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Home > Our Brands > Roxul Insulation - Building Codes

Roxul Insulation - Building Codes

Roxul® The Better Insulation. What it's made of makes all the difference. Roxul® The Better Insulation. What it's made of makes all the difference.

BUILDING CODES

Insulation Requirements by Province Based on the National Building Code of Canada 2010*

Canadian Zone Map

Zone Legend**

Zone

Heating Degree Days

Climate Description

Example Canadian City

4

< 3000 HDD

Mixed

Vancouver

5

3000 to 3999

Cool

Toronto

6

4000 to 4999

Cold

Montreal, St. Johns

7A

5000 to 5999

Very Cold

Edmonton, Regina

7B

6000 to 6999

Very Cold

Fort McMurray, Whitehorse

8

> 7000

Subartic

Northwest Territories, Nunavut

ALBERTA >>

Zone 6Zone 7AZone 7B
Without H/ERVWith H/ERVWithout H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR39R39R49R39R49R49
Cathedral Ceiling & Flat RoofR26.5R26.5R26.5R26.5R26.5R26.5
Exterior Walls (Above Grade)R17.5R17R17.5R17R22R17.5
Floors Over Unheated SpaceR26.5R26.5R28.5R28.5R28.5R28.5
Basement Wall (Below Grade)R17R17R20R17R20R17
Zone 8
Without H/ERVWith H/ERV
AtticR59R59
Cathedral Ceiling & Flat RoofR28.5R28.5
Exterior Walls (Above Grade)R22R17.5
Floors Over Unheated Space28.528.5
Basement Wall (Below Grade)R20R17

British Columbia >>

Zone 4Zone 5Zone 6
Without H/ERVWith H/ERVWithout H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR39R39R49R39R49R49
Cathedral Ceiling & Flat RoofR26.5R26.5R26.5R26.5R26.5R26.5
Exterior Walls (Above Grade)R15.7R16R17.5R17R17.5R17
Floors Over Unheated SpaceR26.5R26.5R26.5R26.5R26.5R26.5
Basement Wall (Below Grade)R11R11R17R17R17R17
Zone 7AZone 7BZone 8
Without H/ERVWith H/ERVWithout H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR59R49R59R59R59R59
Cathedral Ceiling & Flat RoofR28.5R28.5R28.5R28.5R28.5R28.5
Exterior Walls (Above Grade)R17.5R17R22R17.5R22R17.5
Floors Over Unheated SpaceR28.5R28.5R28.5R28.5R28.5R28.5
Basement Wall (Below Grade)R20R17R20R17R20R17

Manitoba >>

Zone 7AZone 7BZone 8
Without H/ERVWith H/ERVWithout H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR59R49R59R59R59R59
Cathedral Ceiling & Flat RoofR28.5R28.5R28.5R28.5R28.5R28.5
Exterior Walls (Above Grade)R17.5R17R22R17.5R22R17.5
Floors Over Unheated SpaceR28.5R28.5R28.5R28.5R28.5R28.5
Basement Wall (Below Grade)R20R17R20R17R20R17

New Brunswick >>

Zone 6Zone 7A
Without H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR49R49R59R59
Cathedral Ceiling & Flat RoofR26.5R26.5R28.5R28.5
Exterior Walls (Above Grade)R17.5R17R17.5R17
Floors Over Unheated SpaceR26.5R26.5R28.5R28.5
Basement Wall (Below Grade)R17R17R20R17

Newfoundland >>

Zone 6Zone 7AZone 7B
Without H/ERVWith H/ERVWithout H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR49R49R59R59R59R59
Cathedral Ceiling & Flat RoofR26.5R26.5R28.5R28.5R28.5R28.5
Exterior Walls (Above Grade)R17.5R17R17.5R17R2217.5
Floors Over Unheated SpaceR26.5R26.5R28.5R28.5R28.5R28.5
Basement Wall (Below Grade)R17R17R20R17R2017
Zone 8
Without H/ERVWith H/ERV
AtticR59R59
Cathedral Ceiling & Flat RoofR28.5R28.5
Exterior Walls (Above Grade)R22R17.5
Floors Over Unheated Space28.528.5
Basement Wall (Below Grade)R20R17

Northwest Territory >>

Zone 8
Without H/ERVWith H/ERV
AtticR59R59
Cathedral Ceiling & Flat RoofR28.5R28.5
Exterior Walls (Above Grade)R22R17.5
Floors Over Unheated Space28.528.5
Basement Wall (Below Grade)R20R17

Nova Scotia >>

Zone 5Zone 6
Without H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR49R39R49R49
Cathedral Ceiling & Flat RoofR26.5R26.5R26.5R26.5
Exterior Walls (Above Grade)R17.5R17R17.5R17
Floors Over Unheated SpaceR26.5R26.5R26.5R26.5
Basement Wall (Below Grade)R17R17R17R17

