KEEPING THE HEAT IN YOUR HOME:

"NATURAL RESOURCES CANADA: Chapter 6: Basement Insulation

Uninsulated basements walls can account for approximately 20 percent of a home’s total heat loss. This is due to the large, uninsulated surface area both above and below grade level. Contrary to popular opinion, the earth is a poor insulator. 

Many basements have little or no insulation, this means there is much potential for improvement. Insulating basements walls can often be tied in with other repairs or renovation work such as waterproofing or finishing the basement." ^

For more information please refer to: ^ Referen​ce