EPDM is a synthetic rubber used in products including roof waterproofing. The abbreviation identifies a material family, not one universal roof assembly. Different products and systems may have their own junction details and conditions of application within the wider construction.
Ask which product and system arrangement a proposal means. A general benefit in a brochure does not prove that the material suits your existing roof without further assessment. Substrate, layers and junctions should be identifiable parts of the selection process.
Keep relevant product information with the components actually used. This site prescribes no adhesive, welding or fixing method and adopts no general lifespan claim. A useful roof dossier describes the specific application rather than merely recording the letters EPDM as the entire specification.
Worth asking
Frequently asked questions
Is EPDM a complete system description?
No. Product variant, assembly and junctions need specification.
Does EPDM automatically suit every substrate?
That should not be assumed. Have the actual substrate and system conditions assessed.