Help with my walls, please
I have read and reread the info about exterior foam insulation and moisture issues. I really want to stop the thermal bridging of my 2×6 walls. I live in northern Utah, Zone 5, with an average winter temp of 29 degrees. My builder is calling for the following wall system: 1/2″ gypsum board, 2×6 studs with 5.5″ of open cell foam, 7/16″ osb sheathing, Tyvek wrap, 1.5″ XPS, 1″ airspace, and a brick veneer. I have calculated the sheathing temp at 37.2 and the dew point at 40. I’m hoping to get the most efficient 2×6 wall system possible without moisture problems, and without too much extra work for my mason (anchoring brick veneer through too many inches of foam. Thoughts? Thanks so much for the help!
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