Do I need to insulate a basement wall next to a crawl space?
If the crawl space is heated and insulted then no, if it is a cold non heated crawl space, then yes.
Ron,
As David suggested. I believe you're asking because it is cold. Or the cost of insulation, you would gain some peace of mind plus some added warmth.
Yes, if that wall is exposed to the outside air through the crawl space.
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