Insulate crawl space floor?
We are building a single story home in zone 6B (West Central mountains of Idaho) and the framers are scheduled to arrive Monday 9/14. We are using a sealed, conditioned crawl space, but I haven’t seen any details that included insulating the floor of the crawl (bare dirt in this case). Our stem walls (30″ tall on top of 10″ tall footings) and rim joists will be insulated, likely with spray closed cell foam. One of the framers I interviewed thought I should really consider insulating the floor as well, as the ground temperature will be stealing heat from the home.
Is there any info anyone might point me to to help me decide if this would be worth the money, time, and effort? Your help and input is appreciated.
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