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Traveling_Carpenter t1_j5wngkr wrote

Reply to comment by ThinkSharp in Insulating crawl space with sub-grade walls, or spray insulate floors? by ThinkSharp

You have a couple prescriptive options available in the model code if you go the path of insulating the walls, which is a good choice. Look at R408.3 in the International Residential Code - it spells it out pretty clearly. For a more plain-language perspective explanation, I’d check out the Fine Homebuilding article “crawlspaces that work.” Code available here: https://codes.iccsafe.org/content/IRC2021P1/chapter-4-foundations

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ThinkSharp OP t1_j5yc4jq wrote

Thank you, I’ll read each. That’s helpful because I don’t know where this stuff is already studied and prescribed so this is super helpful. No sense recreating the wheel

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