r/Insulation•
astark25

Rim joist

New construction walkout finished basement. Should I use xps or eps with foil to insulate the rim joist. I am using eps with foil on the concrete walls and then framing and adding rock wool in the framing but am unsure about rim joist. Outside is house wrapped and vinyl siding

Posted Apr 6, 2026, 1:20 PM UTC

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