Installing and Positioning Smoke Alarms

tick Because smoke rises, smoke alarms should be placed on the ceiling. If that is not possible, it may be positioned high on a wall, according to the manufacturer’s instructions.

tickSmoke alarm laws require owners of all pre-1997 built homes and units (Class 1a and sole occupancy units in class 2 buildings) to have smoke alarms installed and maintained.

As a legal minimum requirement, a smoke alarm must be installed on or near the ceiling on any storey:

    * Between any area containing bedrooms and the rest of the house or unit e.g. hallways;
    * On a storey not containing bedrooms on the most likely evacuation route from the storey.

Queensland Fire and Rescue Services strongly recommends that you consider installing additional alarms. In cases where occupants sleep with the door closed, it is especially recommended that an alarm be installed in each bedroom.

tickMains-wired smoke alarms are required in all new and significantly renovated homes and units built since July 1997. These need to be installed by a licensed electrician, in line with BCA standards.

To maximise smoke alarm operation avoid installation in the following positions:

    * In dead air space. This is an area in which trapped hot air will prevent smoke from reaching the alarm. This space generally occurs at the apex of cathedral ceilings, the corner junction of walls and ceilings, and between exposed floor joists
    * Near windows, doors, fans or air conditioners. Excessive air movement may prevent smoke and gases from reaching the smoke alarm or cause nuisance alarms
    * In or outside of the bathroom as steam may cause nuisance alarms
    * Closer than 1.5 metres to fluorescent fittings as electrical ‘noise’ or flicker may affect the smoke alarm
    * In kitchens. If there is no alternative, a photoelectric type is preferred
    * In insect infested areas, as insects flying into the alarm could cause nuisance alarms


Ideal Locations and number required by law:

Between the bedrooms and the rest of the house.
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* Minimum by law from 1 July 2007.


Near bedrooms and on every storey of a multi-level house.
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* Minimum by law from 1 July 2007.


Additional alarms are needed in homes with separated sleeping areas.
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* Minimum by law from 1 July 2007.


Inside the bedroom if you are a heavy sleeper or if you close the door.

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* Additional recommendation for added safety (not law).