Vapor Barrier for Cathedral Ceiling
In my pretty good house renovation I have cathedral ceilings in two rooms. Starting at the roof, the layers are as follows:
1) Steel roofing material
2) Furring Strips
3) moisture barrier
5) Roof framing
6) ~16″ air gap
7) 7″ Polyiso foam
9) R23 Mineral Wool batt style insulation
10) vapor barrier???
11) planned knotty pine T&G ceiling
My question is what is the most appropriate material to place between the T&G ceiling and the mineral wool, given that the T&G will be very permeable.
The house is located in Central NY, Zone 5 and sees summer temperatures in the 90’s and winters down to 0 F.
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