Rigid foam board in Newfoundland
I live just outside St. Johns Newfoundland and will be building a new house this coming spring. I will be using 2x6 for framing. In the cavities I will install Roxul R -24. ½ spruce plywood covered by building wrap. Next I plan on installing 2 inches of Owens Corning ridged foam, tape seams. Next 1x4 strapping, rainscreen on 16 centers for attaching 6 inch spruce clapboard. My question is 2 inches enough to keep the wall warm where I live. Average winter temperature is 0C but it can get colder. Also can be quite damp with horizontal rain due to high winds.
Posted Jan 12, 2013 7:39 AM ET
Edited Jan 12, 2013 1:40 PM ET
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