Code Library › Volume 1 › Section 9.23 — Wood Frame Construction
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.23.16.2.Material Standards

(1) Wood-based panels used for roof sheathing shall conform to the requirements of (a) CSA O121, “Douglas fir plywood,” (b) CSA O151, “Canadian softwood plywood,” (c) CSA O153, “Poplar plywood,” (d) CSA O325, “Construction sheathing,” or (e) CSA O437.0, “OSB and Waferboard.”
← Previous9.23.16.1. Required Roof SheathingNext →9.23.16.3. Direction of Installation

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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.