Why I think spray foam insulation is overrated for most Edmonton homes
Last month during that cold snap, I had a guy from a spray foam crew come by to quote my attic. He was super confident claiming R-60 spray foam would pay for itself in 3 years. Except my buddy who works in building science ran the numbers and said for our climate with the freeze-thaw cycles, dense pack cellulose actually performs better long term and costs about $2,500 less for my 1500 sq ft house. I went with cellulose instead and after that -35 week, my heating bill was only $20 more than my neighbor's who has spray foam. Has anyone else found traditional insulation works just as good here?