Will I have humidity issues with a closed cell retro?
I am considering removing all of my batting insulation and having my attic spray foamed. My second story is unfinished, meaning it has no drywall yet. So, that is a plus for this installation. My question is, if I have 6" of open cell foam put at the roof line and SEAL the attic, will I end up with moisture issues in the attic??? I live near Houston, so its humid. The installers I have spoken with insist that there is enough air transfer through drywall and the relatively few can lights to alleviate the potential issue. Also, my AC probably has a little leakage into the attic. However, I don't like the way that sounds...I don't think drywall has enough air permeability to solve the problem and I don't want to depend on an AC system that is insulated and covered with mastic at all the joints to 'leak' enough to solve the problem.
Is what they told me correct? If not, what is the solution to keeping the attic humidity down?
Posted Aug 13, 2012 1:43 PM ET
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