CERESIT® CM 25 is especially recommended for laying glass mosaics or tiles where a uniform substrate colour is wanted - but also for the discoloration-proof fixing of bright and translucent marble and other natural stone slabs, using the thin-bed method. CM 25 is well suited for application of different kind of tiles (ceramics, fine stoneware, natural stone) and agglomerate slabs on critical substrates.Available pack size: 25 kg.
CERESIT CM 25 adheres to all clean, solid, load-bearing, even, dry and moist substrates, which are free from substances which can reduce adhesion. Uneven areas or depressions should be levelled before. Coatings of insufficient load-bearing strength must be removed. Gypsum/anhydrite or paint coats (not chalking, good adhesion) must be mechanically roughened and freed from dust.
Pour the content of the packaging into the measured amount of clean, cool water and mix it with a drill mixer until a homogenous mass without lumps is obtained. It is necessary to wait for 5 minutes (maturing time) and then mix it once again. If necessary, carefully add water until the desired consistency is achieved.
The adhesive should be applied with a suitable notched trowel, depending on the respective tile size. For indoor use, the mortar coverage (contact area) at the back of the tile must be at least 65 %. For outdoor use, a minimum mortar coverage of 90 % is required (combined laying method should be used i.e. additionally apply a thin layer of the mortar on the tile backside). CERESIT CM 25 is fast setting - keep in mind the shortened skin formation time and pot life compared to normal setting tile adhesive.
CERESIT CM 25 is used for bonding glass mosaic, glass tiles, ceramic tiles and slabs, fine stoneware and insulation boards as well as for the discoloration-proof fixing of bright and translucent marble and other natural stone slabs on critical substrates, using the thin- and medium bed method.
For use on heated screeds, balconies, terraces and facades, especially on young precast concrete members (at least 3 months old).
CERESIT CM 25 contains cement and produces an alkaline reaction with water. Therefore, protect eyes and skin. If contact occurs, rinse thoroughly with water. In case of contact with the eyes seek medical advice immediately.