Insulated Double-Stud Wall Assembly vs. Exterior Insulation
Is there a consensus yet on double stud vs exterior insulation? I’d like to build at near passive house levels, R30-R40 effective wall r value. I was initially thinking a standard 2×6 wall, BIBS, Zip, and ~3” exterior insulation was the way to go, but I’m seeing how a double stud wall might be less overall work and cost when you factor in doing vertical siding, stone, stucco, etc as your facade. Can anyone chime in on overall cost of one vs the other?
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