Code Library › Volume 1 › Section 9.10 — Fire Protection
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.10.17.2.Ceilings in Exits or Public Corridors

(1) At least 90% of the exposed surface of every ceiling in an exit or ceiling that is not sprinklered in a public corridor shall have a surface flame-spread rating of not more than 25.
← Previous9.10.17.1. Flame-Spread Rating of Interior SurfacesNext →9.10.17.3. Walls in Exits

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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.