23
Step 9. Finishing
Figure 27 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 27.
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/CGA testing standards
do not
require
hearth extensions for gas fireplace appliances.
Figure 28. Sealant Material
!
WARNING: WHEN FINISHING THE FIREPLACE,
NEVER OBSTRUCT OR MODIFY THE AIR INLET/
OUTLET GRILLES IN ANY MANNER.
TOP FRONT EDGE
OF FIREPLACE
2”
3”
4”
5”
6”
7”
8”
9”
10”
11”
12”
1”
3”
4”
5”
6”
7”
8”
9”
10”
11”
12”
31”
2”
1”
CEILING
1/2”(13mm)
1/2”(13mm)
FINISH WALL MATERIAL MAY BE DRYWALL
- TOP AND SIDES
HIGH TEMPERATURE
(300
0
F. 149
0
C MIN.) SEAL JOINT