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What do you recommend for a crawl space vapor barrier?

K Greenblott| Posted inGreen Products and MaterialsonOctober 11, 2012 03:15am

Its surrounded by frost wall. Wood floor system 2′ above. Will 6mil plastic do? How about fastening / sealing to concrete frost wall?

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GBA Editor

Martin Holladay|Oct 11, 2012 03:56pm|#1

K. Greenblott,
You can use 6-mil poly, although a product like Tu-Tuf or even a 20-mil swimming pool liner will be tougher (which might matter if people visit the crawl space often).

More information here:Building an Unvented Crawl Space.

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