Construction codes of Ontario

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Intersection of Shingle Roofs and Walls Other Than Masonry

Intersection of Shingle Roofs and Walls Other Than Masonry (1) The intersection of shingle roofs and walls clad with other than masonry shall be protected with flashing. (2) Flashing required in Sentence (1) shall be installed so that it extends up the wall not less than 75 mm behind the sheathing paper, and extends not less than […]

Joints in Panel-Type Sheathing

Joints in Panel-Type Sheathing (1) Panel-type sheathing board shall be applied so that joints perpendicular to the roof ridge are staggered where, (a) the sheathing is applied with the surface grain parallel to the roof ridge, and (b) the thickness of the sheathing is such that the edges are required to be supported. (2) A […]

Joints in Top Plates

Joints in Top Plates (1) Joints in the top plates of loadbearing walls shall be staggered not less than one stud spacing. (2) The top plates in loadbearing walls shall be lapped or otherwise suitably tied at corners and intersecting walls in accordance with Sentence (4). (3) Joints in single top plates used with loadbearing walls […]

Joist-Type Roof Ceilings

Joist-Type Roof Ceilings When roofing is attached directly to the top of ceiling joists as is the case for cathedral or sloped ceilings, the space above the insulation must be vented to prevent the accumulation of moisture, or the space must be filled with insulation (such as sprayed closed-cell foam) that prevents air vapour from […]

Lateral Support Required

Lateral Support Required (1) Masonry walls shall be laterally supported by floor or roof construction or by intersecting masonry walls or buttresses. (2) The spacing of supports required in Sentence (1) shall be not more than, (a) 20 times the wall thickness for all loadbearing walls and exterior non-loadbearing walls, and (b) 36 times […]

Lateral Support Required

Length of Nails

Length of Nails (1) All nails shall be long enough so that not less than half their required length penetrates into the second member. Article 9.23.3.2. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.