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

9.23.16.1.Required Roof Sheathing

(1) Except where the 1-in-50 hourly wind pressure is less than 0.8 kPa and the seismic spectral acceleration, Sa(0.2), is less than or equal to 0.70, continuous lumber or panel-type roof sheathing shall be installed to support the roofing.
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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.