I am considering adding a slightly modified exterior insulation detail my build coming up. Instead of using Rockwool comfort-board 80 3”, I am considering this assembly from the interior to exterior .1/2” drywall, intello membrane, r22 insulation, 2×6 -24” o/c, plywood , tyvec (wrb/air barrier), 2×4 24”o/c horizontal strapping, r14 rockwool, 1×4 vertical strapping then siding. This only amounts a to about .004% thermal bridge if you don’t strap over bottom and top plates, the cost is less than using comfortboard and you don’t have to mess around trying to get a straight wall. My concern is, am I blocking drying possibilities by cross strapping? I am interested in comments. climate zone 5 in BC. Thank you.
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