Insulating exterior wall and vapor barrier question?
I have the drywall torn out of my bathroom and am using the opportunity to re insulate and want to make sure I do this right.
I have 2x4 walls, and was going to get the highest r value paper faced (unfaced?) insulation I can find and place it in the stud bays paper facing in and stapled to the studs. I was then going to lay plastic vapor barrier over the inside walls before putting up the drywall.
if your going to put in plastic then you don't need faced. facing is a vapor barrier. make sure the plastic is 6mil
try to tie the plastic in with the other walls and floor if possible, you will notice a huge difference with it up as well, I gained a 10 degree steady temp from doing my bathroom walls.