Heatilator • Caliber CNXT Series • 4047-132 Rev T • 09/08
46
G. Install Metal Roof Flashing
Note: Skip to Section I if using the RF4-8.
• See minimum vent heights for various pitched roofs
(Figure 10.15) to determine the length of pipe to extend
through the roof.
• Slide the roof
fl
ashing over the pipe sections extending
through the roof as shown in Figure 10.16.
Horizontal
overhang
12
X
20 in.
(508 mm)
Lowest
Discharge
Opening
Termination
Cap
Roof Pitch
is X / 12
Vertical
wall
H (min.) - Minimum height
from roof to lowest
discharge opening.
24 in. min.
(610 mm)
Roof Pitch
H (Min.) Ft.
Roof Pitch
H (Min.) Ft.
Flat to 6/12
1.0*
Over 11/12 to 12/12
4.0
Over 6/12 to 7/12
1.25*
Over 12/12 to 14/12
5.0
Over 7/12 to 8/12
1.5*
Over 14/12 to 16/12
6.0
Over 8/12 to 9/12
2.0*
Over 16/12 to 18/12
7.0
Over 9/12 to 10/12
2.5
Over 18/12 to 20/12
7.5
Over 10/12 to 11/12 3.25
Over 20/12 to 21/12
8.0
* 3 ft. minimum in snow regions
Storm Collar
Roof
Flashing
Figure 10.15 Minimum Height From Roof To Lowest Discharge
Opening
NOTICE:
Failure to properly caulk the roof
fl
ashing could
cause water entry.
• Caulk the gap between the roof
fl
ashing and the outside
diameter of the pipe.
• Caulk the perimeter of the
fl
ashing where it contacts the
roof surface. See Figure 10.16.
Caulk
Pipe
Flashing
Figure 10.16
