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D. Finishing Material
Refer to Sections 12.A. and Sections 12.B. for combus-
tible/noncombustible materials. Refer to Figure 12.10 for
noncombustible zone.
WARNING! Risk of Fire! You must maintain clearances.
•
Use only non-combustible framing material below
standoffs.
•
Sheetrock, wood or other combustibles must NOT be used
as sheathing or facing in the noncombustible zone.
•
DO NOT cover metal fi replace front with combustible
materials.
•
Install combustible materials only to specifi ed 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 fi replace and facing to prevent cold air leaks.
•
Large gaps can be bridged with fi berglass rope gasket.
•
Only non-combustible materials may be used to cover the
metal fi replace front.
Finished combustible wall
Combustible material
Non-combustible
decorative facing
(up to full brick depth)
Continuous,
non-combustible sealant
Tile, stone or other
non-combustible material
1 in. Micore
or equivilent
insulation &
1/2 in. Durock
Figure 12.10 Decorative Facing
Hearth
Refractory
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)
Heatilator • Birmingham BIR50 • 4059-332 Rev F • 11/08
These surfaces
must be covered
with non-combustible
material.
Figure 12.9 Noncombustible Facing
Note: We recommend mortar be applied after
facing materials are installed.
2 x 4 stud wall
2 x 4 header, flush with
front of stand-offs
Bottom of fireplace opening
and finished hearth may be
the same height
Floor constructed of wood or
other combustible material
Non-combustible
sealant.
41
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