Using a sawzall cut any roofing nails in the area of the lower mounting plate flush with the sheathing.
How to install a boot on a metal roof.
The aluminum flange on the boot should be pressed down into the large grooves of the roof.
Start with the high seam and install one x inch metal to metal screw.
Next use a reciprocating saw with a rough in blade to cut the out the marked template.
Caulking can be placed at the pipe seal.
In this video i cover installing a roof boot for a vent pipe in a metal roof.
Install remaining screws one inch on center around the perimeter of the pipe flashing.
Make sure that the bottom of the boot is flush with the top of the corrugated roof.
Now slide the boot down and make sure there is enough caulk to have a seamless circle all the way around.
Place the new boot in the hole of the pipe and cut the boot on the line that touches the rim.
The metal i m using is called crinkle black i purchased all my materials at h.
Push the boot over the top of the pipe and push down to the bottom.
After selecting an area to install from inside the building square the template between the roof rafters and outline with a marker.
And begging to caulk around where the boot will go on the roof.
The slide the boot down the pipe and leave it about 3 above the roof.
Install a second screw on the high seam at the opposite end of your first screw.