Zone 7B Thermal Requirements
The climate zones are under the jurisdiction of provincial governments and may differ from those in the national model codes. When the harmonized system of the Canadian Model Building Code is adopted, provincial governments may choose to adopt or adapt the climate zones.
Thermal Requirements for Climate Zone 7B (No HRV)
Thermal Requirements for Climate Zone 7B with No HRV:
Cathedral Ceiling/Flat Ceiling: Eff. RSI 5.02 (R28.5)
Above-Grade Wall: Eff. RSI 2.80 (R15.9)
Ceiling below attic: Eff. RSI 8.50 (R48.3)
Floor above unconditioned space: Eff. RSI 5.02 (R28.5)
Below-Grade Wall: Eff. RSI 2.80 (R15.9)
Slab: Eff. RSI 2.84 (R16.1)
Thermal Requirements for Climate Zone 7B (With HRV)
Thermal Requirements for Climate Zone 7B With HRV:
Cathedral Ceiling/Flat Ceiling: Eff. RSI 5.02 (R29)
Above-Grade Wall: Eff. RSI 3.08 (R17)
Ceiling below attic: Eff. RSI 10.43 (R59)
Floor above unconditioned space: Eff. RSI 5.02 (R29)
Below-Grade Wall: Eff. RSI 2.98 (R17)
Slab: Eff. RSI 2.84 (R16)
This summary is offered for informational purposes only. It does not purport to be an exhaustive analysis of the Canadian codes or changes to the code or provide advice that will ensure guaranteed compliance with any energy or building code provision. Please consult with local authorities finalizing your installation plans.