A different type of flashing is a chimney pipe boot.
Installing metal roof pipe boot.
The slide the boot down the pipe and leave it about 3 above the roof.
Place the new boot in the hole of the pipe and cut the boot on the line that touches the rim.
Instead of having to cut flashing materials yourself you can buy a fitting boot for your chimney pipe.
The metal i m using is called crinkle black i purchased all my materials at h.
In this video i cover installing a roof boot for a vent pipe in a metal roof.
These work better on smaller round chimneys and may be ideal for a stove chimney in a metal roof.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
Install remaining screws one inch on center around the perimeter of the pipe flashing.
Push your pipe flashing firmly into place.
And begging to caulk around where the boot will go on the roof.
Start with the high seam and install one x inch metal to metal screw.