CERESIT® CL 69 ULTRA-TIGHT is crack-bridging, 3-layered waterproofing and uncoupling membrane. It is a trouble-free alternative to liquid-applied waterproofing products for the composite waterproofing of balconies and terraces and wet rooms. It ensures rapid work progress. Due to its uncoupling effect, CL 69 is suitable for the installation of ceramic tiles and slabs on critical substrates as well as for the removal of tile coverings. Available size: 30 x 1 m roll
The substrate must be solid, dry, clean and free of substances that may impair adhesion. A few isolated cracks in the screed do not cause a problem as long as the crack edges are level. Before applying the CL 69 membrane, pipe penetrations as well as wall and floor connections (gullies etc.) should be waterproofed with the pre-fabricated CERESIT system components.
Place the CERESIT CL 69 membrane on the floor and cut it to size using a cutting knife and scissors. Comb a certified CERESIT tile adhesive onto the prepared substrate using a notched trowel (notch size 4 mm). Place the membrane into the adhesive bed within the open time of the adhesive.
After installing the membrane on wall areas, ceramic tiles and slabs can be fixed directly without any waiting time or further priming coat.
Concrete and lightweight concrete, cement screeds, anhydrite screeds, mastic asphalt screeds, dry screeds, heated floor constructions, existing ceramic coverings, plasterboard, gypsum fibre boards, fully jointed masonry, plaster and masonry binder, cement plaster, lime cement plaster, gypsum plaster, foam boards.
Can be used indoors for wall and floor; can only be used outdoors for flooring. For sealing of wall and floor surfaces under ceramic tiles and, natural stone in bathrooms, showers, swimming pools and wet rooms.
Apply at temperature from +5 °C to +35 °C. Protect from frost! Protect from direct sunlight.