D. Mantel Projections
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| FINISH WALL |
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| COMBUSTIBLE |
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| NO COMBUSTIBLES |
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| COMBUSTIBLE |
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39 IN. |
| FRAMING |
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| METAL PANELS | 4 INCH |
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| (PROVIDED) | MINIMUM |
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| COMBUSTIBLE | |
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| UNLIMITED | |
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| PROJECTIONS | |
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| MATERIAL | |
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| 12” |
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| 9” |
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| 6” |
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| 12 IN. |
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| 3” | MIN. |
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| 8 IN. MIN. |
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| 6 IN. MIN. |
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FACING MATERIAL | TOP OF FIREPLACE | Figure 3.4 Clearances to Mantel Legs or Wall Projections | |
MIN. 1/2 IN. THICKNESS | |||
| OPENING | (Acceptable on both sides of opening.) | |
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| Height |
| in. | 6 | 7 | 8 | 9 | 10 | 11 |
| 12 |
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| above |
| mm | 152 | 178 | 203 | 228 | 254 | 279 |
| 205 |
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| Horizontal | in. | 3 | 6 | 9 |
| 12 |
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| Mantel |
| mm | 76 | 121 | 152 | 191 | 228 | 267 |
| 305 |
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Figure 3.3 | Clearances to mantels or other combustibles |
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E. Hearth Extension |
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| MARBLE, GRANITE, TILE OR |
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The base of the fireplace may sit on a |
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| HEARTH EXTENSION | ||||||||||||
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| OF ASH LIP | ||||||||||||
combustible surface. The area in front of |
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the fireplace must be protected by a non- |
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combustible hearth extension, unless the |
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fireplace is raised a minimum of 3 inches |
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above the combustible floor or hearth. |
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| 1 in. Max. |
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See figures 3.5 and 3.6. |
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Figure 3.5 Fireplace sitting on combustible surface.
FRONT EDGE |
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OF ASH LIP |
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| 4 INCH |
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| 3 INCH MIN. | |||
WOOD OR OTHER | COMBUSTIBLES UP TO | BOTTOM |
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COMBUSTIBLE | 1 INCH THICK ALLOWED | OF FIREPLACE | COMBUSTIBLE | ||||||
FLOOR OR PLATFORM | UNDER THE OPENING |
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| MATERIAL |
Figure 3.6 Fireplace raised a minimum of 3 inches away from combustible surface.
10 | Heat & Glo • |