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Insulated Chase Construction
Note: Floor and wall below the attic must be
insulated using the same insulation.
Figure 16
12
Roof Support
Attic Radiation
Shield
Firestop
7' 6"
(2.3 m)
Min.
7' 10"
(2.4 m)
Min.
1/2" Plywood
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Insulate Joists
Same As Ceiling
Storm Collar
Flashing
Draft Stops
Floor
Ceiling
Firestop
Wall
CTDT
Termination
• Must have the same firestopping
Note: Non-
resistance as adjacent wall.
Combustible
• Must have the same insulation as
Chase
Flashing
adjacent ceiling.
Must Be
Used To
• Follow local rules regarding framing
Cover
construction.
Chase
Opening
Drywall or Any Rigid
Material
Insulation
2" x 4"
(Thermal Barrier)
Optional
Insulation
In Outside
Walls Of
Chase
8'
8'
(2.4 m)
Level
Level
Solid
Continuous
Surface
Outside
Base
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