Step 1:
Measure the Pipe Diameter
Measure the outside diameter of the vent pipe.
Select the correct size ring on the flashing cone that matches the pipe size.
Step 2:
Using scissors or a utility knife, cut along the marked ring on the cone.
Cut slightly smaller than the pipe diameter to ensure a tight seal.
Trim the Cone
Using scissors or a utility knife, cut along the marked ring on the cone.
Cut slightly smaller than the pipe diameter to ensure a tight seal.
Slide the Flashing Over the Pipe
Apply a small amount of soapy water or lubricant to the pipe if needed.
Slide the flashing cone down over the pipe until the base rests on the roof surface.
Step 3:
Form the Base to the Roof Profile
Press the flexible aluminum base down so it conforms to the metal roof panel ribs and corrugations.
Ensure the base sits flat against the roof.
Step 4:
Apply Sealant
Apply a continuous bead of roofing sealant under the base flange to prevent water intrusion.
Step 5:
Fasten the Flashing
Secure the base using self-drilling roofing screws with neoprene washers.
Space screws approximately 1 to 1.5 inches apart around the perimeter.
Step 6:
Seal the Top Edge
Apply a bead of sealant where the cone meets the pipe to ensure a watertight seal.
Step 7:
Final Inspection
Check that:
The flashing sits flush with the roof.
All screws are tight.
Sealant coverage is complete around the base and pipe.
