How much insulation should I have on the walls of my basement?
Current codes in southern Ontario for basements are R12-R20 depending on what SB12 package you are using for a new home. If it’s a retro fit we typically recommend R20 of spray foam insulation. Remember when building a new home to use Insta-Panels to insulate the area below your concrete slab. Insulating the ground stops heat loss into the ground and leaves the heat in your basement working its way up making the house warmer.