Roofing over Wood-Based Sheathing Built-Up Roofs (1)  Except as permitted in Sentence (2), built-up roofing applied over wood, plywood, OSB or waferboard roof sheathing shall be laid over an additional base layer of felt laid dry over the entire roof deck with at least a 50 mm headlap and a 50 mm sidelap between each sheet. […]

Roofing Staples (1)  Staples used to apply asphalt or wood shingles shall be corrosion-resistant and shall be driven with the crown parallel to the eaves. (2)  Staples used with asphalt shingles shall be not less than 19 mm long, 1.6 mm diam or thickness, with not less than a 25 mm crown, except that an 11 mm […]

Roofing Types and Slope Limits Forming Part of Sentence 9.26.3.1.(1) Table 9.26.3.1. Notes to Table 9.26.3.1.: (1) See Sentence 9.26.3.1.(2). (2) See Sentence 9.26.3.1.(3). Table 9.26.3.1. Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only. Asphalt Shingles on Slopes 1:3 or Greater Asphalt strip shingles should be a minimum No. 210 grade. […]

Alternate Installation Methods (1)  Methods described in CAN3-A123.51-M, “Asphalt Shingle Application on Roof Slopes 1:3 and Steeper”, or CAN3-A123.52-M, “Asphalt Shingle Application on Roof Slopes 1:6 to Less than 1:3”, are permitted to be used for asphalt shingle applications not described in this Section. Article 9.26.1.2 Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca […]

Securing of Shingle Courses Asphalt Shingles on Slopes of Less Than 1 in 3 (1)  The first course of shingles shall be secured by a continuous band of cement along the eaves applied so that the width of the band equals the shingle exposure plus 100 mm.     (2)  The succeeding courses of shingles shall be secured […]

Securing of Tabs Asphalt Shingles on Slopes of 1 in 3 or Greater (1)  Shingle tabs shall be secured by a spot of plastic cement not exceeding 25 mm diam under the centre of each tab or by interlocking devices or self-sealing strips. Article 9.26.7.5 Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for […]

Securing of Tabs Asphalt Shingles on Slopes of Less Than 1 in 3 (1)  Shingle tabs shall be secured with cold application cement applied at the rate of not less than 0.5 L/m² of cemented area, or hot application asphalt applied at the rate of 1 kg/m² of cemented area. Article 9.26.8.3. Ontario Regulation 332/12 Building […]