Serious moisture problem inside wall cavities
Hi, I am looking for a solution or cause for a problem a local(Columbia Gorge area, Oregon) contractor called me about today:
He said the house he is almost completed(dry-walled/painted, doing finish work on it now) has a serious problem the plumber discovered:
The guy was about to install cement board over the insulation so he can start tiling the new shower stall, he moved some of the insulation, discovered the back-side(against the exterior sheathing( note: exterior sheathing installed is called ZIP PANELS, which does not require house wrap!) was extremely wet!
Contractor started checking other exterior walls, finding the same problem. I asked him a few questions, like: What was the moisture content of the framing? Answered 12%; What about a vapor barrier? he said the dry waller applied it with the primer-sealer. What is the attic space like(referring to moisture)? He said it noticed it was dry, with exception to an area w-o venting, where the cavity did show signs of moisture.
House was framed during the winter. Shell was covered before the bad/cold weather hit.
Okay everyone, tell us whats wrong!!!!!! PLEASE! Contractor said he thinks he is going to have to strip the walls!