In Division B, Part 9 of the code you'll find information about performance and building envelope components such as:
| Windows, Doors and Skylights | Section 9.7 |
| Sound Transmission | Section 9.11 |
| Roof Spaces | Section 9.19 |
| Heat Transfer, Air Leakage and Condensation Control | Section 9.25 |
| Ventilation | Section 9.32 |
| Heating and Air Conditioning | Section 9.33 |
| Energy Efficiency | Section 9.36 |
| Location of Low Permeance Materials - NOTES | Notes to Part 9 A-9.25.5 |
| Calculating Effective Thermal Resistance - NOTES | Notes to Part 9 A-9.36.2.4 (1) |
The sections in bold have the most bearing on control layers like insulation, air barriers and vapour retarders.
Shortly after the official code is published every 5 years, an illustrated version is created that features diagrams and tables that provide more clarity to users like designers and builders.
In the Illustrated User's Guide, you'll also find walk-through calculations and drawings that can help you figure out the proper placement of barriers and effective thermal RSI / R-Value of assemblies.
