Hearth and Home Technologies CASTLEWOOD 42 - Manual (Page 25)

Outdoor Lifestyles by Hearth & Home Technologies Inc. • 4070-300 Rev D • 11/11 25
F. Finishing Material
Refer to Sections 9.A. and Sections 9.B. for combustible/
non-combustible materials. Refer to Figure 9.2 for non-com-
bustible zone if cooling air hoods are installed.
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 non-combustible zone.
• 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-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.
These surfaces
must be covered
with non-combustible
material. Non-combustible
sealant.
Figure 9.1 Non-combustible Facing
Note: We recommend mortar be applied after
facing materials are installed. Refer to Sec-
tion 7.E
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
Non-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 9.2 Decorative Facing
WARNING! Risk of Fire! Use only non combustible
material when cooling hoods are not installed.