Selden Aluminium base EPDM pipe flashing for pitched roofs. A durable flashing solution for pipes through slate and tile roofs, Dektite Seldek Aluminium won't corrode or stain your roof and gutters. The EPDM (Ethylene Propylene Diene Terpolymer) cone is a highly durable synthetic rubber roofing membrane that is trimmed to fit on-site and ingeniously locked to a high-grade and malleable 99.9% pure aluminium base. The pitched design of the flashing delivers a less-distorted cone when fit to a steeper pitch.