Once we had the pipe extension connected we figured out where the new vent pipe would need to pass through the roof using a piece of scrap wood held flush with the pipe.
How to put vent pipe through metal roof.
Measure on the panel where exactly the pipe will be located and make a mark.
Determine the type of vents you wish to install.
But it truly is rewarding.
From up on the roof use a jigsaw or reciprocating saw to cut a 4 in.
Position the vent pipe up to the bottom of the roof.
With the pipe in a vertical position trace around the pipe using a pencil.
How to install vents on a metal roof step 1.
Here are a few tricks that really will help if you.
Trim the flashing in the center of the rubber boot with a roofing knife so it fits snugly around the pipe.
Where the scrap wood hit the understructure of the roof we drilled a hole straight through to the outside.
Prepare the roof area.
Slide the rubber boot over the pipe to check the fit.
The penetration will be oval to have a round pipe exit vertically through a pitched roof you need an oval hole in the roof.
Leave the drill bit sticking through the roof so you can find the hole.
Step 2 run a tape measure over the diameter of the pipe and add 1 2 to 3 4 inch to that before making the cut.
This will involve determining the placement of the vents.
Install the panels leading up to the vent pipe until getting as close as possible to the pipe.
Trace the outline of the base of the rubber boot onto the metal roof with a pencil.
Remove the rubber boot.
Start in the attic and drill a hole through the roof in the desired vent location.
Go into your attic.
This may include the round whirlybird types that are placed.