Remember to allow for the lip on the vent mechanism that will fit over the opening and rest on the surface of the roof.
How to install metal roofing around vent pipes.
Trace the outline of the base of the rubber boot onto the metal roof with a pencil.
Metal roof flashing installation.
Drill starter holes if needed then scew down the vent with the fasteners in the installation kit.
Figure 2 cut shingle to fit over vent pipe.
Momentarily lift the boot and apply sealant to hold the flashing in.
Then move into the attic and apply to the underside of the opening and vent.
Figure 1 install shingles just below vent pipe.
Place the cover over the vent opening and screw into place.
Install shingles as normal up to the base of the plumbing vent.
Trim the flashing in the center of the rubber boot with a roofing knife so it fits snugly around the pipe.
Measure the body of the vent.
Bring some chalk for marking purposes.
Use the flashlight to trace it up to its highest point.
Run a tape measure over the diameter of the pipe and add 1 2 to 3 4 inch to that before making the cut.
Here s how to check for a roof leak.
Take care the first piece is aligned precisely perpendicular square to the edge.
Using the tape measure determine the size of the cut into the roof that will be necessary to insert the vent into the space.
In this video i cover installing a roof boot for a vent pipe in a metal roof.
A quick step by step guide on how to flash a metal roof.
Record those measurements on a notepad.
Slide the rubber boot over the pipe to check the fit.
Always begin working at the point with the longest peak to eave distance.
How to overcome vent pipes when putting on a metal roof step 1.
Go up the attic armed with a flashlight.
The metal i m using is called crinkle black i purchased all my materials at h.
Add the metal panels.
Apply a second layer of sealant around the lip of the vent outside.
Install the panels leading up to the vent pipe until getting as close as possible to the pipe.
Apply the last row of shingles that is just below the vent pipe as shown in figure 1.
Remove the rubber boot.
How to flash a metal roof.
Place the flashing or boot onto the plumbing vent so the base is resting on shingles.
Here is how you do it.
Find the mark that shows the flow of water.
Use some asphalt roof cement under the cut shingle and around the vent pipe as shown in figure 2.
Use the flashlight to look for water marks on your roof s underside.