BBA Certification awarded General News, Product Related, Company Specific 1st March 2017 It’s official! Obex receive BBA certification for our EPDM Membrane System. We are now the only company in the UK that has their EPDM System BBA approved. Request a copy of our certificate now! Our entire EPDM Membrane System is certified for weather tightness, air barrier continuity, resistance to damage and durability. This range will save you time where it matters! Browse our certified EPDM range online