The Ontario Building Code | Hips and Ridges
220.127.116.11. Hips and Ridges
(1) Shingles on hips and ridges shall be not less than 300 mm wide applied to provide triple coverage.
(2) Shingles referred to in Sentence (1) shall be cemented to the roof shingles and to each other with a coat of cement and fastened with nails or staples located 40 mm above the butt of the overlying shingle and 50 mm from each edge.