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E. Combustible Mantel
•
Refer to shaded areas of Figure 11.4 for locations and dimensions of a combustible mantel.
•
A combustible mantel may be positioned no lower than 12 in. (305 mm) above the top of the fireplace opening.
•
A combustible mantel may have a maximum depth of 12 in. (305 mm).
•
Combustible trim and materials cannot be placed within 6 in. (152mm) of the fireplace opening (top or sides).
•
Combustible materials projecting more than 1 1/2 in. (38 mm) shall not be placed within 12 in. (305 mm) from the top of
the fireplace opening.
•
Combustible trim must not cover the metal surfaces of the fireplace.
•
Mantel clearance is in accordance with Section 7-3.3.3 of ANSI/NFPA211.
Standoffs
Non-combustible
Decorative Facing
such as: Steel, iron,
brick, tile, concrete,
slate, glass, plasters
Figure 11.4 Clearances to Mantels or other Combustibles above Fireplace
40
Combustible Wall
2 x 4 stud wall
1 1/ 2 in./38 mm
maximum
Seal joint with
non-combustible
sealant
Heat & Glo • HST-42D • 27177 • Rev AF • 1/11
Combustible
Decorative Facing
12 in./305 mm
Mantel
6 in./152 mm
minimum
12 in./305 mm
minimum
6 in./152 mm
minimum
Measured from top of fireplace opening
7 ft (2134 mm)
minimum
base of fireplace
to ceiling
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