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Heatilator • Birmingham BIR50-B Installation Manual • 4059-701 • Rev G • 06/29/15
6
Finishing
A. Finishing Material
Refer to Sections 1.B. and Sections 1.C. for combustible/
non-combustible materials. Refer to Figure 6.1 for non-
combustible zone.
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.
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
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 6.2 Decorative Facing
Note: We recommend mor-
tar be applied
after
facing
materials are installed.
• Apply metal lath to the metal face or non-combustible
board with corrosion-resistant, self-drilling, self-tapping
screws capable of penetrating the metal surface of the
fireplace face in preparation for final finishing material.
• 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.
These surfaces
must be covered
with non-combustible
material.
Non-combustible
sealant.
Figure 6.1 Non-combustible Facing
