Dektite Premium - Black EPDM Solar 5 to 55mm External Pipe Dimensions The flashing solution for pipes through metal roofs. Description Perfect for flashing pipes on metal roofs. The multi-application flashing in a highly durable EPDM or silicone, edged with a flexible aluminium band, flashes hot or cold flues and pipes on metal roofs. The square base fits any prepared hole on most roof profiles. Suitable for a roof pitch between 0 and 45 degrees. Suits external pipe dimensions between 5mm and 55mm. Base size: 139mm x 139mm. Black and Grey EPDM flashings are used with standard pipes where heat is not an issue. Can be used with pipes up to 115C constant and 150C intermittent. Red silicone can be used with hot pipes and can be used with pipes up to 200C constant and 250C intermittent.