Bakor MB Flashing 880-11 Flashing Adhesive is a medium consistency, non-flammable, solvent type, rubberized asphalt adhesive designed specifically for bonding polymer modified asphalt roll roofing membranes.  MB Flashing 880-11 Flashing Adhesive is used as a cold adhesive for bonding flashing layers of sand surfaced polymer modified asphalt sheets as well as for adhering both base and cap sheet flashings.