Would 2×8 studs filled with dense-packed cellulose and 2 in. rigid foam over the sheathing work in Zone 5?
I’m located in climate zone 5 (Portland, Maine).
The 4 inches of foam that people seem to like over 2x6s seems quite a bit more troublesome from a detail point of view. Sure, 2x8s would cost more, but cellulose is a lot cheaper and more environmentally friendly than foam.
In a related question, what about solid wood sheathing, which is more environmentally friendly than OSB or plywood? Could one get it tight enough with taped housewrap?
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