Construction codes of Ontario

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Installation of Loose-Fill Insulation

Installation of Loose-Fill Insulation, (1) Except as provided in Sentences (2) to (6), loose-fill insulation shall be used on horizontal surfaces only. (2) Where loose-fill insulation is installed in an unconfined sloped space, such as an attic space over a sloped ceiling, the supporting slope shall not be more than, (a) 4.5 in 12 for […]

Installation of Spray-Applied Polyurethane

Installation of Spray-Applied Polyurethane (1) Spray-applied polyurethane insulation shall be installed in accordance with CAN/ULC-S705.2, “Thermal Insulation – Spray-Applied Rigid Polyurethane Foam, Medium Density – Application”. Article 9.25.2.5. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Installation of Thermal Insulation

Installation of Thermal Insulation (1) Insulation shall be installed so that there is a reasonably uniform insulating value over the entire face of the insulated area. (2) Insulation shall be applied to the full width and length of the space between furring or framing. (3) Except where the insulation provides the principal resistance to air leakage, […]

Installation of Vapour Barriers

Installation of Vapour Barriers (1) Products installed to function as the vapour barrier shall protect the warm side of wall, ceiling and floor assemblies. (2) Where different products are used for the vapour barrier and the insulation, the vapour barrier shall be installed sufficiently close to the warm side of the insulation to prevent condensation at design […]

Insulation Materials

Insulation Materials (1) Except as required in Sentence (2), thermal insulation shall conform to the requirements of, (a) ASTM C726, “Mineral Wool Roof Insulation Board,” (b) CAN/CGSB-51.25-M, “Thermal Insulation, Phenolic, Faced”, (c) CGSB 51-GP-27M, “Thermal Insulation, Polystyrene, Loose Fill”, (d) CAN/ULC-S701.1, “Thermal Insulation, Polystyrene Boards”, (e) CAN/ULC-S702 “Mineral Fibre Thermal Insulation […]

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 […]

Leading Edges of Treads

(1) Leading edges of treads that are bevelled or rounded shall, (a) not reduce the required tread depth by more than 15 mm, and (b) not, in any case, exceed 25 mm horizontally. Article 9.8.4.6 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.