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Guidelines for Locating Smoke Detectors and CO Detectors
The following information is for general guidance only and it is recommended that local fire codes and reg-
ulations be consulted when locating and installing smoke and CO alarms.
Smoke Detectors
Research has shown that all hostile fires in homes generate smoke to a greater or lesser extent. Experiments
with typical fires in homes indicate that detectable quantities of smoke precede detectable levels of heat in
most cases. For these reasons, smoke alarms should be installed outside of each sleeping area and on each
storey of the home.
The following information is for general guidance only and it is recommended that local fire codes and reg-
ulations be consulted when locating and installing smoke alarms.
It is recommended that additional smoke alarms beyond those required for minimum protection be installed.
Additional areas that should be protected include: the basement; bedrooms, especially where smokers sleep;
dining rooms; furnace and utility rooms; and any hallways not protected by the required units.
On smooth ceilings, detectors may be spaced 9.1m (30 feet) apart as a guide. Other spacing may be required
depending on ceiling height, air movement, the presence of joists, uninsulated ceilings, etc. Consult National
Fire Alarm Code NFPA 72, CAN/ULC-S553-02 or other appropriate national standards for installation recom-
mendations.
• Do not locate smoke detectors at the top of peaked or gabled ceilings; the dead air space in these loca-
tions may prevent the unit from detecting smoke.
• Avoid areas with turbulent air flow, such as near doors, fans or windows. Rapid air movement around
the detector may prevent smoke from entering the unit.
• Do not locate detectors in areas of high humidity.
• Do not locate detectors in areas where the temperature rises above 38
o
C (100
o
F) or falls below 5
o
C
(41
o
F).
• Smoke detectors should always be installed in USA in accordance with NFPA 72, the National Fire Alarm
Code. Where required by applicable laws, codes, or standards for a specific type of occupancy,
approved single- and multiple-station smoke alarms shall be installed as follows:
(1) In all sleeping rooms and guest rooms.
(2) Outside of each separate dwelling unit sleeping area, within 6.4 m (21 ft) of any door to a sleeping room,
the distance measured along a path of travel.
(3) On every level of a dwelling unit, including basements.
(4) On every level of a residential board and care occupancy (small facility), including basements and exclud-
ing crawl spaces and unfinished attics.
(5) In the living area(s) of a guest suite.
(6) In the living area(s) of a residential board and care occupancy (small facility).
Figure 2
Figure 1
Figure 3
Figure 3a
Fi
ure 4
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