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