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Old 02-27-2012, 11:24 AM   #1
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how to attach vapor barrier to crawl space wall


I am looking for suggestions of what kind of sealent or caulk to use I see alot of websites saying furring strips but I dont really want to do that

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Old 02-27-2012, 12:02 PM   #2
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how to attach vapor barrier to crawl space wall


http://www.crawlspacedehumidifiers.c...ur-crawlspace/

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Old 02-27-2012, 02:57 PM   #3
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how to attach vapor barrier to crawl space wall


That really did not awnser the question anyone else know od a product that will stick to both poly and concrete block?
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Old 02-27-2012, 03:17 PM   #4
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how to attach vapor barrier to crawl space wall


if you click on the "click to zoom circle it shows the vapor barrier being stuck to the block with construction adhesive.

http://www.crawlspacedehumidifiers.c...ectionview.gif
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Old 03-03-2012, 09:20 AM   #5
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how to attach vapor barrier to crawl space wall


Polyurethane Caulk is what I've seen. I don't have a specific brand to recommend.
Honestly, find some places online that sell items for crawl spaces like crawlspacevaporbarrier.net, and look at what they sell for attaching poly to walls.
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Old 03-03-2012, 01:05 PM   #6
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how to attach vapor barrier to crawl space wall


accoustical sealant is the correct caulking to use..

its the industry standard expected by inspectors and about 1/2 the price of a tube of construction adhesive

Last edited by woodworkbykirk; 03-03-2012 at 01:08 PM.
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Old 03-03-2012, 01:53 PM   #7
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how to attach vapor barrier to crawl space wall


Quote:
Originally Posted by woodworkbykirk View Post
accoustical sealant...
Tremco brand is popular here. Some folks refer to it as "black death" because it sticks to anything, including you. I stuck together some visqueen and pulled it apart over a year later; very hard to pull it apart, and the caulk seemed to shear more than it lost its grip on the poly.
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Old 03-03-2012, 01:59 PM   #8
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how to attach vapor barrier to crawl space wall


Vapor barriers are installed on crawlspace floors to reduce water vapor from migrating from the earthen floor into the crawlspace.

Rigid insulation is normally installed on the interior face of the crawlspace walls to reduce heat loss.

The surface area of the crawlspace walls is small compared to the area of the floor, so the floor is where you get the most effective use of the vapor barrier. And the amount of water vapor coming through the ground is larger than that which migrates through the crawlspace wall.

That being said, if I were going to install a poly-vinyl vapor barrier on my crawlspace wall, I would use stainless steel staples and staple it to the wood plate on the top of the crawlspace wall and let the free end extend to the crawlspace floor and extend inward on the ground for a foot.

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