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

9.20.11.4.Anchoring Wood-Frame Roof Systems to Masonry Walls

(1) Except as permitted in Sentence (2), roof systems of wood-frame construction shall be tied to exterior masonry walls by not less than 12.7 mm diam anchor bolts, (a) spaced not more than 2.4 m apart, (b) embedded not less than 90 mm into the masonry, and (c) fastened to a rafter plate of not less than 38 mm thick lumber. (2) The roof system described in Sentence (1) is permitted to be anchored by nailing the wall furring strips to the side of the rafter plate.
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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.