Question of the Day - #115 Larry’s favorite!

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Question of the Day - #115 Larry’s favorite!

Postby RDavidson » Mon Dec 22, 2014 9:24 am

We need to go back to Larry’s favorite topic and that is basement wall insulation. Minnesota Residential Energy Code section R402.2.8, last sentence, reads: Walls associated with unconditioned basements shall meet the requirements of this section unless the floor overhead is insulated in accordance with Section R402.1.1 and R402.1.7 and the following requirements… I think what this says is that basement walls for unconditioned basements must be insulated just like a conditioned basement, but not like an unconditioned crawl space. But, if the floor above the unconditioned basement is insulated, then I must insulate the basement walls in accordance with one of two sets of directions. If my floor is insulated, why would I need to insulate the basement walls of an unconditioned basement? If this part of the home were supported by wood columns, I wouldn’t have to insulate the columns?
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