The Ontario Building Code | Exposure and Thickness
9.27.7.6. Exposure and Thickness
(1) The exposure and butt thickness of shingles and shakes shall conform to Table 9.27.7.6.
Table 9.27.7.6.
Exposure and Thickness of wood Shingles and Shakes
Forming Part of Sentence 9.27.7.6.(1)
| Item | Column 1 | Column 2 | Column 3 | Column 4 |
|
| Shake or Shingle Length, mm | Maximum Exposure, mm |
| Minimum Butt Thickness, mm |
|
|
| Single Coursing | Double Coursing |
|
| 1. | 400 | 190 | 305 | 10 |
| 2. | 450 | 216 | 356 | 11 |
| 3. | 600 | 292 | 406 | 13 |
9.27.8. Plywood
In Plain Language
This cladding's exposure (visible portion per course) and thickness must meet the requirements set out in this article.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.