Potential Issues Due to Air Gap
Hi, if I fill 2×4 attic wall studs with 3 inch of closed cell spray foam and then install 1 inch of continuous super tuff-R rigid foam across the studs to address thermal bridging, will the 1/2in air gap between the closed cell and rigid foam lead to any moisture issues?
Also would the rigid foam create a double vapor barrier here with the closed cell? The contractor said it would not. Im in NY, zone 5.
Thank you for your help!
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