What do you recommend for a crawl space vapor barrier?
user-1145893 | Posted in Green Products and Materials on
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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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.