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Old 05-28-2012, 11:57 PM   #1
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Sealing a Crawlspace


I recently got a quote of about $5500 to seal my crawlspace. I can come up with enough time to tackle this job myself. Just had a couple questions for everyone, how do you seal all the pieces of plastic or do you need too? Do I need to insualte the walls of the crawlspace (they are concrete blocs)? How do you seal it to the joist?

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Old 05-29-2012, 07:50 AM   #2
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Sealing a Crawlspace


tucker,

There are about a million and one threads on crawlspaces and additional resources online from buildingscience.com and other folks.

The short answers to your questions are:
- yes you need to seal the seams
- yes you need to insulate the wall (if you are converting to a conditioned crawl space)
- yes you need to seal the bands and many folks use a combination of rigid and spray foams.

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