5 1
A p p e n d i x A : G u i d e l i n e s f o r
L o c a t i n g S m o k e D e t e c t o r s
Research has shown that all hostile fires in homes gen-
erate 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 sto-
rey of the home.
The following information is for general guidance only
and it is recommended that local fire codes and regula-
tions 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 pres-
ence of joists, uninsulated ceilings, etc. Consult
National Fire Alarm Code NFPA 72, CAN/ULC-S553-
M86 or other appropriate national standards for instal-
lation recommendations.
Do not locate smoke detectors at the top of peaked or
gabled ceilings; the dead air space in these locations
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 accor-
dance with NFPA 72, the National Fire Alarm Code.
Smoke detectors should always be located in accor-
dance with:
• Paragraph 2-2.1.1.1 of NFPA 72:
“Smoke detectors
shall be installed outside of each separate sleeping
area in the immediate vicinity of the bedrooms and
on each additional story of the family living unit,
including basements and excluding crawl spaces
and unfinished attics. In new construction, a
smoke detector also shall be installed in each
sleeping room.”
•
Paragraph 2-2.1.1.2 of NFPA 72:
“Split level
arrangement. Smoke detectors are required
where shown. Smoke detectors are optional
where a door is not provided between living
room and recreation room.”