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124387-01A
14
VENTING INSTALLATION
Continued
Pitch
Slope
Opening
$0D[
Used Flashing
Model No.
Flat
0°
15"
V6F-8DM
0-6/12
26.6°
16
1
/
8
"
V6F-8DM
6/12- 12/12
45.0°
20
3
/
8
"
V12F-8DM
)/$6+,1*,167$//$7,219)'0
259)'0
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base. Secure in position by nailing through
shingles (see Figure 17). DO NOT NAIL
THROUGH FLASHING CONE.
Figure 16 - Roof Opening Measurements
PENETRATING ROOF
To maintain a 1" clearance to pipe on a roof
with a pitch, a rectangular opening must
be cut.
1. Determine center point where pipe will
penetrate roof.
2. Determine center point of roof. Pitch is
the distance the roof drops over a given
span, usually 12". A 6/12 pitch means that
the roof drops 6" for each 12" measure
horizontally down from roof rafters.
3. Use roof opening chart (Figure 16) to
determine correct opening length and
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4. Remove shingles around opening mea-
sured. Cut out this section.
14
3
/
8
"
(36.5 cm)
30"
(76.2 cm)
1"
(2.5
cm)
1"
(2.5
cm)
Minimum Measurements
1"
(2.5 cm)
Opening "A"
Nail Only
Outer
Perimeter
of Flashing
Storm Collar
Flashing
Cone
Underlap Shingles
at Bottom
Overlap
Shingles Top
and Sides Only
Figure 17 - Flashing Installation
Installing Flashing on a Metal Roof
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is required that putty tape be used between
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to roof using #8 x 3/4" screws and then sealed
with roof coating to prevent leakage through
screw holes. A roof coating must also be ap-
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a proper seal.
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Place storm collar over pipe and slide down
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-
ing (see Figure 18). Apply waterproof caulk
around perimeter of collar to provide a proper
seal.
Figure 18 - Storm Collar
Chimney
Pipe
Waterproof
Caulk
Storm
Collar
Flashing