Mount smoke alarms high on walls or ceilings remember smoke rises.
Hight requireme mount smoke detector from ceiling on wall.
Every new dwelling shall be provided with smoke detectors.
Clarification is required in nfpa 72 on how to apply smoke detection spacing requirements for these high ceiling applications.
Ceiling mounted smoke detectors should be mounted at least 6 inches away from where the ceiling meets the wall.
Mount smoke alarms high on walls or ceilings remember smoke rises.
Mount the smoke detector on a wall at least 6 inches away from the ceiling but not more than 12 inches away keeping the detector away from the dead zone but high enough to detect the smoke since smoke rises.
There is inconsistency in design and code enforcement for spacing requirements of smoke detectors when installed in areas with high ceilings where high ceilings are defined as over 10 feet in height.
Below is a series of recommended mounting heights for fire alarm system equipment including different types of smoke detector including optical beam detectors and heat detectors.
The detector shall be mounted on the ceiling or wall at a point centrally located in the corridor or area giving access to rooms used for sleeping purposes and in every sleeping room.
Wall mounted alarms should be installed not more than 12 inches away from the ceiling to the top of the alarm.
Confusing but the answer is simple.
Wall mounted alarms should be installed not more than 12 inches away from the ceiling to the top of the alarm.
The table below also shows heights which detectors are permitted to be mounted at if 10 or less of the ceiling is the height shown.
Place a smoke detector about 12 inches from the ceiling on the wall.
Because carbon monoxide is slightly lighter than air and also because it may be found with warm rising air detectors should be placed on a wall about 5 feet above the floor.
The detector may be placed on the ceiling.
If you have ceilings that are pitched install the alarm within 3 feet of the peak but not within the apex of the peak four inches down from the peak.