Exterior renovation and additional insulation
Am re-siding my carriage home/wood shop after a brutal wind and hail storm did my pine board and batten siding in last summer. Planning on taping osb seams and adding eps foam or roxul. The conventional 2×6 walls have a 6 mil vapour barrier, from what I’m reading it seems like any osb sheathed wall should use a smart vapour barrier, especially since I’m taping seams. I don’t plan on removing drywall to change the vapour barrier. What are my options? Will the roxul offer enough permeability, or will the osb that trap moisture in the wall. Heat source is electric boiler supplemented with wood heat, and plans of adding a solar thermal system, so I’d like to get the building as efficient as possible without tearing out the drywall to replace vapour barrier.
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