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View Full Version : Can rigid foam be placed over the floor joists then the subfloor open crawlspace?


tntster
Jan 4, 2010, 05:55 PM
Is it possible in an open crawl space situation, dirt floor only 8/12 inches of clearance to put rigid foam board over the floor joists, just like a subfloor, then attach 3/4 inch plywood subfloor. My concern would be creating moisture on the floor joists

ballengerb1
Jan 4, 2010, 08:06 PM
Are you saying the joists are open right now with no sub floor at all?