What is the best way to insulate the exterior of an old house?
We live in central Alberta, Canada. Our house has R-12 insulation in the walls with vapor barrier.
I would like to add some sort of insulation on the outside and put on new siding. I would like some suggestions on what type of foam product is best, etc.
Posted Sep 13, 2011 10:01 PM ET
Edited Sep 14, 2011 8:05 AM ET
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