R-Value Insulation Guide for Canadian Homes (2026): What R-Value Do You Really Need?
A homeowner in the GTA calls three contractors about attic insulation. One says “You need R-60.” Another says “R-50 is plenty for your house.” A third pushes spray foam as the only real solution. None of them have looked at the existing insulation depth, air leakage, rim joists, or the home’s heating system. The homeowner […]