Quote:
Originally Posted by naptown CR
This would be a vermin barrier not underpinning which refers to the support of foundations. And it is not a vapor barrier as it would be on the wrong side of the insulation and cause condensation in the insulation and reduce it's efficiency and create possible rot problems.
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Just like the studs in the walls will rot under the same conditions, right?
Most of the trailers I have had to crawl under in my lifetime were underpinned with 8-10 mil poly, sealed at the seams. Then skirting installed without any vents.
Condensation is going to depend on the dew point on the interior side of the plastic.