Schluter Systems Kerdi Band KEBA100/125/300 Waterproofing Strip 5?x984? Roll New in OEM Packaging Kerdi-Band is a waterproofing strip for sealing butt joints and floor/wall connections with Kerdi and Ditra membranes and Kerdi-Board panels. It is installed with unmodified thin-set to ensure a fully water-tight seal to prevent leaks. The 4 mil thickness of Kerdi-Band helps prevent build up under the tile. Designed to seal and waterproof joints and floor/wall connections in Kerdi, Ditra and Kerdi-Board installations 4 mil thickness prevents build-up beneath the tile Roll is 5-in wide Roll length is 984-ft 3-in Ensures a fully water-tight seal preventing leaks and mold growth Adheres tightly to inside and outside corners without rounding at surface transitions