Mapei Keraflex

£8.86£25.86 exl. VAT

Per Unit



High Performance, High Grab Polymer Modified Cemetitious Adhesive

  • Easily workable
  • Highly thixotropic
  • Perfect adherence to all materials normally used in building;
  • Hardens without appreciable shrinkage
  • No vertical slip
  • Extended open time.

*Please note there is a £100 minimum order when ordering Mapei products.*


Mapei Keraflex – High performance cementitious adhesive

Mapei Keraflex – High performance cementitious adhesive with no vertical slip and extended open time for ceramic tiles and stone material. Keraflex is a grey or white powder composed of cement and graded aggregates. It contains a high quantity of synthetic resins and special admixtures created according to a formula developed in MapeiI’s research laboratories. A mortar with the following features is obtained when mixed with water:

  • Easily workable;
  • Highly thixotropic: Keraflex can be applied on a vertical surface without slumping or letting the tiles slip, even for heavy tiles. Tiles can be installed from the top towards the bottom without using spacer pegs;
  • Perfect adherence to all materials normally used in building;
  • Hardens without appreciable shrinkage;
  • Extended open time.

Mapei Keraflex Uses

Interior and exterior bonding of ceramic tiles (single fired, double-fired, porcelain tiles, terracotta, klinker, etc.) stone materials and mosaics of every type on floors, walls and ceilings. Also suitable for spot bonding of insulating materials such as expanded polystyrene, rock and glass wool, Eraclit® (wood-cement panels), sound-deadening/reduction panels, etc.

Some application examples

Bonding ceramic tiles (double fired, single fired, porcelain, clay tiles, klinker, etc.), stone materials and mosaics on the following substrates:

  • Cement or mortar wall renders;
  • Interior aerated concrete block walls;
  • Gypsum or anhydrite after having first applied Primer G;
  • Gypsum board;
  • Underfloor heated installations;
  • Cement screeds, as long as they are sufficiently cured and dry;
  • Interior painted walls, as long as the paint is firmly anchored; Keraflex
  • Waterproofed membranes for Mapelastic or Mapegum WPS line.
  • Tile on tile of existing flooring.
  • Bonding small sized tiles in swimming pools and basins.
  • Bonding floors subject to heavy stress

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Want to see how Mapei Keraflex and other Mapei products have been used? Click here to view a range of Mapei Projects.

Additional information


White, Grey


5Kg, 20Kg

Suitable for Substrates

Minimum Thickness: N/A

Maximum Thickness: 15mm

Compressive Strength @ 28 days: N/A

Walkable: 24 hours

Grouting: 18-24 Hours

Suitable for Substrates: Concrete / Screed / Insulation



Since its beginnings in 1937 Mapei has grown so that it can now claim to be the worlds largest producer of adhesives and chemicals for the construction industry. The company has always believed in investing strongly in R&D and product development, and it is perhaps this more than anything that has led to their success. Mapei has been in the UK since 1989 with a manufacturing plant now producing over 100,000 tonnes across a vast product range.

Technical Information