Use the flashlight to look for water marks on your roof s underside.
How to install metal roofing around vent pipes.
Run a tape measure over the diameter of the pipe and add 1 2 to 3 4 inch to that before making the cut.
Continue the next row of shingles cutting a hole for the vent pipe.
Slide the rubber boot over the pipe to check the fit.
Apply a second layer of sealant around the lip of the vent outside.
A quick step by step guide on how to flash a metal roof.
Go up the attic armed with a flashlight.
Install shingles as normal up to the base of the plumbing vent.
Take care the first piece is aligned precisely perpendicular square to the edge.
In this video i cover installing a roof boot for a vent pipe in a metal roof.
The metal i m using is called crinkle black i purchased all my materials at h.
Use the flashlight to trace it up to its highest point.
How to flash a metal roof.
Use some asphalt roof cement under the cut shingle and around the vent pipe as shown in figure 2.
Add the metal panels.
Record those measurements on a notepad.
Trim the flashing in the center of the rubber boot with a roofing knife so it fits snugly around the pipe.
Using the tape measure determine the size of the cut into the roof that will be necessary to insert the vent into the space.
Place the flashing or boot onto the plumbing vent so the base is resting on shingles.
Measure the body of the vent.
Bring some chalk for marking purposes.
How to overcome vent pipes when putting on a metal roof step 1.
Installing a roof plumbing vent is typically an easier task than flashing a chimney.
Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm.
Here s how to check for a roof leak.
Install the panels leading up to the vent pipe until getting as close as possible to the pipe.
Here is how you do it.
Always begin working at the point with the longest peak to eave distance.
Figure 2 cut shingle to fit over vent pipe.
Find the mark that shows the flow of water.
Place the cover over the vent opening and screw into place.
Metal roof flashing installation.
Remove the rubber boot.
Trace the outline of the base of the rubber boot onto the metal roof with a pencil.
Apply the last row of shingles that is just below the vent pipe as shown in figure 1.
Remember to allow for the lip on the vent mechanism that will fit over the opening and rest on the surface of the roof.
Drill starter holes if needed then scew down the vent with the fasteners in the installation kit.