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Mapei Elastorapid Tile Adhesive S2 Two-Part – Pallet Deals and Bulk Buy


Mapei Elastorapid Tile Adhesive S2

Two-component, high-performance, highly-deformable, quick-setting and drying cementitious adhesive with no vertical slip and extended open time for ceramic tiles and stone material.


  • Pot life of mix: 60-75 minutes.
  • Open time: 30 minutes.
  • Waiting time before grouting: 3 hours.
  • Set to light foot traffic: approx. 2-3 hours.
  • Ready for use: approx. 24 hours (3 days for basins and swimming pools).
  • Deformability according to EN 12004: S2 – highly deformable.
  • Colours: grey and white.
  • Application: N° 4, 5, 6 or 10 notched trowel.
  • Storage: comp. A: 12 months; comp. B: 24 months. Protect from frost.
  • Consumption: 3-8 kg/m².

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£954.40£1,904.00 +VAT

£954.40 +VAT
£1,904.00 +VAT

Mapei Elastorapid Tile Adhesive S2 extended information


  • Mosaics and small-sized tiles (trowel No. 4): 2.5-3 kg/m2;
  • normal-sized tiles (trowel No. 5): 3.5-4 kg/m2;
  • large tiles and external floors (trowel No. 6): 5-6 kg/m2;
  • uneven back faces and substrates, natural stone (trowel No. 10): 8 kg/m2 or more.

Where to use

Bonding to internal and external walls and floors of all types and sizes of ceramic tiles (single-fired, double-fired, porcelain, clinker, terracotta, etc.), natural stone (marble, granite, etc.) and artificial materials which are slightly sensitive to humidity (class B MAPEI dimensional stability standard) which require the use of a fast-drying adhesive.

Mapei Elastorapid application examples

  • Laying ceramic and stone floor coverings which are subject to intense traffic.
  • Quick repair operations where the floor needs to be put into service immediately (public buildings, motorway service areas, supermarkets, airports and pedestrian areas). Compared with other fast-setting adhesives, the longer pot-life of Mapei Elastorapid makes it easier to apply even during hot weather.
  • Laying tiles on deformable substrates: exterior grade plywood, minimum of P5 grade chipboard, old wooden floors, etc.
  • Quick laying or repair of tiled finishes in places such as swimming pools, refrigeration units, industrial plants (breweries, wine cellars, dairies etc.).
  • Laying large-sized ceramic and stone tiles on façades, balconies, terraces, and sun-roofs and patios which are subject to direct sunlight and thermal gradients.
  • Laying tiles in areas subject to high mechanical stresses and vibration (railway underpasses, underground railway platforms, etc.).
  • Laying tiles on concrete substrates and pre-cast walls
  • Laying large-format tiles on heated screeds or on top of existing floor coverings in ceramic, terrazzo, marble, etc.
  • Laying tiles on surfaces waterproofed with Mapei waterproofing systems.
  • Laying stone material which is sensitive to stains (white Carrara, etc.).

Technical Characteristics

Mapei Elastorapid is a two-component adhesive available in grey or white consisting of a special binder and selected silica sand (comp. A) and a synthetic latex rubber (comp. B).
When the two components are mixed together, a mortar with the following characteristics is obtained:

  • low viscosity, therefore easy to apply;
  • highly thixotropic: Mapei Elastorapid may be applied on vertical surfaces without sagging, and even large-sized, heavy tiles do not slip. Tiles may be laid starting from the top of the surface without using spacers;
  • the pot-life of the mix is particularly long compared with other fast-setting adhesives (60-75 minutes), making the laying operation easier even during the summer at high temperatures;
  • good capacity for accommodating deformation of the substrate and tiles (chipboard, exterior grade plywood, concrete, etc.):
  • perfect bonding to all materials normally used in building;
  • thicknesses of up to 10 mm set without shrinkage and without a reduction in thickness, until a considerably high mechanical strength is reached.

Mapei Elastorapid has high bonding strength after only 2-3 hours therefore, floor and wall coverings may be put into service very

Mapei Elastorapid Recommendations

Do not use Elastorapid:

  • on rubber, PVC or linoleum surfaces;
  • with marble or artificial materials which are subject to high levels of moisture movement (green marble, some types of slate and sandstone in the class C MAPEl dimensional stability standard). In this case, use Keralastic, Keralastic T or Kerapoxy.

Do not add water or component B to the mixture that has begun to set.

Application Procedure

Preparation of the substrate

The substrates must be flat, stable, mechanically strong, sufficiently dry and free from loose or crumbly parts, grease, oil, paint, and wax, etc. Damp substrates may slow down the setting of Elastorapid. Cementitious substrates must not be subject to shrinkage after laying the tiles and therefore, during good weather, the substrates must be cured for at least 1 week per centimetre of thickness. Cementitious screeds must be cured for at least 28 days, unless they are made using a MAPEl special binder for screeds such as Mapei Mapecem, Mapecem Pronto, Mapei Topcem or Topcem Pronto.

