Siting of Smoke Alarms

FLAT CEILING

Siting Smoke Detector diagrams-01

  • Site at least 300mm from walls.
  • Site at least 300mm from any lights fittings.
  • Site as centrally as possible.

FLAT CEILINGS WITH BEAMS

Siting Smoke Detector diagrams-02

  • Site at least twice the depth of the beam away e.g. 150mm beam depth: site the alarm at least 300mm away from beam.

 

Siting Smoke Detector diagrams-03

  • if depth of beam is greater than 10% of the ceiling height, the beam should be treated as a wall (alarms need to be on either side of the beam).

 

PITCHED ROOF

Siting Smoke Detector diagrams-04

  • Site at no more than 600mm vertically below apex.

WALL MOUNTED

Siting Smoke Detector diagrams-05

  • The top of the detection element is between 150mm and 300mm below the ceiling.
  • Site at least 300mm from a perpendicular wall.

Siting of Heat Alarms

FLAT CEILING

Siting Heat Detector-01

  • Site at least 300mm from walls.
  • Site at least 300mm from any lights fittings.
  • Site as centrally as possible.

PITCHED ROOF

Siting Heat Detector-04

  • Site at no more than 600mm vertically below apex.

FLAT CEILING WITH BEAMS

Siting Heat Detector-02

  • Site at least twice the depth of the beam away e.g. 150mm beam depth: site the alarm at least 300mm away from beam.

Siting Heat Detector-03

  • if depth of beam is greater than 10% of the ceiling height, the beam should be treated as a wall (alarms need to be on either side of the beam).

Siting of CO Alarms

When Installing a CO alarm in a room where there is a fuel-burning appliance fitted.

CEILING MOUNTED

Siting Smoke Detector diagrams-01

  • Site at least 300mm from walls.
  • Site at least 300mm from any lights fittings.

Siting CO Detector-01

  • Site at no more than 600mm vertically below apex.

WALL MOUNTED IN A BEDROOM

Siting CO Detector_Artboard 8

  • Site close to the ceiling but at least 150 mm down.
  • Site at least 300mm from a perpendicular wall.
  • Site between 1 to 3 metres from the fuel-burning appliance.

Siting of CO Alarms

When Installing a CO alarm in a room where there is NO fuel-burning appliance fitted.

WALL MOUNTED

Siting CO Detector-07

  • Site at the breathing height of the occupants (bed height).

Siting CO Detector-08

  • Site at the breathing height of the occupants (seated height).