Sloped Ceiling Installation:
The following information is from the National Fire Protection
Association and is listed in Fire Code 72.
Install Smoke Alarms on sloped, peaked or cathedral ceilings at,
or within 3 ft (0.9m) of the highest point (measured horizontally).
NFPA 72 states “Smoke alarms in rooms with ceiling slopes
greater than 1 ft to 8 ft (.3 m-2.4 m) horizontally shall be located
on the high side of the room”.
NFPA 72 states “A row of alarms shall be spaced and located
within 3 ft (0.9 m) of the peak of the ceiling measured
horizontally” (see figure 2).
Mobile Homes:
Modern mobile homes have been designed and built to be
energy efficient. Install Smoke/CO alarms as recommended
above (refer to Recommended Installation Instructions and figure
1). In older mobile homes that are not well insulated, extreme
heat or cold can be transferred from the outside to the inside
through poorly insulated walls and roof. This may cause a
thermal barrier, which can prevent smoke from reaching an alarm
mounted on the ceiling. In such mobile homes install your
Smoke/CO Alarm on an inside wall with the top edge of the
alarm at a minimum of 4 inches (10cm) and a maximum of 12
inches (30.5cm) below the ceiling (see figure 2). If you are not
sure about the insulation in your mobile home, or if you notice
that the outer walls and ceiling are either hot or cold, install your
alarm on an inside wall ONLY!
Installation Instructions
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FIGURE 2
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