National Building Code of Canada 2010

Last updated: 5 November 2017
Energy efficiency requirements for housing and small buildings that are less than 600 m2 in footprint and not more than three stories, excluding some industrial occupancies.

Applicable Building Type(s)


New residential, New non-residential, Existing residential, Existing non-residential



Policy Requirement Level


Model Code



Governance


Development Authority: Canadian Commission on Building and Fire Codes (CCBFC)
Implementation Authority: Adopting jurisdiction
Verification Authority: Adopting jurisdiction
Enforcement Authority: Adopting jurisdiction



Prescriptive Compliance path


Prescriptive requirements apply to building envelope components, heating ventilating and air conditioning equipment, and potable water heating equipment.


Energy Requirements:

Insulation



Building assemblies above ground:


U-Values (W/m2.K)


Floors


Roofs, Attic


Roofs, Other


Walls


Climate zone 4


0.214


0.145


0.214


0.360


Climate zone 5


0.214


0.115


0.214


0.325


Climate zone 6


0.214


0.115


0.214


0.325


Climate zone 7A


0.199


0.096


0.199


0.325


Climate zone 7B


0.199


0.096


0.199


0.385


Climate zone 8


0.199


0.096


0.199


0.385


Building assemblies in contact / below the ground:


U-Values (W/m2.K)


Floors, heated


Floors, above the frost lint


Roof


Walls


Climate zone 4


0.431


0.510


0.510


0.503


Climate zone 5


0.431


0.510


0.510


0.336


Climate zone 6


0.431


0.510


0.510


0.336


Climate zone 7A


0.352


0.510


0.269


0.289


Climate zone 7B


0.352


0.510


0.269


0.289


Climate zone 8


0.352


0.510


0.269


0.289



Windows



U-Values (W/m2.K)


Windows


Climate zone 4


1.8


Climate zone 5


1.8


Climate zone 6


1.6


Climate zone 7A


1.6


Climate zone 7B


1.4


Climate zone 8


1.4


Doors



U-Values (W/m2.K)


Doors


Climate zone 4


1.8


Climate zone 5


1.8


Climate zone 6


1.6


Climate zone 7A


1.6


Climate zone 7B


1.4


Climate zone 8


1.4


Skylights

Total skylight area shall be less than 5% of the gross roof area

U-Values (W/m2.K)


Skylights


Climate zone 4


2.9


Climate zone 5


2.9


Climate zone 6


2.7


Climate zone 7A


2.7


Climate zone 7B


2.4


Climate zone 8


2.4


Air Leakage

Prescriptive requirements list for sealing the building air barrier




End-uses considered:
Space cooling, Space heating, Water heating, Ventilation



Performance Compliance path


Energy Performance Compliance

Performance compliance calculations determines the annual energy consumption of a reference house and sets the minimum energy target for the proposed house to that level.


Energy Requirements:

Insulation

Reduction is limited by health and safety requirements.

Windows

Where fenestration and door to gross wall area is less than 17%, the reference house is set to 17%. Where fenestration and door to gross wall area is greater than 22%, the reference house is set to 22%.

Air Leakage

An assumed building airtightness of 2.5 air changes per hour (ACH) is applied to the reference house. The proposed can measure airtightness or use an assumed 2.5 ACH in the simulation.

Space Heating System

Reference house applies a prescriptive type system for the applicable fuel type

Space Cooling System

Reference house applies a prescriptive type system for the applicable fuel type

Water Heating System

Reference house applies a prescriptive type system for the applicable fuel type



Compliance Softwares:

All energy modelling software used for code compliance calculat

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