Double-Stud Wall, Sheathing Moisture, and Negative Air Pressure
I’ve been reading a bunch about moisture and sheathing, mainly when studies reference injecting air into an insulating wall and measuring the moisture increase above recommended levels. I’ve also read about rusting door latch mechanisms in one specific instance where the HRV was adjusted to maintain a positive pressure.
Would it not make sense in the double stud walled houses to maintain a slight negative pressure in the house so the moist air doesn’t have a chance to get into the walls? A double stud wall should be well air sealed enough to warrant an ERV/HRV anyways so lets assume the house has that technology installed.
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