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Insulated Chase Construction
Note: Floor and wall below the attic must be
insulated using the same insulation.
7'
(2.1 m)
Min.
Figure 9
1/2" Plywood
Facing
IMPORTANT
The facade must be removable
once installed. The facade is
designed to overlap any facing
material installed on the front of
the fireplace. If thicker material
is installed, use the facade as a
template and make sure it can be
easily removed for servicing.
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 12).
2. Non-combustible materials such as brick,
stone or ceramic tile may project in front of
and onto the fireplace facing (Figure 13).
Mantel and Facing
The mantel must be installed at least 42"
(1067 mm) above the base of the fireplace
(Figure 11).
Roof Support
Attic Radiation
Shield
Firestop
6' 8"
(2 m)
Min.
Fireplace Frame Section
1
2
1
2
1. Fireplace
2. Front of fireplace
3. Wood frame (2" x 3" min)
4. Drywall
5. Tiles
6. Rock board or other
7. Brick
Figure 10
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Storm Collar
Flashing
Floor
Ceiling
Wall
• Must have the same firestopping
resistance as adjacent wall.
• Must have the same insulation as
adjacent ceiling.
• Follow local rules regarding framing
construction.
Drywall or Any Rigid
Material
2" x 4"
(Top View)
3
4
5
6
3
4
7
Insulate Joists
Same As Ceiling
Draft Stops
Firestop
CTDT
Termination
Note: Non-
Combustible
Chase
Flashing
Must Be
Used To
Cover
Chase
Opening
8'
8'
(2.4 m)
Level
Level
Insulation
(Thermal Barrier)
Mantel and Facing
(Side View)
Drywall
2" X 3" Min.
Mantel
(51mm x 76mm)
42" (1067mm)
Rock Board
or Other
Noncombustible
Facing
Drywall
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Rock Board
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or Other
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Noncombustible
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Facing
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Figure 11
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Optional
Insulation
In Outside
Walls Of
Chase
Solid
Continuous
Surface
Outside
Base
Spacer
9
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