Code Library › Volume 1 › Section 9.27 — Cladding
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.27.3.7.Flashing Materials

(1) Flashing shall consist of not less than (a) 1.73 mm thick sheet lead, (b) 0.33 mm thick galvanized steel, (c) 0.46 mm thick copper, (d) 0.46 mm thick zinc, (e) 0.48 mm thick aluminum, or (f) 1.02 mm thick vinyl.
← Previous9.27.3.6. Face Sealed Cladding (See Note A-9.27.3.6.)Next →9.27.3.8. Flashing Installation

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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.