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
!WARNING: WHEN FINISHING THE FIREPLACE, NEVER OBSTRUCT OR MODIFY THE AIR IN- LET/OUTLET GRILLES IN ANY MANNER.
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| CEILING |
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| 12" |
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| 11" |
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| 10" |
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| 9" |
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| 31” | |
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| 8" |
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| 7" |
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| 6" |
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| 12” |
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| 5" |
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| 11” |
| 4" |
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| 10” |
2" 3" |
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| 8” | 9” | |
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| 5” | 6” | 7” | |||
1” |
| 4" |
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| 2” | 3” |
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1” |
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TOP FRONT EDGE
OF FIREPLACE
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
FINISH WALL MATERIAL MAY BE DRYWALL | |
| - TOP AND SIDES |
| 0 |
0 | 0 |
HIGH TEMPERATURE (300O F/149O C MIN.) | |
| TOP & SIDE SEAL JOINT |
Figure 29. | Sealant Material |
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.
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