Mapei Keraquick S1 Tile Adhesive, Grey, 20 Kg *CLEARANCE*

SKU id16155 Non Hazardous
A rapid set, flexible S1 adhesive, that is high performance, fast setting, non-slip cementitious adhesive for the installation of tiles.
Available in 20 Kg in Grey
£16.07 (£19.28 Inc VAT)

Product Description

Mapei Keraquick S1, Grey, 20 Kg is a rapid set, flexible S1 tile adhesive, that is high performance, fast setting, non-slip cementitious adhesive for the installation of ceramic, porcelain and stone tiles and mosaics.

Best Uses

Mapei Keraquick S1 is suitable for bonding to cement-based and calcium sulphate based screeds, concrete, plywood overlay, existing unglazed ceramic floor tiles, cement-based renders, gypsum plaster, plasterboard, tile backer boards.

  • For interior and exterior use.
  • For the installation of ceramic and porcelain tiles and mosaics. For natural stone not sensitive to moisture.
  • Suitable for the installation of glass tiles and mosaics. Mix with Latex Plus where the glass has a coating on the rear.
  • For the installation of insulating materials such as expanded and extruded polystyrene panels, gypsum boards, glass and rockwool, Eraclit®, aerated concrete blocks, sound deadening panels.

Best used for renovation in heavily trafficked areas and where surfaces need to be quickly back in service, such as public buildings, motorway services, pedestrian walkways, supermarkets, showrooms, airports etc. Also suitable for the rapid installation or renovation in swimming pools, industrial plants (breweries, wine cellars, dairies etc.), refrigeration units. Suitable for the rapid installation in bathrooms, showers, kitchens, conservatories and on balconies and terraces. Installation of tiles externally in autumn/winter where night time temperatures drop below +5ºC is possible. Suitable for the installation of tiled finishes to underfloor and undertile heating systems.


Substrates must be dry, flat, mechanically strong, sound, free from loose areas, grease, oil, paint, wax, old flooring adhesive and bitumen residues and any other contamination (e.g. plaster droppings), which may affect the adhesion. Damp substrates may lengthen Keraquick S1’s setting time. Cementitious substrates must be cured and any shrinkage process must be at an end before tiles are installed. Renders should be cured for at least 2 weeks, concrete at least 6 weeks old, cement based screeds for at least 3 weeks unless they have been produced using the special MAPEI binders Mapecem or Topcem or with a preblended screed mix such as Mapecem Pronto or Topcem Pronto. The substrate surface should ideally be open textured. Powerfloated concrete should be mechanically abraded (scabbled or shot-blasted) to open up the surface and to remove any curing agents. Heated screeds must be commissioned in accordance with recognised technical
regulations and the guidelines given in BS 5385 parts 4 and 5. The commissioning process must be carried out before the installation of tiles or stone finishes.
Gypsum plaster should be at least 4 weeks old and primed with Primer G. Note: over-trowelled plaster surfaces should be lightly abraded to provide a key before priming. Calcium sulphate screeds must be dry to a moisture content of 0.5% w/w when measured using the carbide method. All surface laitance must be removed
by mechanical abrasion and all dust thoroughly removed by vacuum. Prime the surface with Eco Prim T (diluted 1:2 with water) or alternatively Primer G. Plasterboard and tilebacker boards must be installed to provide a firm, stable substrate with no protruding fixings. Plywood must be a minimum of 15 mm thick and screw fixed at
maximum 200 mm centres on walls and 300 mm centres on floors. It should be of class 3 in accordance with EN 314 and EN 636. Steel substrates must be well braced to provide a deflection free support. Remove all rust, mould oil, grease and other contamination. Apply a skim / scratch coat of Keraquick S1 mixed with
Latex Plus and allow to set, then fix the tiles in a void free bed of the same product.

A 20 kg bag of Keraquick S1 grey should be mixed with about 4.8-5.2 litres of water. Alternatively mix a 20 kg bag of grey or white with 6 kg of Latex Plus. Where other bag sizes are used, mix at a ratio of 1 kg powder to 0.25 litres of water or 0.3 litres Latex Plus. Pour clean water (or liquid) into a clean mixing bucket. Add Keraquick S1 powder and mechanically stir until a homogenous, lumpfree paste is achieved. Allow the mix to stand for 2 minutes then briefly stir again. Use the mix within 30 minutes of preparation.

Apply the prepared Keraquick S1 to the substrate with a notched trowel to a maximum of 10 mm thick. To achieve good adhesion to the substrate, first apply a skim coat of adhesive over the substrate using the flat edge of the trowel followed by combing through with the notched edge of the trowel to the required thickness.
Ensure that a minimum coverage of 65-70% to the back of the tile is achieved in dry wall areas with 100%, as far as possible, in wet walls areas, on floors and in exteriors (walls and floors). Ensure that a trowel with a notch size and profile appropriate to the size of tile is used. For demanding applications such as exterior tiling subject to freezing, swimming pools or water feature installations, heavy duty areas, floor tiling to be ground in situ, when installing tiles with deep recesses or lugs on the rear and for fixing large format tiles (> 300 x 300 mm), the adhesive should also be applied to the rear of the tile (back buttering).

For the installation of tiles greater than 600 x 600 mm we recommend the addition of Latex Plus to Keraquick S1. On highly absorbent substrates it is recommended to prime with e.g. Primer G and Eco Prim T before commencing tiling.

Do not wet the tiles before installation; if, however, the backs are very dusty, they should be dipped in clean water. Allow to dry before fixing. Keraquick S1’s open time in normal temperature and humidity is about 15-20 minutes; unfavourable weather conditions (strong sun, drying wind, high temperature), or a highly absorbent substrate may shorten this open time, sometimes quite drastically, to just a few minutes. Constantly check to see whether the adhesive has formed a surface skin.