CERESIT CM 25 NATURAL STONES - FLEXIBLE

  • White & very fine-grained structure
  • Faster hardening, flexible consistency
  • For thin natural stones and glass & fine mosaic

Features and benefits

White, flexible tile adhesive for outdoor installation of thin natural stones and glass & fine mosaic.

Properties

Description

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.

Documents and downloads

How to use

CERESIT Tiling CE60 LP Instructions Illustration Step 1

SUBSTRATE PREPARATION FOR APPLICATION OF CERESIT CM 25

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.

CERESIT Tiling CE60 LP Instructions Illustration Step 2

MIXING OF CERESIT CM 25

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. 

CERESIT Tiling CE60 LP Instructions Illustration Step 3

APPLICATION OF CERESIT CM 25

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. 

Related how to guides

  • Premium Tiling System
    Providing Tiling Solutions
  • Laying Large Tiles
    Laying Large Tiles
  •  Preparation – testing the substrate
    Preparation – Testing The Substrate
  • Terraces, balconies and patios
    Terraces, Balconies And Patios
  • Bathrooms & Kitchens
    Bathrooms & Kitchens
  • Swimming & Wellness
    Swimming & Wellness
  • Tiling In Industrial Buildings
    Tiling In Industrial Buildings
  • Solutions For Special Formats & Substrates
    Solutions For Special Formats & Substrates
  • Heated floor systems
    Heated Floor Systems
  • Sound-reduction / Decoupling System
    Sound-reduction / Decoupling System

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Frequently asked questions

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.