Code Library › Volume 1 › Section 9.26 — Roofing
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.26.9.6.Exposure

(1) The exposure of wood roof shingles shall conform to Table 9.26.9.6. Table 9.26.9.6. Exposure of Wood Shingles Forming Part of Sentence 9.26.9.6.(1) Maximum Exposure, mm Roof Slope No. 1 or A Grade Length of Shingle, mm No. 2 or B Grade Length of Shingle, mm 400 450 600 400 450 600 < 1 in 3 100 115 165 90 100 140 ≥ 1 in 3 125 140 190 100 115 165

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

← Previous9.26.9.5. FasteningNext →9.26.9.7. Flashing

Common questions about this part of the code

What is the minimum roof slope for asphalt shingles and other roofing materials in Ontario?Where is ice and water shield (eave protection) required on roofs in Ontario?What are the roof flashing requirements for valleys, walls and chimneys in Ontario?

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.