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

9.28.6.3.First Coat

(1) The first coat shall be not less than 6 mm thick, measured from the face of the lath or masonry, fully embedding the lath. (2) The surface of the first coat shall be scored to provide a key with the second coat.
← Previous9.28.6.2. Number of Coats and Total ThicknessNext →9.28.6.4. Second Coat

Common questions about this part of the code

What are the lath and mix requirements for exterior stucco in Ontario?How much clearance does stucco need above the ground in Ontario?

Understand this provision in seconds

BUILDAiD Assist explains any article of the building code in plain English — with exact citations, exceptions and related requirements.

Try BUILDAiD Beta

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.