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The CleanBC Better Homes and Home Renovation Rebate Program terms and conditions state that batts, loose fill, board and spray foam are eligible insulation types. Only products with Canadian R-values provided by the manufacturer are accepted. “System values” or values of materials not tested to Canadian national thermal insulation standards cannot be used for determining the amount of insulation added.

However, your contractor may install insulation that is foil backed. The insulating value of this is obtained by adding the thermal resistance value (R-value) of the insulation to the R-value of the foil insulation. If the R-value of the insulation (excluding the foil) meet the minimum requirements of the rebate program, it will be eligible and you can count it towards the insulation rebate.

Foil insulation is essentially a plastic bubble wrap sheet with a reflective foil layer, belonging to a class of products known as radiant foils. In Canada, these types of insulation often have R-values of R0 to R3.5. If there is no air space or clear bubble layer the R-value is R-0. Keeping the performance attribute of foil insulation in mind when planning insulation upgrades is important to ensure your upgrade maximizes its performance and effectiveness. For more information on the different types of insulation, visit the Natural Resources Canada resource, Keeping The Heat In.

Did you see a building science or energy efficiency term you did not understand? Check out our glossary.