Bathroom Insulation in Florida – Vapor Barrier Question
I’m doing a bathroom remodel due to some water damage from the old shower and wanted to know the best approach for my insulation since i’m in a warm and humid climate. The exterior wall previously had thin fiberglass between the furring strips and then a plastic vapor barrier and the ceiling just had old compressed blown in fiberglass.
For the walls I planned on using 1/2″ R3 foam board between the furring strips but do need to add the plastic afterwards? On the ceiling I was going to use R19 in between the 2×4 trusses and then R30 running the opposite direction on top, both unfaced and no added vapor barrier. I’ll have to secure them in place somehow before I put up the drywall because this is towards the end of the roof and there isn’t much room to work from the attic. Does this sound like a good plan?
Because it is a bathroom, I just want to make sure i’m doing it right so I don’t have any mold/moisture issues in the future. I did buy a quality High CFM Panasonic fan with timer switch so that should keep down the moisture from the shower.
Any input would be greatly appreciated.