Wall assembly advice for climate zone 3A
Thank everyone for the amazing content on this site, it has been very helpful in making decisions for a new house build I have going. I am at a cross-roads on the exterior wall assembly, and I would like to get everyone’s advice;
Currently the walls are 2×6, with 5/8 plywood for sheathing, and an impermeable peel and stick WRB with the windows flashed to the WRB. The house is on a slab-on-grade foundation, and have a 6 1/2” brick ledge since the cladding will be stone up to a water table sill then Hardie Board panels for board and batten. My question is should I install exterior insulation, and if so what kind and depth, and should I be concerned about a drainage plane behind the insulation since the WRB is impermeable? Looking for the best design for longevity.
Thanks in advance!
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