Construction codes of Ontario

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Elements of the Second Plane of Protection (Flashing)

Elements of the Second Plane of Protection (1) The second plane of protection shall consist of a drainage plane with appropriate inner boundary and flashing to dissipate rainwater to the exterior. (2) The inner boundary of the drainage plane shall comply with, (a) Articles 9.27.3.2. to 9.27.3.6., or (b) Subsection 9.27.13. (3) The […]

End Bearing Length of Joists and Rafters

End Bearing Length of joists and rafters (1) The length of end bearing of joists and rafters shall be not less than 38 mm. Article 9.23.13.3 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Engineered Wood Products

Engineered Wood Products Several types of engineered wood products (EWPs) are routinely used in wood-frame house construction. These products can provide equivalent or superior strength compared with dimension lumber and are typically manufactured using less wood fibre and available in long lengths. They include: wood I-joists, glulam, plywood, oriented strand board (OSB), laminated veneer lumber […]

Fasteners Asphalt Shingles on Slopes of 1 in 3 or Greater

Fasteners Asphalt Shingles on Slopes of 1 in 3 or Greater (1) Except as provided in Sentence (2), shingles shall be fastened with at least four nails or staples for 1 000 mm wide shingles so that no nails or staples are exposed. (2) Where staples with an 11 mm crown are used, shingles shall be fastened […]

Fastening for Sheathing or Subflooring

Fastening for Sheathing or Subflooring (1) Except as required by Sentence (5), fastening of sheathing and subflooring shall conform to Table 9.23.3.5. (2) Staples shall not be less than 1.6 mm in diameter or thickness, with not less than a 9.5 mm crown driven with the crown parallel to framing. (3) Roofing nails for the attachment of fibreboard […]

Fire Block Materials

(1) Except as permitted by Sentences (2) to (4) and (7) fire blocks shall remain in place and prevent the passage of flames for not less than 15 min when subjected to the standard fire exposure in CAN/ULC-S101, “Fire Endurance Tests of Building Construction and Materials”. (2) Gypsum board not less than 12.7 mm thick and sheet […]

Flashing

Flashing The purpose of flashing is to prevent water from entering the building envelope and to intercept any that passes the first plane of protection and direct it to the exterior. Flashing is usually required wherever there is a discontinuity on exterior surfaces (for example, above windows), where there is a change in cladding materials […]