105 Flashing Membrane is a 105 mil, strong, pliable self-adhesive sheet consisting of high density polyethylene film bonded to a layer of rubberized asphalt waterproofing compound with slit release sheet to conform to 90° angles. 105 Flashing is used in exterior flashing applications to deflect water. Applications include spandrel beams, sills, copings, door and window headers, and flange flashings.