Code Library › Volume 1 › Section 9.28 — Stucco
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.28.1.2.Lath and Reinforcing

(1) Stucco lath or reinforcing shall be used to attach stucco to any substrate other than masonry. (2) Stucco lath or reinforcing shall be used to attach stucco to masonry where (a) the masonry is soft-burned tile or brick of less strength than the stucco, or (b) the masonry surface is not sound, clean and sufficiently rough to provide a good key. (3) Stucco applied over masonry chimneys shall be reinforced.
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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.