Canada Wood Council Wall Calculator

Select from hundreds of pre-assembled, modelled examples of walls with almost any combination of materials. Each assembly lists:

• Effective thermal resistance R_eff* for complying with the National Building Code (NBC) for houses and the National Energy Code for Buildings (NECB) for larger buildings
• Installed R-value for complying with the Ontario Building Code
• Centre of cavity R-value for complying with the Quebec Construction Code.

*The calculation of effective thermal resistance is performed in compliance with NBC Subsection 9.36.5. of Division B.

Each assembly comes with a climate-specific colour-coded durability assessment, which has been determined considering computer analysis and field experience by building science experts in Canada.