Exterior Wall Insulation

By increasing your exterior wall insulation you will help minimize heat loss through your building envelope.


An R-value is the unit used to describe thermal resistance, or insulating property. The higher the R-Value, the more insulated your house is from energy loss. (RSI is the metric equivalent of R-value).

There are many different types of insulation available, and the best choice depends on several factors, including the space available, the ease of access and installation, and cost. To learn more about choosing the best insulation for your home, visit Natural Resources Canada's Keeping the Heat In page.