Features and Benefits

Premium, flexible  tile adhesive  with high adhesive strength for all kind of tiles on difficult substrates


  • Highest adhesion strength and flexibility
  • Safe application even in extreme conditions
  • Resistant to substrate deformations on balconies, terraces and on heated floors
  • High load resistance
  • For critical substrates (e.g. tile-on-tile)
  • For pools and wet areas
  • For large format tiles (> 1m), porcelaine and natural stone
  • For indoor and outdoor use

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Ceresit CM 17 SUPER FLEXIBLE tile adhesive is designed for laying ceramic, cement and stone tiles (except marble) on deformable substrates. Its characteristics guarantee a flexible connection with the substrate and transmission of squeezing stresses between tiles and the substrate. Therefore, CM 17 SUPER FLEXIBLE is recommended for laying tiles on thin partition walls, heated floors, elevations, terraces, balconies, pool basins and technological water reservoirs.

Step by step

Substrate preparation

CM 17 SUPER FLEXIBLE 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 (see Ceresit Flooring and Interior Finishes products). 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.
Before applying CM 17 SUPER FLEXIBLE tile adhesive, check the residual moisture of the substrate! Absorbent substrates should be primed with Ceresit primer.
Please refer to the Technical Data sheet!


Pour the content of the packaging into the measured amount of clean, cool water and mixe 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). Fresh excess mortar can be removed with water; hardened material can only mechanically be removed.
Use CM 17 SUPER FLEXIBLEonly in dry conditions and at temperatures of +5 °C to +30 °C.