2x6 wall with spray foam and rigid foam
While searching the net for some ideas on building a warmer wall, I came across this design. Had originally planned to go with double 2x4 wall.
Can you see any problems with this kind of wall? I plan on using spruce clapboard, strapping for rainscreen and building wrap. All on 16 centers.
I know the foam spray is supposed to be airtight, but I’m not really 100% sure of that. So would it be a good idea or just a waste of money to add some sheets of plywood on the inner side of the 2 inch foam board to make an airtight unit?
I live in Newfoundland where a lot of poly is used for vapor but I don’t want to use that but was thinking of one of those smart retarders. Is that also a waste of money?
Also, what do you think of DuPont Flex Wrap on plywood for air sealing? Any advice is welcome.
Posted Mon, 08/19/2013 - 06:58
Edited Mon, 08/19/2013 - 09:34
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