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Mark P

Numbers on EPDM

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I'm wondering if the a date can be obtained from these numbers on an EPDM roof covering? If not a date do they tell us anything useful?

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Different mind set. I typically see 45 mil.

I hunt for the stamp with the manufacturer's name and call them to date the material. Typically it's encrypted. I typically see Carlisle products and occasionally a Firestone roof.

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