MOST efficient wall construction for cold climate?
Im a contractor currently designing my own dream house in Quebec. The idea is that the home will eventually be Net Zero, which means I’d like the house to be as energy efficient as possible.
so is there a consensus? my insulation guy is telling me that the best is a 2×4 construction with horizontal 2×3’s on edge, filled with 5″ of urethane. (VERY little thermal bridge, super tight, etc)… any thoughts please?
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