Code Library › Volume 1 › Section 9.27 — Cladding
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.27.8.1.Material Standards

(1) Plywood cladding shall be exterior type conforming to (a) ANSI/HPVA HP-1, “American National Standard for Hardwood and Decorative Plywood,” (b) CSA O121, “Douglas fir plywood,” (c) CSA O151, “Canadian softwood plywood,” or (d) CSA O153, “Poplar plywood.”
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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.