Nunavut Territory >>

Zone 8
Without H/ERVWith H/ERV
AtticR59R59
Cathedral Ceiling & Flat RoofR28.5R28.5
Exterior Walls (Above Grade)R22R17.5
Floors Over Unheated Space28.528.5
Basement Wall (Below Grade)R20R17

Ontario >>

Zone 5Zone 6Zone 7A
Without H/ERVWith H/ERVWithout H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR49R39R49R49R59R49
Cathedral Ceiling & Flat RoofR26.5R26.5R26.5R26.5R28.528.5
Exterior Walls (Above Grade)R17.5R17R17.5R17R17.5R17
Floors Over Unheated SpaceR26.5R26.5R26.5R26.5R28.5R28.5
Basement Wall (Below Grade)R17R17R17R17R20R17
Zone 7BZone 8
Without H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR59R59R59R59
Cathedral Ceiling & Flat RoofR28.5R28.5R28.5R28.5
Exterior Walls (Above Grade)R22R17.5R22R17.5
Floors Over Unheated SpaceR28.5R28.5R28.5R28.5
Basement Wall (Below Grade)R20R17R20R17

PEI >>

Zone 6
Without H/ERVWith H/ERV
AtticR49R49
Cathedral Ceiling & Flat RoofR26.5R26.5
Exterior Walls (Above Grade)R17.5R17
Floors Over Unheated SpaceR26.5R26.5
Basement Wall (Below Grade)R17R17

Quebec >>

Zone 6Zone 7AZone 7B
Without H/ERVWith H/ERVWithout H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR49R49R59R59R59R59
Cathedral Ceiling & Flat RoofR26.5R26.5R28.5R28.5R28.5R28.5
Exterior Walls (Above Grade)R17.5R17R17.5R17R2217.5
Floors Over Unheated SpaceR26.5R26.5R28.5R28.5R28.5R28.5
Basement Wall (Below Grade)R17R17R20R17R2017
Zone 8
Without H/ERVWith H/ERV
AtticR59R59
Cathedral Ceiling & Flat RoofR28.5R28.5
Exterior Walls (Above Grade)R22R17.5
Floors Over Unheated Space28.528.5
Basement Wall (Below Grade)R20R17

Saskatchewan >>

Zone 6Zone 7AZone 7B
Without H/ERVWith H/ERVWithout H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR49R49R59R59R59R59
Cathedral Ceiling & Flat RoofR26.5R26.5R28.5R28.5R28.5R28.5
Exterior Walls (Above Grade)R17.5R17R17.5R17R2217.5
Floors Over Unheated SpaceR26.5R26.5R28.5R28.5R28.5R28.5
Basement Wall (Below Grade)R17R17R20R17R2017
Zone 8
Without H/ERVWith H/ERV
AtticR59R59
Cathedral Ceiling & Flat RoofR28.5R28.5
Exterior Walls (Above Grade)R22R17.5
Floors Over Unheated Space28.528.5
Basement Wall (Below Grade)R20R17

Yukon Territory >>

Zone 7BZone 8
Without H/ERVWith H/ERVWithout H/ERVWith H/ERV
AtticR59R59R59R59
Cathedral Ceiling & Flat RoofR28.5R28.5R28.5R28.5
Exterior Walls (Above Grade)R22R17.5R22R17.5
Floors Over Unheated SpaceR28.5R28.5R28.5R28.5
Basement Wall (Below Grade)R20R17R20R17

AFUE (Additional Fuel Utilization Efficiency): An efficiency description of annual output energy and annual input energy as developed in accordance with U.S. Department of Energy (DOE).

HDD (Heating Degree Day): The measure of how much (in degrees) and how long (in days) the temperature stays below 18 Degrees Celsius.

H/ERV: A product that is either an HRV or an ERV as defined below:
  HRV (Heat-Recovery Ventilator): A factory-assembled packaged unit including fans or blowers that transfers heat between two isolated airstreams.
  ERV (Energy-Recovery Ventilator): A heat-recovery ventilator designed to transfer heat and moisture.

Rated R-Value of Insulation: The thermal resistance of the insulation alone as specified by the manufacturer in units of h*ft^2* Degrees F/Btu at a mean temperature of 75 Degrees Fahrenheit. Rated R-Value refers to the thermal resistance of the added insulation.

IMPORTANT NOTE: Building codes often differ by province and climate zone. As the codes and R-Values are constantly increasing we strongly recommend that you check your local building code for specific details before starting your project.

* Insulation Requirements by Province Based on The National Building Code of Canada 2010 (NBC 2010) section 9.36 - NBC 2010 is a model building code - please check with your local building code authority to confirm adoption in your municipality. All values are taken from Table 9.36.2.6.A & 9.36.2.8A of the NBC 2010 - after December 2012 revision.

** Based on NBC 2010 Zones

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