When you are topping up your attic insulation, your objective is to improve the energy efficiency of your home by increasing the R-value of the attic insulation to reduce energy loss. One important consideration is what R-value is right for your home?
Why R-Values Matter?
R-values refer to the insulation’s ability to insulate the home and prevent energy loss. The higher the R-value, the better insulated the home is to reduce energy loss. Achieving the desired R-value in your attic requires understanding the differences between your existing attic insulation and the R-value you want to top it off to.
For 2021, there have been updates and changes to the insulation building codes for Ontario. For attic insulation, new homes will need to have a minimum of R-60 in attic insulation. If your home is older, and depending on when it was built, you could have R-10, R-20, or possibly a much lower R-value.
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