Code Library › Volume 1 › Section 9.29 — Interior Wall and Ceiling Finishes
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.29.6.3.Nails and Staples

(1) Except as provided in Sentence (2), nails for attaching plywood finishes shall not be less than 38 mm casing or finishing nails spaced not more than 150 mm o.c. along edge supports and 300 mm o.c. along intermediate supports, except that staples providing equivalent lateral resistance may also be used. (2) Where plywood finish provides required bracing in braced wall panels, the plywood shall be fastened in accordance with the fastening requirements for sheathing stated in Sentence 9.23.3.5.(2).
← Previous9.29.6.2. Grooved PlywoodNext →9.29.6.4. Edge Support

Common questions about this part of the code

What thickness of drywall is required and how must it be fastened in Ontario?What water-resistant backing and finish is required around tubs and showers 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.