Construction codes of Ontario

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Vent Requirements

Vent Requirements (1) Except as provided in Sentence (2), the unobstructed vent area shall be not less than 1/300 of the insulated ceiling area. (2) Where the roof slope is less than 1 in 6 or in roofs that are constructed with roof joists, the unobstructed vent area shall be not less than 1/150 of […]

Ventilation of Rooms and Spaces

Ventilation of Rooms and Spaces, (1) Except as permitted in Sentence (2), rooms or spaces in a residential occupancy shall be ventilated by natural means in accordance with Subsection 9.32.2. (2) The natural ventilation of rooms or spaces required in Sentence (1) may be provided by mechanical means. (3) Where a room or space is not provided with […]

Ventilation Systems Coupled with Forced Air Heating Systems

Ventilation Systems Coupled with Forced Air Heating Systems (1) This Article applies to a mechanical ventilation system serving a house or an individual dwelling unit that contains a forced air heating system which is used for delivery of ventilation air. (2) Where a mechanical ventilation system serves a Type I dwelling unit, a ventilation supply inlet is […]

Ventilation Systems Not Coupled with Forced Air Heating Systems

Ventilation Systems Not Coupled with Forced Air Heating Systems (1) This Article applies to a mechanical ventilation system in a dwelling unit that, (a) does not contain a forced air heating system, or (b) contains a forced air heating system which is not used for circulation of the ventilation air. (2) The mechanical ventilation […]

Venting Clearances (attic)

Venting Clearances (attic) (1) Except as provided in Sentence (2), where venting is provided to a roof joist space, not less than 63 mm of space shall be provided between the top of the insulation and the underside of the roof sheathing. (2) Where venting is provided at the junction of sloped roofs and exterior walls […]

Venting of Laundry-Drying Equipment

Venting of Laundry-Drying Equipment (1) Exhaust ducts or vents connected to laundry-drying equipment shall discharge directly to the outdoors. (2) Exhaust ducts connected to laundry-drying equipment shall be, (a) independent of other exhaust ducts, (b) accessible for cleaning, and (c) constructed of a smooth corrosion-resistant material. (3) Where collective venting of multiple installations […]

Wiring in ducts and plenum chambers

Wiring in ducts and plenum chambers 1) No electrical equipment of any type, unless marked for the purpose, shall be installed in ducts used to transport dust, loose stock, or flammable vapours. 2) No electrical equipment, unless marked for the purpose, shall be installed a) in any duct used for vapour removal or for ventilation […]