What is the best way to insulate a crawlspace to keep humidity down and stop odors?
I have a crawlspace with 4' concrete walls and a cement floor, insulation between the floor joists and has 3 - vents to the outside. I am thinking of 1" foam boards on the walls, sealing the floor. There is no moisture only when I put a piece of plastic down. Just want to warm it up a little and keep away any smell. ...