Fishy1911 t1_iybgh5q wrote
Reply to comment by deeptroller in I cannot find a straight answer anywhere: Do I need a vapor Barrier if I’m using rock wool insulation in North Alabama? by RedBeard972
Warm side of the insulation is what the ABAA typically says.
That being said, we do a lot of vapor permeable on exterior sheathing prior to facade installation in colder climates. It really depends on where your dew point lands in your wall assembly. Which is way above my pay grade.
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