Minimume Installation Clearance For Sheet Metal Fireplace

Metal or asbestos millboard must be installed between the brick slate or stone and the floor.

Minimume installation clearance for sheet metal fireplace.

This includes connector pipe and chimney pipe. All chimney enclosures must maintain the required minimum air space clearance of 2 50mm to the chimney. Minimum installation clearances to com bustibles 50 mm 2 or as established by support assembly. Shield extension beyond each side of appliance.

Using a piece of 24 gauge sheet metal installed on spacers 1 from an existing wall and floor will reduce stove clearances by 66 or from 36 to 12. Minimum clearance along the bottom of shield. The local code may require more firestops based on the total footage so account for that in your plans. The clearance reduction is usually measured from the rear of the stove to the original combustible wall not to the sheet metal.

Minimum clearance along the top of shield at ceiling. May also be installed with listed factory built fireplaces as specified in fireplace manufacturer s installation instructions and identified on the fireplace label. Parts of the mantel assembly located along the sides of the fireplace opening which project more than 1 1 2 inches 38mm from the face of the fireplace shall have additional clearance equal to the projection extension beyond 1 1 2 inches. Maximum clearance along the bottom of shield.

Minimum space between shield and combustibles. 25 mm 1 in. When enclosing the chimney below the roof line a rafter radiation shield rrs must be installed at the roof level. Install the chimney manufacturer s metal firestop in the center of the material.

There may be other factors to conform to code for clearances on the roof high wind high altitude etc that may make the minimumheight undesirable or a violation of building codes. 75 mm 3 in. 21 mm 7 8 in. Factory built fireplaces are a prefabricated sheet metal system that relies on clearances to combustibles to operate safely.

75 mm 3 in. For use in accordance with local building codes can1 b149 installation code for natural gas. 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. If the stove legs provide less than 6 inches of clearance 2 to 4 inches of hollow masonry laid to pro vide air circulation with a sheet of 24 gage sheet metal between the floor and the masonry is recommended.

Regardless of the fuel type there are common design aspects of all factory built fireplaces that must be taken into consideration when planning a diy installation. With the fireplace in place assemble the chimney sections and fasten them together as you do.