High performance, deformable tile adhesive

  • High bond strength
  • Super flexible – special polymers modified
  • Recommended for applications over existing tiles

Features and benefits

High performance, deformable tile adhesive for indoor and outdoor areas as well as critical substrates.



CERESIT® CM 17 is a super flexible polymer modified cementitious tile adhesive that is used for the installation of: Ceramic tiles and slabs; Earthenware, stoneware, porcelain tiles; Natural and artificial stones (that are not susceptible to staining); Tile over tile; Tiles with <0.3% water absorption. CM 17 provides a flexible adhesive bed, prevents shear stresses, and is used for indoor and outdoor applications on: Walls, floors, dry substrates and calcium sulphate screeds; Balconies, terraces and facades; Difficult and critical substrates such as pre-existing tiles, gypsum, plasterboards, fibre-reinforced plasterboards, and other substrates subjected to tiny movement. Available pack size: 25kg bag.

Documents and downloads

How to use

Surface Preparation

Ceresit CM 17 adheres to all solid, load bearing, clean and dry substrates that are free of substances that reduce adhesion (grease, dirt and dust).
Indoors & Outdoors
– Concrete (having residual moisture ≤2%)
– Cement screeds (without floor heating), plasters, cement and lime plasters (having residual moisture ≤1.5 %)
– Anhydrite substrates (without floor heating and having residual moisture <0.5%) and gypsum substrates (having residual moisture <1%) that are mechanically roughened, dust-free
and primed*
– Aerated concrete (that is dust-free and primed*)
Substrates must not be wet. Cement and concrete screeds must be fully cured prior to application. Any existing dirt, loose debris and coatings shall be mechanically removed. Absorbent substrates should be primed* and left to dry for at least 2 hours. Surface unevenness of up to 5mm can be filled on the previous day using Ceresit CM 17 tile adhesive. * Primed using a suitable primer from Henkel


Pour Ceresit CM 17 into the precisely measured amount of clean cold water (as instructed in the technical data sheet) and mix using a slow speed drill until a homogenous mass without lumps is achieved. Leave for 2 minutes and then mix again. Apply the tile adhesive with a suitable notched trowel on the substrate. The size of the trowel’s teeth depends on the size of the tile. For indoor use, the tile adhesive should cover at least 65% of the tile’s backside. For outdoor uses, the back-buttering method should be followed to cover at least 90% of the tile’s backside. Place the tiles only during the open time of the adhesive. The width of the grouts should be the same and should depend on the size of the tile and exposure conditions. Excess tile adhesive can be removed with water, while hardened material can only be mechanically removed. Grouting on walls and floors can be done approximately after 8 hours and 24 hours respectively. Walkability is achieved after 24 hours. Expansion joints, corner joints and sanitary equipment surroundings shall be filled with a suitable sealant. 


Application should be carried out in dry conditions at an air and surface temperature ranging between 5°C to 40°C. PRODUCT SAFETY: Contains cement. Strong alkaline reaction with moisture, so please protect your skin and eyes. In case of contact, wash immediately with plenty of water. Please seek medical attention in case of contact with eyes. 

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Frequently asked questions

This is a cementitious tile adhesive

For indoor and outdoor applications on walls and floors

C2TES1 as per EN 12004