Figure 8
Insulated Chase Construction
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.
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 9
).
2. Non-combustible materials such as brick,
stone or ceramic tile may project in front of
and onto the fireplace facing (
Figure 10
).
Mantel
The mantel must be installed at least 45”
(1143 mm) above the base of the fireplace
(
Figure 9
).
Figure 9
Figure 10
Roof Support
Attic Radiation
Shield
Firestop
7 Feet Min.
1/2” Plywood
2” x 4”
Drywall
Note:
Floor and wall below the attic must be
insulated using the same insulation.
Storm Collar
Flashing
Fireplace
1/2” Drywall
2” X 3” Min.
Spacer
Spacer
2” X 3” Min.
1/2” Drywall
Mantel
45”
Door
Non-Combustible Facing
Insulate Joists
Same As Ceiling
Draft Stops
Firestop
CTDT
Termination
Note: Non-
Combustible
Chase
Flashing
Must Be
Used To
Cover
Chase
Opening
Optional
Insulation
In Outside
Walls Of
Chase
Solid
Continuous
Surface
Outside
Base
Insulation
(Thermal Barrier)
8'
Level
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
9
