The RADBAR multi-purpose Butyl tape is a double sided tape used for jointing membranes, detailing ancillaries such as pipe penetrations and DPC's. RADBAR tapes can be used for joining membranes and DPC's as an alternative to welding. Use with Radbar Single Sided Overlap Tape to fully bond membranes, Ideal for jointing and mating gas barriers, damp proof membrane and other plastic sheeting.