What R value insulation is required for rim joist in Ontario? Was going to use Roxul and vapour barrier.
Thx
It's the exact same as the walls; R20.
Cheers,
Tim
When you say same as walls, are you saying some as aboveground walls or same as basement walls?
In Ontario there is no difference between above or below grade insulation requirements for walls. R20 is what is required.
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