Thermal Requirements

The climate zones are under the jurisdiction of the provincial governments, which may vary from those in the national model codes.  When Section 9.36 or the 2015 NECB are adopted, the provincial or municipal governments may adopt or adapt the climate zones. 

Thermal Requirements for Climate Zone 5 (No HRV)

 

Thermal Requirements for Climate Zone 5 With No HRV:

Cathedral Ceiling/Flat Ceiling: Eff. RSI 4.67 (R27)
Above-Grade Wall: Eff. RSI 3.08 (R17)
Ceiling below attic: Eff. RSI 8.67 (R49)
Floor above unconditioned space: Eff. RSI 4.67 (R27)
Below-Grade Wall: Eff. RSI 2.98 (R17)
Slab: Eff. RSI 1.96 (R11)

Thermal Requirements for Climate Zone 5 (With HRV)

 

Thermal Requirements for Climate Zone 5 With HRV:

Cathedral Ceiling/Flat Ceiling: Eff. RSI 4.67 (R27)
Above-Grade Wall: Eff. RSI 2.97 (R17)
Ceiling below attic: Eff. RSI 6.91 (R39)
Floor above unconditioned space: Eff. RSI 4.67 (R27)
Below-Grade Wall: Eff. RSI 2.98 (R17)
Slab: Eff. RSI 1.96 (R11)

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.