Mineral wool and vapor barrier in zone 4A home?
I really appreciate this community and everyone’s patience helping me better understand our best approach with this new home. I hope this doesn’t sound too dumb, but I feel compelled to “make sure” I don’t end up with a serious uh-oh-oh. I’m at the bottom of the 4A climate zone in Tennessee next to the Alabama/Georgia intersection. We are considering using mineral wool in this new home and typically, we don’t worry with vapor barriers here. However, as I was reading an article in GBA (link below), the vapor barrier was mentioned several times for the cooling season. If I install mineral wool in this climate zone, is a vapor barrier necessary?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part