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

9.10.13.14.Fire Stop Flaps

(1) Fire stop flaps in ceiling membranes required in Sentence 9.10.5.1.(3) shall (a) conform to CAN/ULC-S112.2, “Standard Method of Fire Test of Ceiling Firestop Flap Assemblies,” and (b) activate at a temperature approximately 30°C above the normal maximum temperature that occurs in the ducts, whether the air duct system is operating or shut down.
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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.