Construction codes of Ontario

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Flashing performance requirements

Flashing performance requirements The following performance requirements should be considered when materials to be used as flashing are selected: Water Barrier The flashing assembly that includes materials and joints must shed water without allowing leakage. The ability of the flashing to seal and be detailed to avoid leakage is fundamental. Creating an effective and durable […]

Framing for a basement window

Framing for a basement window The rough framing for basement windows, doors and other openings, as show in Figure 38, may be installed at the time the foundation wall formwork is erected. Measure and check the diagonals of the frames to ensure that the frames are square. The framing should be properly braced to keep […]

Gypsum Board Supporting Insulation

Gypsum Board Supporting Insulation (1) Gypsum board supporting insulation shall be at least 12.7 mm thick. Article 9.29.5.4. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only. GYPSUM BOARD FINISH Although 9.5 mm (3⁄8 in.) thick gypsum board may be used on walls with support spacings up to 400 mm (16 […]

Heat Flow Control

Heat Flow Control All assemblies that separate the conditioned environment from the unconditioned environment, including attached garages, must be insulated. This includes roofs, walls, foundations, windows and doors. The 2012 Interim Changes to the 2010 NBC regulate the “effective” insulation value for each assembly or component of the building envelope for six different Canadian climate […]

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 […]

Installation of Windows, Doors and Skylights

(1) The installation of windows, doors and skylights shall conform to CAN/CSA-A440.4, “Window, Door, and Skylight Installation”, except that, (a) shims used to support windows, doors and skylights are permitted to be of treated plywood, and (b) protection from precipitation for walls incorporating windows or doors and for roofs incorporating skylights, and the interfaces […]