Moisture in wall assembly…
From doing a job recently (wiring) involving cutting into the sheetrock, I saw that there was moisture against the interior side of my plywood sheathing. This is a 36 year old post and beam house, owner built, using what was typical for the time, specifically, interior painted sheetrock, then 3.5 inch fiberglass either foil or kraft faced, plywood sheathing, tyvek wrap, then siding which in my case is cedar shingle. Perhaps the only non-convention is the use of rough cut lumber, so the 3.5″ of fiberglass is in a 4″ wall, but not sure if this would impact the situation.
This followed some very cold weather (we saw 15 below), but I have no reason to think this was a rare incident, as some mold was visible. However, it did not appear that the plywood was very far toward rotting. Not a great situation, – a bummer in fact, but in the grand scheme of things, not life and death!. What are my options?
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