How long can the air tightness of construction be maintained?
I’m fascinated by passive construction, however I have a nagging concern about it’s durability. I keep seeing “insulation last better than PV”. That’s great, but the insulation doesn’t matter once the air tightness is lost. Due to the the extreme air tightness built deep into the construction, how can simple things like caulking and other decomposing materials be replenished? After 30 years are you left without an airtight house and no heating/cooling system?
GBA Detail Library
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