Quote:
Originally Posted by Montana1
I currently have blown in cellulose but I recently discovered that there is no vapor barrier between the cellulose and ceiling drywall.
To improve the R-value should I install a vapor barrier or doesn't cellulose need a vapor barrier????
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Vapor barrier are not that common in the attic unless your in FL w/ high humidty
Mold / Mildew need a source of water to live. That is either condensation on a cold surface, or a leak. In our house, it was condensation on the walls that made mildew, and my wife and daughter are allergic. This is what lead us to foam the walls, the basement headers, and the eves (after I installed baffles, .5 inch by stud width) when we remod the exterior.
if your going to crawl around in your attic, your best bet is to seal it up from the interior of the house using great stuff foam, as posted earlier in the thread.