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Framing the Roof
¥
Follow the manufacturer's instructions for the use of flashing
and an adjustable storm collar at the roof line to prevent water
from entering the house.
¥
The table below may be used to determine the appropriate
framing size. When installing into a sloped roof, it is important
to determine the size of the framing for clearance purposes.
Use the appropriate column for 2 x 4 or 2 x 6 rafters. It is not
necessary to frame around the hole opening if the clearance to
combustibles can be maintained between two rafters.
SLOPE
0/12
1/12
2/12
3/12
4/12
5/12
6/12
7/12
8/12
9/12
10/12
11/12
12/12
Chimney Termination Requirements
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The chimney must have a chimney cap
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The chimney must terminate a minimum 3' above the roof and 2' above any portion within 10'
(measured horizontally). This applies to flat and sloped roofs.
2' Minimum
? In some problematic situations, additional chimney height above the specified minimums may be
necessary to reduce wind-induced down drafting and back puffing, or to increase draft, thereby
improving fireplace operating characteristics.
¥
Chimneys extending beyond a certain height (frequently 5') above the roof may require braces
(check the chimney instructions for details)
B
LOCK
Chimney Type
Temco (12" diameter)
2 by 4 Rafter
2 by 6 Rafter
16 x 16
16 x 16
16 x 16 1/2
16 x 16 5/8
16 x 17
16 x 17 1/4
16 x 17 1/2
16 x 18
16 x 18 1/4
16 x 18 7/8
16 x 19
16 x 19 1/4
16 x 19 7/8
16 x 20 7/8
16 x 20 3/4
16 x 21 1/2
16 x 21 3/4
16 x 23
16 x 22 3/4
16 x 24 1/4
16 x 23 3/4
16 x 25 1/2
16 x 25
16 x 26 3/4
16 x 26 1/8
16 x 28 1/8
Ridge
10'
-I
I
N
NSTALLATION
Chimney Type
Superior, FMI, or Marco (12-1/2" dia.)
2 by 4 Rafter
2 by 6 Rafter
16 1/2 x 16 1/2
16 1/2 x 16 1/2
16 1/2 x 17
16 1/2 x 17 1/8
16 1/2 x 17 1/2
16 1/2 x 17 3/4
16 1/2 x 18
16 1/2 x 18 1/2
16 1/2 x 18 3/4
16 1/2 x 19 3/8
16 1/2 x 19 1/2
16 1/2 x 19 3/4
16 1/2 x 20 3/8
16 1/2 x 21 3/8
16 1/2 x 21 1/4
16 1/2 x 22
16 1/2 x 22 1/4
16 1/2 x 23 1/2
16 1/2 x 23 1/4
16 1/2 x 24 3/4
16 1/2 x 24 1/4
16 1/2 x 26
16 1/2 x 25 1/2
16 1/2 x 27 1/4
16 1/2 x 26 5/8
16 1/2 x 28 5/8
10' or Greater
Wall or
3' Minimum
Parapet
6"
(C
)
ONTINUED
Framing Size
Less
Than 10'
24"
42"
36"
18"
"A"
"B"
P
15
AGE
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