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Old 02-02-2012, 11:23 AM   #1
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Basement waterproofing

I'm remodeling the basement in my house thats 40 years old. I've gutted the entire room down to the block. The walls are damp in some places and theres definate signs of moisture damage in the old framing that I removed. I been here 4 years and have never had signifigant water in the basement. I plan to waterproof the walls with Drylok waterproofer and then cover the walls with 1" polystyrene insulation sheating and then frame about 2" out from the block walls. Is it best to do it this way or should I just cover and seal the walls with the Poly sheating? Will the waterproofing be twice the work and exspence?


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Old 02-02-2012, 11:40 AM   #2
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Why are the walls damp?

I believe the issue you have is outside the house. Do you have proper drainage and grading?



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Old 02-02-2012, 11:43 AM   #3
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Not the best plan, that moisture issue needs to be addressed from the outside before anything inside gets done.
Dri-Loc is not going to do it.
Regrading landscaping, french drain, working gutters, water proofing the outside walls with foundation sealer.
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Old 02-04-2012, 03:23 PM   #4
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Waterproofing is best done on the exterior. No dryloc, it just directs the water to an easier entry point, like at the slab/wall joint. Better to let the moisture vapor, not liquid water, diffuse through the wall unblocked. The foamboard will slowly allow passage to dry to the basement. 1" may not be enough for your locatin....

1. Where are you located?

2. The 2" gap is not recommended;

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