2114 3 masonry built fireplaces 4114 3 10 all combustible mantels and similar trim shall be kept at least 6 inches from the fireplace opening.
Building code gas fireplace surround.
The hearth design must be.
These are usually based on the international building code standards along with standards set by the national fire code.
Mantel corbels and brackets attached along the sides of the opening must have additional clearance if they project more than 1 1 2 inches out from the face of the fireplace.
You ll want to familiarize yourself with your local building code for fireplaces.
A mantel must be at least 6 inches from the fireplace opening.
Combustible materials and trim must be at least 6 inches from the firebox opening.
Local building codes take precedence over national and international codes but it s best if your fireplace meets or exceeds these standards.
National standard building code.
The firebox lining shall be encased with solid masonry to provide a total thickness at the back and sides of not less than 8 inches 203 mm of which not less than 4 inches 102 mm shall be of solid masonry or concrete.
2114 3 10 all combustible mantels and similar trim shall be kept at least 6 inches from fireplace opening.
National standard building code information.
Circulating air ducts used with steel fireplace units shall be constructed of metal or masonry.