Help determining roof material

Not sure if I’m looking at PVC or TPO. Some serious lack of flashing at the chimney.



Any help would be greatly appreciated.
Thanks!

I would just narrate “_____” type of roofing…blah, blah, blah.

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So, if you look very closely, PVC has a woven or fabric type texture or appearance. Often more noticable where there is UV damage or wear.

Otherwise, you will have to follow @lkage advice and describe an unknown rolled material consistent with TPO or PVC