Step 2. Framing the Fireplace
Fireplace framing can be built before or after the fireplace is set in place. Framing should be positioned to accommo- date wall coverings and fireplace facing material. The dia- gram below shows framing reference dimensions.
CAUTION: MEASURE FIREPLACE DIMENSIONS AND VERIFY FRAMING METHODS AND WALL COVERING DETAILS BEFORE FRAMING.
Framing should be constructed of 2 X 4 lumber or heavier.
Noncombustible zone is defined by 3” above the elbow for the entire width and depth (behind the front header) of the firebox.
WALL | 3” |
STUD |
B
C
A | 3 1/2” |
|
A. | ............. | 42”* |
B. | ......... 38 | 1/2” |
C. | ............... | 22” |
D. | ......... 42 | 3/4” |
E. | ......... 27 | 7/8” |
E D
Shows center of 10” x 12” vent framing holes for top and rear venting. The center of the hole is one (1) inch (25.4mm) above the center of the horizontal vent pipe.
Figure 3. Framing Dimensions
1/2” CLEARANCE FROM BACK OF FIREPLACE TO COMBUSTIBLE
1/2” CLEARANCE FROM BOTH SIDES OF FIREPLACE TO COMBUSTIBLE
FRAMING
MEMBER
0” CLEARANCE | 0” CLEARANCE TO |
FRAMING MEMBER |
12 | Heat & Glo • |