TPO vis a vis EPDM

dpb · 2015-10-02T18:49:56+00:00

Anybody here have enough knowledge regarding the two roofing materials to be able to know how to tell apart on an installation? Bkgd: I was certain in my mind that previous replacement used EPDM on both the main church building and the annex when were replaced at the same time by the same firm after a major hail storm back around 2001/2002? We just had another lesser event in duration and amount, but enough 3" and larger to cause severe damage. The insurance adjustor sent out an engineer whose report I've just finished and he's claiming the west (sanctuary) roof is TPO whilst the other is EPDM and I'm thinking that's just plain wrong. It's several miles into to town and I've not got a copy of the original contract here at the house and not sure I can lay hands on (the office closes on Friday afternoon) so iff'en and when I drive to town and climb up there I'd like to know more about what the TPO product actually would look like compared to the EPDM. The identification may not make any difference in the conclusion on need to replace; the conclusion is both were heavily damaged but it might have significant impact on the settlement value I'm thinking??? Anyway, anybody here have experience with commercial-style flat roofing membrane systems?