Ceiling wallboard with vapor barrier?
I removed some ceiling wallboard (to do some structural repair work) and now itÂs time to put up the new wallboard.
The ceiling wallboard on my house has aluminum foil on one side. Is this a vapor barrier? Assuming it is, do I need this vapor barrier on the ceiling? I cannot find any wallboard at LoweÂs or Home Depot that has a vapor barrier on it.
P.S. I have R-11 old fiberglass matts in the attic. I'm planning to add some more matts or cellulose.