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Author Topic: wet floor and leaks between block foundation  (Read 5410 times)
Gus
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« on: October 24, 2009, 05:15:27 PM »

Good afternoon, I have come across your method of fixing water issues in crawl spaces and am very interested in the idea. I have a block wall foundation in my crawl space and because of the amount of water that flows down my back hill towards my house if created a water issue ONLY in the  winter when the ground is frozen and we have a big rain and the water doesn’t get absorbed. My crawl space is block wall but the floor that was poured is only a skim coat (1963 construction) and it seams that the floor is always damp under something you place on the floor. My skim coat floor about 1 inch was poured even with the footing instead of pouring it on top. With your method do you use the black outside dimpled wall backfill protection roll sheeting on the inside walls and what would you do to stop the floor from being damp, would you have to pour another concrete slab over the skim coat? I think I will still have a damp floor because there is no insulating factor in the floor?

 

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Rod Johnson
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« Reply #1 on: October 26, 2009, 08:58:34 AM »

Darrin:
You would need to first drill the bottom of each block and block joint with a 3/8” diam. hole, then line the entire floor and up the walls 1.5 blocks high with the dimpled air gap membrane. There needs to be a standard sump system installed and then 2.5 – 3” of new 25mpa concrete poured over the membrane. This system has always worked very well in the circumstances you have described.
If you provide some pictures and dimensions I can give a budget quote.
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