Hearth and Home Technologies CNXT4236IT, CNXT4842ILT Install Metal Roof Flashing, Caulk

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 flashing over the pipe sections extending through the roof as shown in Figure 10.16.

		Horizontal
		overhang
24 in. min.	20 in.
	(508 mm)
(610 mm)		Vertical
	Lowest
		wall
	Discharge
Termination	Opening
Cap
Storm Collar		X
		12
Roof
Flashing		Roof Pitch
		is X / 12

H (min.) - Minimum height from roof to lowest discharge opening.

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

Figure 10.15 Minimum Height From Roof To Lowest Discharge Opening

NOTICE: Failure to properly caulk the roof flashing could cause water entry.

•Caulk the gap between the roof flashing and the outside diameter of the pipe.

•Caulk the perimeter of the flashing where it contacts the roof surface. See Figure 10.16.

Pipe

Caulk

Flashing

Figure 10.16

46 Heatilator • Caliber CNXT Series • 4047-132 Rev U • 11/08