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Roof Support
Attic
Radiation
Shield
7 Ft.
Min.
6' 8"
Min.
1/2" Plywood
Figure 17
* Floor
Ceiling
Nailing Flanges
Wall
Four nailing flanges are provided to secure the
fireplace to the floor (see Figure 18). Bend
the nailing flanges down so that each flange is
flush with the floor, then using nails or screws,
secure the fireplace to the floor (2 places each
side). The heads of the screws or nails must
be large enough to completely cover the holes
in the nailing flanges.
Fireplace Side
Nailing Flange
(2 places each side)
Figure 18
Mantel and Facing
The mantel must be installed at least 39'' (990
mm) above the base of the fireplace (Figures
15 and 20).
16
Draft Stops
Insulated Chase Construction
1/2" Plywood
Storm
Collar
Firestop
Flashing
* Floor
Ceiling
* Floor
CTDT
Wall
Termination
Ceiling
Wall
Note: Non-
Combustible
• Must have the same firestopping
Chase
Flashing
resistance as adjacent wall.
Must Be
• Must have the same insulation as
Used To
adjacent ceiling.
Cover
Chase
• Follow local rules regarding fram-
Opening
ing construction.
Firestop
NOTE: It is recommend-
ed that the chase walls
and floor be insulated in
the same manner, using
the same insulation, as
8'
the rest of the building,
Level
below the attic.
Drywall or
Any Rigid
Material
Insulation
2" x 4"
(Thermal Barrier)
Facing
1. Combustible material must be installed
flush with the fireplace. It may not project
in front of and on the fireplace (i.e. the
steel facade of the fireplace) (Figure 19).
2. Non-combustible materials such as brick,
stone or ceramic tile may project in front
of and onto the fireplace facing up to the
tiling flange (Figure 19).
Fireplace Frame Section
Unbend to floor
and nail/screw
2
1. Fireplace
2. Tiling flange
3. Wood frame (2" x 3" min)
4. Drywall
5. Tiles or brick
Figure 19
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Drywall or
Any Rigid
Material
2" x 4"
Optional
Insulation
In Outside
SEE NOTE
Walls Of
Chase
Solid
Continuous
Surface
Outside
Base
(Top View)
3
1
4
5
Mantel and Facing (Side View)
Mantel
Drywall
12"
2 x 3 Min.
(305mm)
(51mm x 76mm)
Max.
Spacer
39'' (990 mm)
Rock Board
or Other
Noncombustible
Facing
Drywall
Rock Board
or Other
Noncombustible
Facing
Figure 20
Only non-combustible mate-
rial should be superposed or
projecting over the front of
the fireplace.
Figure 21
38"
(965mm)
Min.
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