Editor’s Note: The manufacturer and distributor for the spray foam in this story had previously been cited NCFI and Polymaster, respectively. This was inaccurate and has since been revised. The spray foam used in the application, Insulthane 200, is manufactured by Elastochem Specialty Chemicals and distributed by Winroc.
Lethbridge, Alberta is located toward the western edge of the Canadian Prairies. While the city experiences relatively mild winters as a result of the warming Chinook winds swooping in from the nearby Canadian Rockies, temperatures nevertheless dip down into the single digits (Fahrenheit) on a regular basis during winter’s peak. Those winds also contribute to Lethbridge’s ranking among Canada’s windiest cities, especially during the winter. So, for Lethbridge’s residential and commercial buildings to regulate their temperatures efficiently in such a climate, it is crucial that these structures are both properly insulated and installed with an air barrier.