Doubled-studded walls & cold sheathing in WA
I live in western Washington state and I am designing a house and would like to incorporate some energy efficiencies in the design. I am mostly sold on double-studded walls however I do have reservations about cold sheathing. My builder is new to double-studded walls but willing to give it a go, as a result I am learning as much as can to help ask and inform as we move forward.
Q: Is this approach sufficient to lower cold sheathing in my environment: 1.) have a rain-screen 2.) install a interior vapor barrier and make sure all the seams are taped well 3.) mechanical ventilation system and 4.) lots of caulking (electrical boxes, windows, top plate/bottom plate)
Q. How important is it to use plywood over OSB (trimming costs and I trying to decide if using OSB makes sense )
Any suggestions greatly appreciated. Thanks in advance
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