What is the R-value required in Ontario?
What is the R-value required in Ontario? Generally speaking, a higher R-value means better insulating properties. The recommended R-value for attic insulation in Ontario is between R-50 and R-60. What is minimum wall insulation? The National Building Code -Alberta Edition requires an R-value of R22 (RSI 3.08) for all above ground framed walls. Your choice […]