CERESIT CM 77 ULTRAFLEX

  • Strong adhesion on all difficult substrates
  • Permanently elastic bond - able to absorb stresses
  • For indoor and outdoor use

Features and benefits

Ready-to-use tile adhesive with ultra high flexibility for critical substrates, to be used also on slightly vibrating surfaces, suitable for indoors and outdoors. For large tiles.

Properties

Description

CERESIT® CM 77 is an ultra flexible ready-to-use tile adhesive suitable for indoor and outdoor use that ensures a reliable and firm bond even on the most difficult substrates like metal, wood, glass, synthetic resins and coatings - usually without a primer. With sound-dampening properties. Perfectly suited for the most challenging applications, such as large tiles and slabs outdoors. Available pack size: 8kg

Documents and downloads

How to use

CERESIT Tiling CE60 LP Instructions Illustration Step 1

SUBSTRATE PREPARATION FOR APPLICATION OF CERESIT CM 77

CERESIT CM 77 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.

CERESIT Tiling CE60 LP Instructions Illustration Step 2

APPLICATION OF CERESIT CM 77

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. 

CERESIT Tiling CE60 LP Instructions Illustration Step 3

DRYING AND CLEANING OF CERESIT CM 77

CERESIT CM 77 is a silane-based adhesive and cures by contact with moisture (air humidity). To fasten the hardening process the adhesive layer should be sprayed with a thin water film. Attention! Tools and tile surfaces cannot be cleaned with water - pre-clean the tools and surfaces with a dry cloth. Fresh adhesive residues can be removed with alcohol, oil or paint thinner; hardened material can only mechanically be removed. 

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

Suitable for ceramic tiles and slabs, marble, artificial stones (agglomerated stones), natural stone slabs, clinker, porcelain, glass tiles and glass mosaic etc.

CERESIT CM 77 can be used for installing tiles and slabs on heated or cooled floor constructions.

Use CERESIT CM 77 only in dry conditions and at temperatures of +5 °C to +35 °C. The optimum ambient and material temperature is 23 °C and 50 % relative humidity. At low temperatures, we recommended bringing the adhesive up to temperature before application.