• jimbolauski@lemmy.world
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    1 year ago

    You can back out R values based on insulation thickness, that table may be old… It didn’t have a date on it.

    The values you provided equate to freedom R values of R40.5, R28, and R22.5 for the roof, walls, and floor. Those are inline or behind the US minimum requirements R60, R30, R20.