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

9.20.13.6.Flashing for Weep Holes in Masonry Veneer

(1) Flashing beneath weep holes in masonry veneer over masonry backing walls shall conform to the flashing requirements for cavity walls and masonry veneer/masonry backing walls in Article 9.20.13.5. (2) Flashing beneath weep holes in masonry veneer over wood frame walls shall be installed so that it extends from a point not less than 5 mm beyond the outer face of the building element below the flashing to a point 150 mm up the wood-frame wall. (3) Where the frame wall is sheathed with a sheathing membrane, a non-wood-based rigid exterior insulating sheathing or a semi-rigid insulating sheathing with an integral sheathing membrane, the flashing shall be installed behind the sheathing membrane or insulating sheathing. (4) Flashing described in Sentence (2) is permitted to conform to the requirements for concealed flashing in Table 9.20.13.1.

This provision includes a table — formatting is preserved from the source; refer to the official code for the authoritative layout.

← Previous9.20.13.5. Flashing for Weep Holes in Masonry Veneer/MasonrNext →9.20.13.7. Flashing Joints

Common questions about this part of the code

How must brick veneer be supported and tied to a house in Ontario?How thick do above-grade masonry walls have to be in Ontario?What are the Ontario Building Code rules for above-grade ICF walls in houses?

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.