Moving forward after finding moisture (and the beginning of mold) in new construction wall cavities
I'm looking for advice (and a little comfort) for the following situation:
We are in the process of building our own home... slowly.
Our exterior wall as designed is as follows:
2" foil faced polyisocyanurate insulation (taped joints)
1/2" plywood sheathing (taped joints) (dedicated air barrier)
2x6 stud walls with Roxul batts
1/2" gyp bd, painted
We have all of the ductwork in place for an HRV, but it is not yet installed.
We have been cooking in the house but running a dedicated range exhaust when we cook. We do not shower or sleep in the house. Our temperature and humidity ranges between 61 and 70 degrees, and 40%-46% humidity.
Now here's the problem: We have been slowly picking away at installing the roxul and drywall, and had various stages of completeness throughout. None of it was to the point of paint. We recently went to move a section of the roxul in an open cavity and it was soaking wet and beginning to mold behind it. In the end we removed every piece of drywall and insulation on the entire second floor. Cavities were all a variety of moistness, with the worst have the beginning of mold spots forming. The south side near the wood stove chimney was the best case, the North side on the lower part of the wall was the worst case.
We sprayed and scrubbed the cavities with Borax and plan to leave the cavities open for at least a week. We have upped the temperature to stay nearer to 68-72 and have been exhausting the house to get the humidity down closer to 35%.
SO, (2) questions:
1. Are we approaching the remidiation the right way?
2. Do we have a wall that is destined to fail?
Any input is appreciated,
Posted Fri, 03/07/2014 - 10:46
Edited Fri, 03/07/2014 - 11:01
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