Hearth and Home Technologies BIR50-B - Manual (Page 41)

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D. Finishing Material
Refer to Sections 12.A. and Sections 12.B. for combustible/
non-combustible materials.
WARNING! Risk of Fire! You must maintain clearances.
• DO NOT cover metal fireplace front with combustible
materials.
• Install combustible materials only to specified clearances
on top front and side edges.
• Complete framing and apply facing material (drywall) over
framing.
• A bead of 300° F minimum non-combustible sealant must
be used to close off any gaps at the top and sides between
the fireplace and facing to prevent cold air leaks.
• Large gaps can be bridged with fiberglass rope gasket.
Metal strips are placed 2 in. (51 mm)
under the front of the fireplace and must
extend beyond the front and sides of
fireplace opening by 2 in. (51 mm)
Continuous,
non-combustible sealant
Floor constructed of wood or
other combustible material
1 in. Micore
or equivilent
insulation &
1/2 in. Durock
Bottom of fireplace opening
and finished hearth may be
the same height
Finished combustible wall
Combustible material
Non-combustible
decorative facing
(up to full brick depth)
Tile, stone or other
non-combustible material
Hearth
Refractory
2 x 4 header, flush with
front of stand-offs
2 x 4 stud wall
Figure 12.5 Decorative Facing
Note: We recommend mortar be applied after
facing materials are installed.
Heatilator • Birmingham BIR50-B • 4059-682D• 9/12