PENETRAT�NG THE ROOF
To maintain a ]-inch clearance to the pipe on
2
roof with a
pitch, a rectangular opening must be cut.
STEP
1: Determine the center point through which the pipe
will penetrate the roof.
STEP
2: Detem1ine the center point of the roof. Pitch is the
distance the roof drops over a given span, usually 12 inches.
A 6/12 pitch means that th
:oof
drops 6 inches for each 12
inches one measure horizontally down f
r
om the roof rafters.
STEP
3: Use the roof opening chart (figure 11) to determine
the conect opening length and flashing required.
STEP
4:
Remove the shingles around the opening measured
and cut out this section.
STEP
5:
Add the next sections of the pipe until the end
penetrates the roofline. Check to see that the proper
clearances are maintained. Extend chimney by adding
sections of double wall pipe until pipe is a minimum of 30
inches above the highest point of the roof cutout. Tem1ination
and chimney must extend a minimum of 36 inches above the
highest point where it passes through roof.
PITCH
SLOPE
OPENING "A" MAX
USE FLASHING
(deqrees)
/inches)
MODEL NO.
FLAT
0
15
V6F-8DM
0-6/12
26.6
16 • 1/8
V6F-8DM
6112 - 12/12
45.0
20 • 3/8
V12F-8DM
Figure 11
ROOF OPENING CHART
FLASHING INSTALLATION (V6F-8DM
or
Vl2F-8DM)
Determine the flashing to be used with the roof opening chart.
Slide flashing over pipe until base is flat against roof. Replace
as many shingles as needed to cover exposed area and flashing
base. Secure in position by nailing through shingles (see
figure 12).
DO NOT NAIL THROUGH FLASHING CONE.
- 6 -
£NS'fALLING FLASHING ON
A METAL
ROOF
When installing the flashing on a metal roof, it is required that
putty tape be used between the flashing and the roof The
flashing must be secured to the roof using #8 x ¾" screws and
then sealed with roof coating to prevent leakage through the
screw holes. A roof coating must also be applied around the
perimeter of the flashing to provide a proper seal.
·-
-
:.
···:
"="'
--
Figure 12
FLASHING INSTALLATION
STORM COLLAR INST ALLA. TION (SCI or SC2)
Place storm collar over pipe and slide down until it is snug
against the open edge of the flashing (see figure J 3). Use SCJ
for all round terminations and SC2 for all tem1inations with
slip sections. Apply waterproof caulk around the perimeter of
the collar to provide
_a
proper seal.
Figure 13
STORM COLLAR
For more information,
1
1
isit wwmtfcsatech.com
