epdm or neoprene

Paul M
steel exposed fastener metal panel roof. use screws with epdm or neoprene washers and why? If there is a clear advantage of one over the other, how should I feel about a metal roof maker that only supplies the other type? pa
Eric Novotny
An informed customer is the Best Customer!
I prefer the EPDM here myself in that comparison. I think they should hold up a bit better in the long term, but that is purely an opinion based on personal observations.

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