Thanks Bruce. I've decided to go with VB. What precipitated this was that my contractor went ahead and installed insulation and drywall without putting in the VP claiming I didn't need it if the garage was unheated. I've asked him to remove the drywall now and install 6 ml PVC vapor barrier...
Thanks. I'm leaning towards not using vapor barrier to allow the garage to breathe - but am concerned this will diminish the effectiveness of the insulation. I plan on having a small heat source in there 50% of the time.
I'm thinking of insulating my new garage which will only be heated some of the time. I live in a cold climate (Canada). Should I put 6 ml vapor barrier between the studs and the drywall? (drywall is required to meet building code for fire protection).
Will installing a vapor barrier cause...