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Old 10-07-2010, 08:56 AM   #1
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Insulating crawl space

We are converting our seasonal cabin to a year round. At least we want to be able to use it in the winter when we can. The crawl space is not insulated. We'll be putting down poly on the dirt floor, and insulating the walls. They currently have 1"pink foam insulation between the studs.

It's a small space. 20' X 22' total. 2' high on one end sloping to 4' on the other. Our plumbing is down there. Plan on putting a heater down there, as well as a dehumidifier. We will drain the water when we won't be there for a few weeks between visits.

For a space like this how much insulation should I put in the short walls? They're just 2 X 4 walls.


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Old 10-07-2010, 10:28 AM   #2
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I'd fill them with foamboard, maybe a layer on top of the studs. But if you use any foam product, you need to sheetrock over the top so the foam is covered.


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Old 10-07-2010, 03:32 PM   #3
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"For a space like this how much insulation should I put in the short walls?" ----- there is a cost/R-value with insulation:

If you go to a "closed" crawl, check with your local B.D. for radon and air exchange requirements:

If in a cold climate:

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