Changed my mind on spray foam after a garage reno in St. Albert

I used to think spray foam was always the right answer for insulation. Then I helped a buddy with his garage last March and the contractor talked me out of it. He showed me the numbers: fiberglass batts cost him $1,800 less and the garage only gets used for storage and a workbench. He also pointed out that spray foam can trap moisture if the vapor barrier isn't done right, and his crew sees that mistake all the time. I checked online and found a few city building code threads saying the same thing. Now I ask about the building's purpose before recommending anything. Has anyone else had a contractor push back on a product you assumed was superior? What convinced you to switch?

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ray_hernandez2mo ago

That's a solid reality check, right? Sometimes it takes another pair of eyes to realize the fancy stuff isn't always the best fit for the job. I've definitely been there, where you just assume the top tier option is the way to go until someone shows you the math and the common mistakes.

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