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

9.28.4.3.Stucco Lath Specifications

(1) Stucco lath shall conform to Table 9.28.4.3. Table 9.28.4.3. Stucco Lath Forming Part of Sentence 9.28.4.3.(1) Location Type of Lath Minimum Diam of Wire, mm Maximum Mesh Opening Minimum Mass, kg/m2 1.15 25 mm — Welded or woven wire 1.30 38 mm — Vertical surfaces 1.50 51 mm — Stucco mesh reinforcing — 25.8 cm2 0.98 (expanded metal) 9.5 mm rib lath — — 1.84 Horizontal surfaces(1) Cedar lath — — — Notes to Table 9.28.4.3.: (1) See Note A-Table 9.28.4.3.

This provision includes a table — formatting is preserved from the source; refer to the official code for the authoritative layout.

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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.