The Ontario Building Code | Spacing and Joints
9.26.9.4. Spacing and Joints
(1) Shingles shall be spaced approximately 6 mm apart and offset at the joints in adjacent courses not less than 40 mm so that joints in alternate courses are staggered.
9.26.9.4. Spacing and Joints
(1) Shingles shall be spaced approximately 6 mm apart and offset at the joints in adjacent courses not less than 40 mm so that joints in alternate courses are staggered.
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