25
Step 9. Finishing
Figure 28 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.
WARNING: WHEN FINISHING THE FIREPLACE,
NEVER OBSTRUCT OR MODIFY THE AIR IN-
LET/OUTLET GRILLES IN ANY MANNER.
!
Figure 28.
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 29. Sealant Material
2”
4"
5”
6”
7”
8”
9”
2"
3"
4"
5"
12"
11"
10"
9"
8"
7"
6"
TOP FRONT EDGE
OF FIREPLACE
3”
11”
12”
10”
31”
CEILING
1
1
