carpet get wet. The walls and windows are dry, a little bit of the tack strip is wet in the middle. I have a sewer drain just about in the same area, but it does not appear to be leaking. I went outside and checked my water meter to see if water was running and it was not turning. When it rains the area near my front door next to this area fills up with water. I'm thinking the water is going underneath the foundations here and traveling about 2' to the crack. It only happens with heavy rain (hurricane Matthew and Irma)

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1 Answer


Here are links to a couple of similar previous questions with answers - and one of them has more links to other similar questions.

But in your case, sounds like you probably diagnosed it already - if water is pooling along the foundation or edge of the slab, then it can certainly run in under and pop up through any crack - or generally dampen the slab over a large area. Get rid of that ponding by use of gutters and downspouts leading the roof runoff well away from the house, or get rid of direct rain ponding by ensuring the ground with a couple to few feet of the foundation slopes well away from the house (at least 1/4" per foot slope, preferably more like an inch per foot for rapid runoff) and is at leat slightly clayey or silty at the top inch or two and compacted so it does not infiltrate well.

Be sure to leave about 4 inches clear from dirt to top of foundation/bottom of siding to keep the wall dry and relatively insect free - more like 8-12 inches clear foundation is recommended in termite or serious carpenter ant/post beetle country.

Answered 3 years ago by LCD

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