No ceiling/roof penetrations, can I vent out side walls?
Zone 7, 10k in Colorado Rockies, 150sqf snow load. Standing seam roof. Due to problems air sealing and snow/ice pressure, I would like to eliminate all ceiling and roof penetrations on my new build. All electric appliances + heat pump. Only vents necessary are plumbing and HRV. I’ve heard mixed feelings if this allowed or not. Advise is appreciated.
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