Vent stack on metal roof

[Daniel Leung]

These two photos of vent stacks are taken from a 20-year metal roof. No EPDM boot flashing is used. Are they acceptable?

[Scott Patterson]

These two photos of vent stacks are taken from a 20-year metal roof. No EPDM boot flashing is used. Are they acceptable?

Nope! A special metal roof flashing boot is made for this type of roof.
This is a link to one company that makes them.
Thalermetal.com: Department: 'Unknown Department' (http://www.partsdome.com/thalermetal/dept.asp?dept%5Fid=1523&ShopperCurrency=USD#deptname)