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Fireplace clearance to combustibles. Lynn underwood a building official in norfolk virginia replies. Maximum 1 12 projection at 2 minimum clearance. Some zero clearance fireplace products have labels andor instructions listing 12 or more clearance to certain parts.
Combustible fireplace surrounds and mantels must be held back from the actual fireplace opening to minimize fire danger. Combustible mantel clearances from top of unit are shown in the diagram below. However gas fireplaces have more in common with gas furnaces and space heaters than with wood burning fireplaces.
Maintain clearances to combustibles. Gas fireplaces and gas logs may be installed in wood burning fireplaces. The fireplace facing clearance requirements vary depending on how much it projects above the brick face.
Safety screen and louvers because of the extreme heat this fireplace emits the mantel clearances are critical. Always follow the installation instructions for the fireplace paying special attention to warnings and fire hazard clearances. All wood beams joists studs and other combustible material shall have a clearance of not less than 2 inches 51 mm from the front faces and sides of masonry fireplaces and not less than 4 inches 102 mm from the back faces of masonry fireplaces.
Tact with combustibles in accordance with ul 127. 6 is of clearance from combustibles is required on either side of the opening and above but 12 is required above the opening if the the facing projects more than 1 12. Gas fireplaces designed to fit into masonry fireplaces are often referred to as fireplace inserts.