Part 10.6 Ventilation
New for 2022
- Openings, windows, doors or other devices which can be opened—
- Natural ventilation to a room may come through a window, opening, door or other device from an adjoining room (including an enclosed verandah) if—
- the room to be ventilated or the adjoining room is not a sanitary compartment; and
- the window, opening, door or other device has a ventilating area of not less than 5% of the floor area of the room to be ventilated; and
- the adjoining room has a window, opening, door or other device with a ventilating area of not less than 5% of the combined floor areas of both rooms; and
- the ventilating areas specified may be reduced as appropriate if direct natural ventilation is provided from another source (See Figure 10.6.2).
- An exhaust fan or other means of mechanical ventilation may be used to ventilate a sanitary compartment, laundry, kitchen or bathroom, or where mechanical ventilation is provided in accordance with 10.6.3(b), provided contaminated air exhausts comply with 10.8.2.
The ventilating area of a window is measured as the size of the openable sash of the window. This is the case regardless of the type of window, i.e. whether it is an awning, casement or sliding window and irrespective of the restrictions on the openable sash.
The use of borrowed ventilation is acceptable if the provisions of 10.6.2(b) are applied to the subject room and to the total area of each relevant room.