Air Barrier Location
I’m in the process of beginning our new home in the next few weeks. We’re located up in Newfoundland, Canada, just around St. John’s. We’re planning on incorporating a double stud wall to increase the R-value of the home. The plan is, from outside to in, : R8 Comfortboard, Tyvek, Plywood,, 2×6 wall with fiberglass batt, 6mm poly, and 2×4 wall with fiberglass batt which will contain all of the electrical and plumbing.
Since the 6mm poly will be the main air barrier in the home, If I were to insulate the 2×4 wall on the inside of the air barrier, am I creating a high potential for moisture to come into contact with the fiberglass batt and is it worth the risk? Or am I better off just leaving it without insulation to increase the durability of the wall?