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These surfaces
may be covered
with non-combustible
material.
Non-combustible
sealant.
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.
Figure 12.9 Noncombustible Facing
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
Double HX4
Hearth Ext
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 12.10 Decorative Facing
Heat & Glo • RUTHERFORD-50 • 4059-333 Rev C • 06/08