Insulated Chase Construction

Roof Support

Attic Radiation

Shield

Note: Floor and wall below the attic must be insulated using the same insulation.

 

 

Firestop

 

 

6’ 8”

 

 

(2 m)

 

7’

Min.

 

(2.1 m)

FIREPLACE

 

Min.

 

 

Figure 9

1/2” Plywood

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.

8’8'

(2.Level4 m)

Level

Drywall or Any Rigid

Material

2 x 4

Insulation

(Thermal Barrier)

 

Optional

Insulation

In Outside

Walls Of

Chase

Solid

Continuous

Surface

Outside

Base

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 10).

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 13).

Mantel and Facing

The mantel must be installed at least 39’’ (990

mm)above the base of the fireplace (Figures 7b and 11).

Fireplace Frame Section

(Top View)

3

1

4

 

5

2

1.Fireplace

2.Tiling flange

3.Wood frame (2” x 3” min)

4.Drywall

5.Tiles or brick

Figure 10

Mantel and Facing (Side View)

Mantel Drywall

2” X 3” Min.

(51mm x 76mm)

Spacer 39’’ (990 mm)

Rock Board or Other

Noncombustible Facing

Drywall

Rock Board or Other

Noncombustible

Facing

Figure 11

10

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.