Mapetape BB is a butyl-based, waterproofing sealing tape for use with MAPEI peel-and-stick, crack-isolation membranes. Mapetape BB has an extremely aggressive grip and superior long-term adhesion, ensuring immediate sealing upon contact. It is reverse-rolled for easy, fast application. A clear release liner on one side allows for easy handling and dry-fitting. Mapetape BB is compatible with Mapeguard 2, Mapesonic 2, Mapesound 90 and Mapeguard CI membranes.