Dampen with water to cool down surfaces which are too hot due to exposure to direct sunlight. Concrete must be cured for a minimum of 6 weeks.

Gypsum substrates and anhydrite screeds must be perfectly dry ( max. residual moisture 0.5%), sufficiently hard and free of dust. They must be treated with Mapei Primer G or Mapei Eco Prim T Plus.

In general, refer to the relative MAPEl technical documentation regarding substrate preparation before repairing cracks in substrates, consolidating rapid-drying screeds and levelling installation surfaces. Timber floors such as exterior grade plywood and P5 grade chipboard must be securely screw-fixed at a maximum of 300mm centres and free from defection.


Mix 20 kg of grey or white component A (cementitious powder) with 5 kg of component B (synthetic latex rubber). It is best to use a low-speed mechanical mixer to obtain a smooth, homogenous paste by pouring the powder (component A) into the latex (component B). The pot life is approximately 60-75 minutes at +20°C, but higher temperatures may reduce this time considerably. Compared to other fast-setting adhesives, however, the longer open time of Mapei Elastorapid means that it is easier to lay tiles even during hot weather.

Applying the product

To achieve a good bond, first spread a thin layer of Mapei Elastorapid on the substrate using the smooth side of the trowel, and then immediately apply another layer to the thickness required with a notched trowel according to the type and size of the tile. For pieces of mosaic up to 5×5 cm, use a MAPEI No. 4 or 5 trowel (consumption 2.5-3 kg/m2).

For normal ceramic coverings, a MAPEI No. 5 trowel with a rhomboid notch is recommended (consumption 3.5-4 kg/m2) For uneven floors or surfaces or tiles with a ribbed back. a MAPEI No. 6 trowel with a rhomboid notch is recommended (consumption 5-6 kg/m2).

For very uneven surfaces or with large tiles and tiles with large ribs on the back, a MAPEI No. 10 trowel with a square notch is recommended (consumption 8 kg/m2) or a trowel used for Kerafloor (up to 1cm thickness).

For laying ceramic or natural stone on floors externally, tiles with a dovetail or knobbled back, tiles larger than 900 cm2, floor coverings to be polished on site or subject to heavy loads or for swimming pools and water basins, spread the adhesive also on the back of the tile to guarantee full contact. To provide the 100% coverage required for wet service wall areas and all floor tiling it is advised to apply adhesive to the backs of the selected tiles as well as the substrate.

It is not necessary to wet the tiles before laying them. Only when the backs are very dusty it is advisable to dip the tiles in clean water and allow to dry before installing. The tiles must be laid by pressing them down firmly to ensure a good contact with the adhesive.

Under normal climatic conditions, the open time of Elastorapid is approximately 30 minutes. Under unfavourable weather conditions (strong, direct sunlight, wind, high temperature and low R.H.), or if the substrate is very absorbent, the open time may be reduced to only a few minutes. Wetting the substrate before applying the adhesive helps to increase the open time. Check constantly to make sure that the adhesive does not form a surface skin and that it is still fresh. If a surface skin forms, re-spread the adhesive with a notched trowel. Do not wet the adhesive if a surface skin forms. Instead of dissolving the skin, a non-adhesive skin will form. Surfaces tiled with Mapei Elastorapid must not be washed down or exposed to rain for at least 3-4 hours and must be protected from strong, direct sunlight for at least 12 hours.

Grouting and movement joints

The joints between the tiles may be grouted after 3 hours with a suitable MAPEl grout, available in a variety of colours. Expansion joints must be sealed with a suitable MAPEl sealant.


The surfaces may be polished after 24 hours.

Set to light foot traffic

Floors are set to light foot traffic after 3-4 hours.

Ready for use

The surfaces are ready for use after approximately 24 hours Basins and swimming pools can be filled after 3 days.

Mapei Elastorapid technical data

Product Identity

Consistency:grey or white powder
Bulk density (kg/m3):1,250
Dry solids content (%):100
Density (g/cm3):1,035
Dry solids content (%):31

Application data

Mixing ratio:white: component A: 20 kg + part B: 5 kg
grey: component B: 20 kg + part B: 5 kg
Consistency of mix:thick paste
Density of mix (kg/m3):1,650
pH of mix:approx. 11
Application temperature range:from +5°C to +30°C
Pot life:60-75 minutes
Open time (according to EN 1346):≥ 30 minutes
Setting time:120-150 minutes
Time to grouting:after 3 hours
Set to light foot traffic:after 3 hours
Ready for use:after 24 hours (3 days for swimming pools and basins)

Mapei Elastorapid final performances

Bonding strength according to EN 1348 (N/mm2):
- initial (after 28 days):
- after heat ageing:
- after immersion in water:
- after freeze/thaw cycles:

Flexural strength (N/mm2)
- after 28 days:

Compressive strength (N/mm2)
- after 28 days:
Resistance to acids:poor
Resistance to alkalis:excellent
Resistance to oil:excellent
Resistance to solvents:excellent
Service temperature range:from -30°C to +90°C
Deformability according to EN 12002:S2 - highly deformable

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