Mapei Isolastic 50 097525

Isolastic 50 is a latex to be mixed with Kerabond, Kerafloor and Adesilex P10 to improve their performances and deformability to meet the requirements of class C2 (improved cementitious adhesive) according to EN 12004 and those of class S1 according to EN 12002.

WHERE TO USE

ISOLASTIC 50 + KERABOND For interior and exterior bonding of:

• ceramic tiles of every type (double fired, single fired, grès, klinker, glass mosaic, porcelain tiles, etc.);

• stone material and large size of tiles.

Some application examples

• Exterior installation of ceramic tiles and stone materials (façades, swimming pools, balconies, terraces).

• Ceramic tiles onto precast concrete panels (prefabricated bathrooms, wall in tunnel prefab system).

• Ceramic tiles onto existing floors (ceramic, marble, terrazzo, timber, etc.).

• Ceramic tiles onto cement based and asphalt based screeds.

• Ceramic tiles onto deformable substrates (gypsum-board cement board, panels, reinforced concrete, etc.).

ISOLASTIC 50 + KERAFLOOR

For interior and exterior bonding of:

• large-size ceramic tiles;

• ribbed klinker tiles, cotto toscano, stone slabs etc. needing layers of adhesive thicker than 5 mm;

• ceramic tiles on substrates with irregularities up to 15 mm.

Some application examples

• Ceramic tiles and stone material in exteriors (façades, swimming pools, balconies, terraces), also on deformable substrates.

• Large-size ceramic floor tiles laid on underfloor heating installations.

ISOLASTIC + ADESILEX P10

For interior and exterior floors and walls bonding of front and reverse side installation of normal or heavy weight glass, marble and ceramic mosaic.

Some application examples

• Bonding mosaic in swimming pools on renders or on substrates waterproofed with Mapelastic.

• Internal bonding of mosaic on non absorbent surfaces such as existing ceramic tiles, cementitious substrates waterproofed with Mapegum WP, etc.

• Bonding glass mosaic on external façades onto concrete or render

TECHNICAL CHARACTERISTICS

Isolastic 50 is a very fluid, pinkish-white liquid composed of a water dispersion of an extremely elastic polymer which, when mixed with cement based adhesives, improves adhesion to all substrates, deformability and impermeability, once hydration has taken place.

RECOMMENDATIONS

Kerabond, Kerafloor and Adesilex P10 mixed with Isolastic must never be used for:

• installing stone slabs subject to deformation from moisture;

• installing marble or natural stone subject to efflorecenses or staining from moisture;

• installing tiles in reservoirs, swimming pools or refrigeration rooms that need to be put in service quickly;

• installing on metal, rubber, PVC and linoleum substrates.

In hot and dry climates the adhesive obtained by mixing Isolastic 50 with Kerabond, Kerafloor or Adesilex P10, has a short open time with the formation of a surface skin which must be removed by re-trowelling.

APPLICATION PROCEDURE

All substrates must be flat, sound, cured, free of loose particles and clean. Precast concrete elements or cast in situ must be cured for at least 3 months in favourable weather conditions. Cementitious substrates must not be subject to shrinkage once the tiles have been installed, therefore renders should be cured at least one week per centimetre of thickness. Cementitious screeds must have an overall cure of at least 28 days unless they have been mades with the special MAPEI binders such as Mapecem, Mapecem Pronto, Topcem, Topcem Pronto. Gypsum substrates and anhydrite screeds must be perfectly dry (maximum residual moisture 0,5%), sound and free from dust. They must absolutely be treated with Primer G or Mapeprim SP. Areas subject to extreme damp must be primed with Primer S.

Mixing ratio

Kerabond + Isolastic 50: mix a 25 kg bag of Kerabond with approx. 8.5 kg of Isolastic 50.

Kerafloor + Isolastic 50: mix a 25 kg bag of Kerafloor with approx. 7.5 kg of Isolastic 50.

Adesilex P10 + Isolastic 50: mix a 25 kg bag of Adesilex P10 with approx. 9.0 kg of Isolastic 50.

Preparing the mix

Pour the powder into Isolastic 50 and continuously stir the mix with a slow speed mechanical stirrer until it becomes a smooth paste free of lumps. Let the mix sit for a few minutes and after a further stirring, proceed with the application.

Applying the mix

Apply the mix on the substrates with a notched trowel. Choose the trowel that transfers the adhesive to at least 65-70% of the back of the tiles for walls and floors set to light foot traffic in interiors and 100% coverage for heavy traffic areas outdoors. To obtain a good adherence, first apply a thin coat of the mix onto the substrates using the flat side of the trowel, then immediately after apply the desired thickness of the mix using the appropriate notched trowel according to the type and size of the tiles.

Installing the tiles

The same recommendation as set for the adhesive with which Isolastic 50 is mixed. However great attention should be paid to open time which, in the equivalent and relative temperature and humidity condition, will be slightly shorter than the open time of the basic product.

N.B. With exterior applications, in swimming pools, reservoirs, large sizes (over 400 cm2), or floors to be polished in situ, it is advisable to spread a layer of adhesive on the back of the tiles as well, so as to ensure perfect contact and the absence of voids. Always be careful about the formation of the surface skin. It is advisable never to work in temperatures below +5°C or above +40°C.

GROUTING AND SEALING

Wall joints can be grouted after 4-8 hours and floor joints after 24-36 hours with special MAPEI cementitious or epoxy grouts, available in different colours. Expansion joints must be sealed with the special MAPEI sealants.

SET TO LIGHT FOOT TRAFFIC

Floors are set to light foot traffic after 24-36 hours.

READY FOR USE

Surfaces are ready for use after approximately 14 days. Basins and swimming pools can be filled after 4 weeks. Cleaning Tools can be cleaned using plenty of water before the adhesive begins to set. After setting, cleaning become very difficult, but can be helped with a solvent such as white spirit.

PACKAGING

Isolastic 50 is available in 25 kg drums.

STORAGE

Isolastic 50 can be stored 24 months in original packaging. Protect from frost.

SAFETY INSTRUCTIONS FOR THE PREPARATION AND APPLICATION

Isolastic 50 is not considered as hazardous according to ruling norms on the classification of these mixtures. It is however recommended to take the usual necessary precautions for handling chemical products. The Safety Data Sheet is available upon request for professional users.

FOR PROFESSIONALS

WARNING

While the indications and guidelines contained in this data sheet correspond to the company's knowledge and wide experience, they must be considered, under all circumstances, merely as an indication and subject to confirmation only after long-term, practical applications. Therefore, anybody who undertakes to use this product, must ensure beforehand that it is suitable for the intended application and, in all cases, the user is to be held responsible for any consequences deriving from its use.