Ceresit CR 65 1-C Rigid Slurry can be used on the horizontal and vertical surfaces of buildings, structural components, tanks and swimming pools with a water depth of ≤ 10 m. Suitable for the subsequent waterproofing of old buildings or components on the negative side. CR 65 can be applied on rigid, crack-free surfaces made of concrete, brick-work, renders and screeds. CR 65 is perfect to improve concrete surface resistance, even having different concrete qualities and structures. CR 65 passed the tests according to EN 1504-2 standard. Can be used as well as final layer on substrates without mechanical impact. Ceresit CR 65 is a part of Ceresit cementitious slurries range with [Hydroslide Effect] (https://www.ceresit.com/en/innovations/hydroslide.html) .