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Old 02-07-2012, 07:26 PM   #1
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basement floor


I am planning to finish my basement. I live on the south shore long island, with a high water table. House is a 1930 cinder block foundation. There is no flooding, but is definitely damp. I get mold if cardboard is against the wall or floor.

I am going to have the walls and rim joist sprayed with 2" of foam.

What about the floor? I only have a 6 1/2' ceiling height, and rather not spend the money for foam board and plywood.

Also, if i don't insulate the floor what will prevent mold from growing on the sheetrock walls from the ground up?

Any info would be greatly appreciated.
Thanks

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Old 02-07-2012, 07:44 PM   #2
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And why are you going to try and finish this floor?
May want to check into what it's going to cost before making plans to finish it.
Not a diy job if the plan is to have it come out level and flat.
The slab will have to be about 4" thick so your only going to have about 6' of room left.
There's no room to install a door, can not be concidered a room when it's sold.
For any hope of this plan working out you need to do a whole lot of work outside before doing anything inside.
Water proofing the foundation, french drain, making sure there's working gutters, no mulch piled up againt the foundation, grade sloping away from the foundation.

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Old 02-07-2012, 08:07 PM   #3
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The floor is a concrete slab, fairly level... plan on carpeting. The gutters are fine. I have good sloping away from the foundation. Not interested in resale value, only additional space for kids and their friends.
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Old 02-07-2012, 08:12 PM   #4
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No flooring or wall covering will work until you get the moisture under control.
Most of water control is done outside not inside.
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Old 02-07-2012, 08:17 PM   #5
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so the claim from the insulators that the 2" closed spray foam will produce a moisture barrier is false?
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Old 02-07-2012, 08:24 PM   #6
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Quote:
Originally Posted by sharp View Post
so the claim from the insulators that the 2" closed spray foam will produce a moisture barrier is false?
Yes....
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Old 02-11-2012, 12:06 AM   #7
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Why do all your replies sound like an ad?


There was spam that has been removed.
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Old 02-11-2012, 04:46 AM   #8
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Quote:
Originally Posted by rusty baker View Post
Yes....
2lb spray foam is a air barrier at 1" thick and a vapor retarder at 2"thick.

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Last edited by DangerMouse; 02-11-2012 at 02:33 PM.
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