Conditioned or not? What’s the best way to insulate a 1950s home’s crawl space?
We have a 1950s home with a small basement and the rest crawl space in Zone 4A. I need to figure out the best way to insulate the crawl space and maybe the basement. The house is heated with propane and cooled with central AC. The walls are block in both spaces. There are no mechanical systems or ducts in the crawl space. The sewer, water and pipes from the propane boiler run through the crawl space. Currently the crawl space is vented, uninsulated and has no vapor barrier.
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