Mapei Isolastic 097125

WHERE TO USE

ISOLASTIC + KERABOND, KERABOND T and KERABOND PLUS

For interior and exterior bonding of:

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

• stone material as long as it is dimensionally stable.

ISOLASTIC DILUTED WITH WATER AT A RATIO OF 1:1 + ADESILEX P10

Bonding on internal and external floors or vertical surfaces of glass or ceramic mosaic on paper or mesh backings, even heavy ones.

Some application examples

ISOLASTIC + KERABOND, KERABOND T or KERABOND PLUS

• Ceramic tiles over underfloor heating installations.

• Ceramic tiles and stone material for exteriors (swimming pools, balconies, terraces).

• All types of ceramic tiles, including slim tiles on façades.

• Ceramic tiles on precast concrete walls (load-bearing panels, precast bathrooms, walls in “tunnel” systems, etc.).

• Ceramic tiles on old flooring (ceramic, marble, terrazzo, wood, etc.).

• Ceramic tiles on asphalt screeds or substrates.

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

• Large-sized tiles.

• Ceramic tiles on surfaces waterproofed with product for the Mapelastic range. ISOLASTIC DILUTED 1:1 WITH WATER + ADESILEX P10

• Laying glass or ceramic mosaic on non-absorbent surfaces (Mapelastic, Mapegum WPS, tiles, etc.).

• Laying glass or ceramic mosaic in swimming pools, storage tanks, etc., or even on absorbent surfaces.

• Laying glass or ceramic mosaic on deformable surfaces (plasterboard panels, reinforced cement, cement fibre, wood or derived materials, provided they are well fastened).

TECHNICAL CHARACTERISTICS

Isolastic 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, Kerabond T, Kerabond Plus or Adesilex P10 mixed with Isolastic must never be used for:

• installing stone slabs subject to moisture movement;

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

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

• installing on metal, rubber, PVC, and linoleum surfaces;

• at temperatures lower than +5°C or higher than +40°C.

In dry, hot climates, the open time of an adhesive made by mixing Isolastic into Kerabond, Kerabond T, Kerabond Plus or Adesilex P10 is shorter. A skin may form on the surface, which must then be removed and fresh adhesive applied.

APPLICATION PROCEDURE

Preparing the substrates All substrates receiving Kerabond, Kerabond T, Kerabond Plus or Adesilex P10 + Isolastic must be flat, mechanically strong, free from loose parts, grease, oil, paint, wax, etc. Precast concrete elements or in situ concrete 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 in warm weather 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 made with the special MAPEI binders for screeds such as Mapecem, Mapecem Pronto, Topcem or Topcem Pronto. Surfaces that are too hot due to exposure to direct sunlight should be cooled by dampening them with water. Gypsum substrates and anhydrite screeds must be perfectly dry sufficiently hard and free from dust. They must always be treated with Primer G or Eco Prim T. Areas subject to extreme damp must be primed with Primer S. As a general rule, refer to the relative MAPEI technical documentation about substrate preparation before repairing cracks in substrates, consolidating rapid-drying screeds and levelling off installation surfaces.

Mixing ratio The mixing ratio is determined by the degree of deformability required of the adhesive: use Isolastic as a complete substitute for water when a highly deformable adhesive (class S2 according to EN 12004) is required, e.g for substrates subject to strong size variations such as concrete structures with less than 6 months curing, for large size tiles or slabs or for those subject to considerable sudden temperature changes.

Isolastic diluted 1:1 with water may be used when a deformable adhesive is required (class S1 according to EN 12004), for example on moderately unstable substrates, cured concrete substrates, etc.

Preparing the mix

When Isolastic is used in dilution with water, thoroughly blend part of Isolastic with a small amount of clean water first. Pour the powder into the liquid and continuously stir the mix with a slow speed mechanical stirrer until it becomes a smooth paste free of lumps. Let the mix stand for a few minutes and, after further stirring, proceed with the application.

Spreading the mix

Apply the adhesive on the substrate using a notched trowel. Use a trowel with a notch size which guarantees adequate buttering. To get good adhesion, spread an initial thin layer of the adhesive mix on the substrate using the smooth side of the trowel, then immediately apply another layer of adhesive to the thickness required using the notched part of the trowel. Use a trowel suitable for the type and format of the tiles to guarantee that the backs of the tiles are adequately buttered.

Installing the tiles

Follow the recommendations shown in the technical data sheet of the adhesive with which Isolastic is mixed. However, greater attention should be paid to the open time which, in the equivalent relative temperature and humidity conditions, will be slightly shorter than the open time of the basic product.

N.B. When installing on external surfaces, in storage tanks and swimming pools, large-sized tiles or flooring to be polished after installation, we recommend spreading a layer of adhesive also on the back of the tiles to guarantee perfect contact and that there are no voids or gaps.

GROUTING AND SEALING

Wall joints can be grouted after 4-8 hours and floor joints after 24-36 hours with the 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 becomes very difficult, but can be helped with a solvent such as white spirit.

PACKAGING

25 and 5 kg drums and 1 kg packs.

STORAGE

Isolastic can be stored for 24 months in the original packing. Protect from frost.

SAFETY INSTRUCTIONS FOR PREPARATION AND APPLICATION

Isolastic is not hazardous according to the regulation standards on the classification of mixtures. It is recommended to wear protective gloves and goggles and to takethe usual precautions for handling chemical products. For further and complete information about the safe use of our product please refer to the latest version of our Material Safety Data Sheet.

PRODUCT FOR PROFESSIONAL USE.

WARNING

Although the technical details and recommendations contained in this product data sheet correspond to the best of our knowledge and experience, all the above information must, in every case, be taken as merely indicative and subject to confirmation after long-term practical application; for this reason, anyone who intends to use the product must ensure beforehand that it is suitable for the envisaged application. In every case, the user alone is fully responsible for any consequences deriving from the use of the product.

LEGAL NOTICE

The contents of this Technical Data Sheet (“TDS”) may be copied into another project-related document, but the resulting document shall not supplement or replace requirements per the TDS in force at the time of the MAPEI product installation.

ANY ALTERATION TO THE WORDING OR REQUIREMENTS CONTAINED OR DERIVED FROM THIS TDS EXCLUDES THE RESPONSIBILITY OF MAPEI.