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