We stock a solid range of EPDM membranes and EPDM adhesives manufactured to industry standard by manufacturers such as Tremco illbruck, Adshead Ratcliffe Arbo and Sika. Ready for fast despatch from our warehouse in North-East London. Used widely in the waterproofing industry, EPDM or ethylene propylene diene monomer is a type of synthetic rubber, is an elastomer which is characterized by a wide range of applications. The M refers to its classification in ASTM standard D-1418; the M class includes rubbers having a saturated chain of the polymethylene type. Dienes currently used in the manufacture of EPDM rubbers are dicyclopentadiene (DCPD), ethylidene norbornene (ENB), and vinyl norbornene (VNB). EPDM rubber is closely related to ethylene propylene rubber (ethylene propylene rubber is a copolymer of ethylene and propylene whereas EPDM rubber is a terpolymer of ethylene, propylene and a diene-component).