FR

Technical Bulletin

This Technical Bulletin outlines updates to drawings and supporting documents in the Housing Design Catalogue since the release in October 2025. These revisions improve clarity, consistency, and technical accuracy, and should be reviewed by all users to ensure they are working from the most current catalogue information.

Item Region Design Document or Sheet # Update
01 AB ADU 01 A003_R1, A006_R1 Updates have been made to the Alberta Accessory Dwelling Unit 01 and 02 (AB ADU 01, AB ADU 02) roof assemblies to show a venting space of a minimum of 63mm between roof sheathing and insulation.
02 AB ADU 02 A003_R1, A006_R1 Updates have been made to the Alberta Accessory Dwelling Unit 01 and 02 (AB ADU 01, AB ADU 02) roof assemblies to show a venting space of a minimum of 63mm between roof sheathing and insulation.
03 AB ADU 01 Residential Energy Calculations (PDF, Excel) Technical Design Packages have been updated to include an energy calculation template for wall and roof assemblies.
04 AB ADU 02 Residential Energy Calculations (PDF, Excel) Technical Design Packages have been updated to include an energy calculation template for wall and roof assemblies.

* Last updated: August 14, 2026