34846-2-1016
Page 23
Non-combustible Board Requirements
1. Do not attach non-combustible board to the fireplace. Attach
non-combustible board only to side studs and header board.
2. Predrill holes into non-combustible board. Counterlink holes
are recommended.
3. Use only high-temperature adhesive and high-temperature
paints with the non-combustible board.
4.
Do not over-tighten screws going through non-combustible board.
FINISHED
WALL
NON-COMBUSTIBLE
BOARD INSTALLED ON
TOP OF APPLIANCE
FLUSH WITH FACE
FOR TILING OVER
FACE OR FIREPLACE
APPLIANCE
OPENING
Figure 28 - Tiling or Non-Combustible Material Application
Tile or non-combustbile materials can be applied on top of the non-
combustible board and finished wall as their instructions require.
FIREPLACE INSTALLATION
NON-COMBUSTIBLE
BOARD INSTALLED
OVER APPLIANCE OPENING
NON-COMBUSTIBLE
BOARD INSTALLED
ON BOTH SIDES
APPLIANCE
OPENING
2 1/4”
FINISHED
WALL
Figure 29 - High Temperature Paint Application
APPLIANCE
OPENING
STANDOFFS
FRAMING
NON-COMBUSTIBLE
TILE OR OTHER
MATERIAL
FRAMING
HEADER
13”
G
FINISHED
WALL
NON-COMBUSTIBLE
BOARD INSTALLED
ON TOP OF APPLIANCE
FINISHED
WALL
NON-COMBUSTIBLE
TILE OR OTHER
MATERIAL
Figure 30 - Tiling or Non-Combustible Material Application
TABLE 3 - MINIMUM DIMENSIONS (in inches) FOR FIGURES 28 - 34
A
B
C
D
E
F
G
VFLL38FP(3,9)0L25
11-3/4*
43-1/2
35-1/4
48-7/8
69
34-1/2
11-1/4
VFLL38FP(3,9)0L
13-3/4*
43-1/2
35-1/4
48-7/8
69
34-1/2
13-1/4
VFLL48FP(3,9)0L
12*
53
35-1/4
53-1/2
75-5/8
37-7/8
11-1/2
* Minimum clearance with 1/2" non-combustible board over face of fireplace.
NOTE:
If using
a decorative
front, see its
instructions for
areas required
to be left open.
APPLIANCE
OPENING
NON-COMBUSTIBLE
BOARD INSTALLED
OVER APPLIANCE OPENING
NON-COMBUSTIBLE
BOARD INSTALLED
ON BOTH SIDES
A
FINISHED
WALL
PAINTED
FINISHED
PAINTED WALL
STANDOFFS
FRAMING
FRAMING
HEADER
13”
Figure 31 - High Temperature Paint Application