What is the best insulation for increasing the R-value in my attic in Ontario?
Most insulation products when installed correctly should reduce the rate of heat transfer. Products like Insulthane Extreme or foam board insulation; closed cell insulation have a better ability to resist air flow. When air and moisture flow through insulation the R-Value is reduced significantly. Reducing air movement through the insulation will increase energy saving dramatically. When increasing the R-value of your home incorporate spray foam to obtain best results.