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Old 11-29-2007, 08:15 PM   #16
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insulating under first floor


Two inches of 2 lb. rigid spray foam costs about $2.00 a square foot around here.

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Old 11-29-2007, 09:08 PM   #17
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insulating under first floor


Are there applications I can purchase, or does a contractor have to come in for the foam cinder-block insulation?
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Old 11-30-2007, 09:32 AM   #18
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insulating under first floor


I don't see why you couldn't DIY the rigid board to the cinder block. Wouldn't it just take some construction adhesive?
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Old 11-30-2007, 10:03 AM   #19
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insulating under first floor


I agree, the insulated boards are a far better choice. Attaching with construction adhesive though worry's me a bit since I won't be able to go back in a year and check to see if I thwarted the water problem from the outside. Knock on wood, I have by redirecting the gutters and adding additional length to the spouts so hopefully that won't be an issue. Ahhh the joys of homeownership!
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Old 11-30-2007, 10:09 AM   #20
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insulating under first floor


theoretically, if you use foam board and seal it properly, even if mold gets between the board and the blocks it shouldn't effect the living area... yes/no? In my case, I really don't care if it does; army crawling around in my crawl space is nothing I do more than when absolutely necessary!

Ok, I guess I'm going the foam board route.

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