Code Library › Volume 1 › Section 9.7 — Windows, Doors and Skylights
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.7.6.1.Installation of Windows, Doors and Skylights

(1) The installation of windows, doors and skylights shall conform to CSA A440.4, “Window, door, and skylight installation,” except that (a) shims used to support windows, doors and skylights are permitted to be made of treated plywood, and (b) protection from precipitation for walls incorporating windows or doors and for roofs incorporating skylights, and the interfaces of these walls with windows or doors and of roofs with skylights, shall also conform to Section 9.27. (2) The installation of manufactured and pre-assembled windows, doors and skylights and the field assembly of manufactured window and door combination units shall conform to the manufacturer’s instructions. (3) Windows, doors and skylights shall be sealed to air barriers.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.