Conditioned crawl insulation–best way to apply?
We are building a new home in NW Oregon (zone 4C) and I am planning a conditioned crawl. The design is based on a lot of reading here and elsewhere, hopefully it makes sense. We have carefully graded the crawl floor to a lowpoint drain and covered the floor with 2 inches of fine gravel. The vapor barrier (Moistop Ultra 6) will extend over the top of the stem wall and capillary barrier to be sandwiched by the mudsill. All the seams will be 6 inch minimum overlap and taped. I am installing 3 inch polyiso foam (R20) on the interior of the foundation wall, over the vapor barrier. One question i haveis the best way to attach the foam. Adhesive is out with the vapor barrier between the wall and foam. Is it possible to put the foam under the vapor barrier? I am also applying a damp proofing on the outside of the foundation (asphaltic emulsion).
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