Best choices for vapor barrier for a 1930s built home with dirt floor and partial full height crawl space?
Greenconfusion
| Posted in General Questions on
Looking for best vendor for 10 mil poly ? Also has anyone ever laid down tile backer board as partial rat slab ? The poly alone is going to be a PITA . The house has stacked stone piers with some cmu block. When crawl spaces are difficult like this one , is power venting an option ? I want to keep it sealed , also there is no A/C ducts in crawl space. The project is Zone 5 Western NC.
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Green Confusion,
First of all, I suggest that you read this article: Building an Unvented Crawl Space.
One brand of tough polyethylene used for crawl space floors is Tu-Tuf. Here is a link:
Tu-Tuf polyethylene.
You mention "power venting." If you install an exhaust fan, make sure (a) that the fan is not oversized (you want a fan rated at 1 cfm per 50 sq. ft. of crawl space); and (b) that you include a passive source of makeup air from the house above (usually by means of a floor grate). For more information, see the article I linked to in the first sentence of this reply.