I hope I can explain my question thoroughly. I am in the process of finishing 1,200 sq. ft of my poured concrete basement. I have had the envelope of the house sprayed with 2" of closed cell foam including the 400 sq. foot crawl space. They also completely foamed the walls except for each side of the wall between the space I am finishing and the crawl space. I was told this was because it brought the crawl space into the envelope. There is an 2x4 foot opening between the two. Crawl space is under the 400 sq. foot addition of the master bedroom and bath. The crawl space is 4' with a dirt floor. This leaves 5 feet of the poured wall on the finished side bellow grade without foam as well as the 4 feet above grade on the crawl space side. I am framing the wall and wondering if I need a vapor barrier here. I was not going to use insulation because this is not really an outside wall but am concerned about condensation. I did use DensArmour Plus drywall on the bottom half and Green board on top of Dricore floor. I tend to overkill for just in case situations. Basement is dry but do not like to take chances.:thumbsup: I have looked at many sights and read the building science info but I do not see this issue addressed anywhere. Any info or experiences will be greatly appreciated.