
7
ELBOW INSTALLATION
1. Metal-Fab provides a 15°(TGA15) and 30°(TGA30) Elbow
to allow chimneys to avoid framing member or roof peaks.
A maximum of 30° from the vertical is allowed, and a total
of four elbows (two pair) for each chimney installation.
Maintain 1-1/2” clearance to combustibles for 6” - 8”
diameters and 2” clearance to combustibles for 10” - 12”
diameters.
2. Attach the elbow to the chimney pipe or other support part
and twist to lock. Using the offset chart, add chimney
sections between elbows. A support band (TGSB) is
required at the upper elbow of the pair to support the load,
as shown in FIG. 16. Attach the upper elbow to bring
chimney back to vertical.
Offset combinations: see Table 3 and illustration, FIG. 17.
TABLE 3
6”,7”,8”,10”, AND 12” DIAMETER OFFSET TABLE
A15° Angle 30° Angle
Length No. Pcs. B C B C
0 0 18-7/16” 2-1/4” 20-3/16” 5”
6” 1 22-13/16” 3-3/8” 24-1/16” 7-1/4”
12” 1 28-5/8” 4-15/16” 29-1/4” 10-1/4”
18” 1 34-3/8” 6-1/2” 34-7/16” 13-1/4”
24” 1 40-3/16” 8-1/16” 39-5/8” 16-1/4”
30” 2 44-1/2” 9-1/4” 43-1/2” 18-1/2”
36” 1 51-3/4” 11-3/16” 50-1/16” 22-1/4”
42 2 56-1/8” 12-3/8” 53-15/16” 24-1/2”
48”* 1 63-3/8” 14-1/4” 60-7/16” 28-1/4”
54”* 2 67-3/4” 15-7/16” 64-3/8” 30-1/2”
60”* 2 73-1/2” 17” 69-1/2” 33-1/2”
66”* 2 79-11/16” 18-1/2” 74-3/4” 36-1/2”
72”* 2 85-1/2” 20-1/16” 79-15/16” 39-1/2”
78”* 3 89-7/16” 21-1/4” 83-13/16” 41-3/4”
84”* 2 96-11/16” 23-3/16” 90-5/16” 45-1/2”
90”* 3 102-3/8” 24-3/8” 94-3/16” 47-1/2”
96”* 2 108-1/4” 26-5/16” 100-11/16” 51-1/2”
*48” length not available for 10” and 12” diameters
C
B
A
FIG. 17
1-1/2” FOR 6”-8” DIAMETERS
2” FOR 10”-12” DIAMETERS
DIM. WILL VARY WITH ROOF PITCH
(Must maintain 1-1/2” for 6”-8” diameters,
2” for 10”-12” diameters to combustibles)
1-1/2” FOR 6”-8” DIAMETERS
2” FOR 10”-12” DIAMETERS
FIG. 18
FLASHING INSTALLATION
1. Continue the TG chimney to the roof. Cut the roof opening,
centered over the chimney. A 1-1/2 inch for 6” - 8”
diameters and 2 inch for 10” - 12” diameters, airspace around
the chimney is required as it penetrates the roof. The size of
hole in the roof will vary depending on the roof pitch. See
note for Table 1 regarding special 8TG clearances.
2. Install the next TG chimney section through the roof. See
FIG. 18. For 12” chimney only, install a
radiation shield (TGRSH) over the chimney section so that
the shield straps can be temporarily bent over the roof to
hold in place. After installing the ashing, these straps will be
attached to the ashing as shown in FIG. 19.
NOTE: If your roof is already shingled, be sure to slide the upper
edge under the shingles to prevent leakage.
3. Install a bead of caulk around the pipe at the top edge of
the ashing. Wrap the storm collar around the pipe and
imbed the edge in the caulk to prevent leakage around the
pipe.
4. Continue to install pipe sections until proper termination
height is reached. See termination section.
NAILNAIL
FIG. 16
SUPPORT BAND
(CAT. NO. TGSB)
4’ MAX.
4’ MAX.
FIRESTOP
(CAT. NO. TGFSA)
FIG. 19
CONTEMPORARY CAP
(CAT. NO. TGC)
CAULK
STORM COLLAR
BEND RADIATION SHIELD
STRAPS OVER FLASHING
EDGE MIN. 2”
(FOR 12” DIA. ONLY)
FLASHING
(CAT. NO. TGF)
DO NOT OBSTRUCT
OPENING BETWEEN
STORM COLLAR AND
FLASHING
RADIATION SHIELD