23
Step 9. Finishing
Figure 26 shows the minimum vertical and corresponding
maximum horizontal dimensions of fireplace mantels or other
combustible projections above the top front edge of the
fireplace. See Figures 2 and 3 for other fireplace clearances.
Only non-combustible materials may be used to cover the
black fireplace front.
Figure 26.
Minimum Vertical and Maximum Horizontal
Dimensions of Combustibles above Fireplace
CAUTION: IF JOINTS BETWEEN THE FINISHED WALLS
AND THE FIREPLACE SURROUND (TOP AND SIDES)
ARE SEALED, A 300° F. MINIMUM SEALANT MATE-
RIAL MUST BE USED. THESE JOINTS ARE NOT RE-
QUIRED TO BE SEALED. ONLY NON-COMBUSTIBLE
MATERIAL (USING 300° F. MINIMUM ADHESIVE, IF
NEEDED) CAN BE APPLIED AS FACING TO THE FIRE-
PLACE SURROUND. SEE THE DIAGRAM BELOW.
Hearth Extensions
A hearth extension may be desirable for aesthetic reasons.
However, ANSI or CAN/CGAtesting standards
do not
require
hearth extensions for gas fireplace appliances.
Figure 27. Sealant Material
1”
2”
3”
4”
5”
6”
7”
8”
9”
10”
11”
1"
2”
3"
4"
5"
12”
10"
9"
8"
7"
6"
TOP FRONT EDGE
OF FIREPLACE
NOTE: ALL DIMENSIONS
SHOWN IN INCHES.
1/2” NON-COMBUSTIBLE
MATERIAL
11"
12”
31”
CEILING
1/2”
1/2”
FINISH WALL MATERIAL
MAY BE COMBUSTIBLE
- TOP AND SIDES
HIGH TEMPERATURE
(300
0
F/149
0
F. MIN.)
TOP SEAL JOINT
HIGH TEMPERATURE
(300
0
F/149
0
F. MIN.)
SIDE SEAL JOINT