jonkayak
Senior Member
I think that blue board will give you issues. The main one being it will effect your door and window openings. Instead spend the money on a quality house wrap. Not all house wraps are equal. A high quality wrap w/taped seams and properly installed will offer better protection then blue board. Also with spray foam I just can't see it being anything but a head ach and total waste of good money. One thing to do inside is to caulk all seems and joints in the framing. Like where the bottom plate meets the flooring and around corners, headers, ext.... If you have you a good insulator then they should take care of it.