Code Library › Volume 1 › Section 9.20 — Masonry and Insulating Concrete Form
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.20.13.5.Flashing for Weep Holes in Masonry Veneer/Masonry Walls

(1) Flashing beneath weep holes in cavity walls and masonry veneer/masonry backing walls shall (a) be bedded not less than 25 mm in the inside wythe, (b) extend to not less than 5 mm beyond the outer face of the building element below the flashing, and (c) be installed with a nominally horizontal slope toward the outside wythe.
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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.