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I just received a final contract/spec from a builder for a small house in CT…2×4 exterior walls instead of 2×6…This passes local code, but is this practical for this region?
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How is he going to insulate? 2x6 walls are a result of codes written around the use of fiberglass batts. If the guy is going to use PUR, the walls will be R24.
-Rob
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The spec they wrote called for fiberglass with a vapor barrier...R13 maybe? I guess this would work with rigid poly sheets on the inside...I've always heard this was clumsy to drywall over.
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I just received a final contract/spec from a builder for a small house in CT...2x4 exterior walls instead of 2x6...This passes local code, but is this practical for this region?
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In new construction - fosam is better on the outside for a few reasons. Mainly - it keeps the cavity of the wall warmer and can be a drainage plain.
He would need 1 1/4" of EPS to be R-20 or 1" of polyiso to be R20.
I no longer consider fiberglass to be a proper insulation for houses. I realize this puts me in a small percentage of people called "kooks" but that is fine with me.
-Rob