Finishing; Finishing Material - Heatilator BIR36-B Installation Manual

7

Finishing

A. Finishing Material
Refer to Sections 1.B. and Sections 1.C. for combustible/
non-combustible materials. Refer to Figure 7.1 for non-
combustible zone.
WARNING! Risk of Fire!
• Do NoT cover metal fireplace front with combustible
materials.
• Install combustible materials only to specified clearances
on top front and side edges.
• 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-deg 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.
• Only non-combustible materials may be used to cover
the metal fireplace front.
Figure 7.2 Decorative Facing
28
You must maintain clearances.
Finished combustible wall
Combustible material
Non-combustible
decorative facing
Continuous,
non-combustible sealant
Tile, stone or other
non-combustible material
1 in. Micore
or equivilent
insulation &
Metal strips are placed 2 in. (51 mm)
1/2 in. Durock
under the front of the fireplace and must
extend beyond the front and sides of
fireplace opening by 2 in. (51 mm)
Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/13
These surfaces
may be covered
with non-combustible
material.
Figure 7.1 Non-combustible Facing
2 x 4 stud wall
2 x 4 header, flush with
front of stand-offs
Bottom of fireplace opening
and finished hearth may be
Hearth
the same height
Refractory
Floor constructed of wood or
other combustible material
Non-combustible
sealant.
Note: We recommend mor-
tar be applied after facing
materials are installed.