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Mapei Isolastic – Bulk Buy – Latex additive to impart elasticity to cementitious adhesives

Mapei

Mapei Isolastic

Isolastic is a type of latex mixed with Kerabond, Kerabond T, Kerabond Plus and Adesilex P10, undiluted

Mapei Isolastic is a latex additive to be mixed with Kerabond Plus to improve the performance and deformability to satisfy class C2 S2 (improved cementitious adhesive and class S2 (highly deformable adhesive) according to AS ISO 13007 requirements. Adhesives obtained this way are suitable for interior and exterior bonding of all types of ceramic tiles (double-fired, single-fired, quarry tiles, klinker, terracotta, glass mosaics, porcelain tiles, etc.) and stone material on conventional substrates, on concrete, precast concrete panels as long as well cured (3 months), heating panels, fibrous cement, plaster board and wood or wood composition panels as long as they are firmly fixed. Installations can be carried out over gypsum-based or anhydrite surfaces only if specifically primed beforehand.

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£25.88 +VAT

£25.88 +VAT
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Mapei Isolastic extended information

CONSUMPTION

ProductConsumption (kg/m2)
powderMapei Isolasticwater
Mosaic and small tilesKerabond/Kerabond T/ Kerabond Plus + Isolastic2 - 30.7 - 1-
Kerabond / Kerabond T / Kerabond Plus / Adesilex P10 + Isolastic diluted 1: 1 with2 - 30.3 - 0.50.3 - 0.5
Medium-sized tilesKerabond / Kerabond T/ Kerabond Plus + Mapei Isolastic4 - 51.3 - 1.7-
Kerabond / Kerabond T / Kerabond Plus / Adesilex P10 + Isolastic diluted 1: 1 with water4 - 50.6 - 0.90.6 - 0.9
Large-sized tilesKerabond / Kerabond T / Kerabond Plus + Mapei
Isolastic
> 6> 2-
Kerabond/KerabondT/Kerabond
Plus/Adesilex P10 + Isolastic diluted 1 : 1 with water
> 6> 1> 1

Mapei Isolastic Technical data

Mixed with Mapei Kerabond Plus:

Pot lifeover 8 hours.
Open time30 minutes
Grouting- walls: 4-8 hours
- floors: 24-36 hours
Set to light foot traffic24-36 hours
Ready for useapprox. 14 days
Deformability according to EN 12002S2 - highly deformable
ApplicationKerabond Plus: notched trowel n. 4 or 5 or 6
Storage24 months. Protect from frost.
Consumption1-2 kg/m2

Isolastic is a type of latex mixed with Mapei Kerabond, Kerabond T, Kerabond Plus and Adesilex P10, undiluted or diluted 1 : 1 with water, in order to meet the requirements defined in EN 12004 for the following classifications:

ProductClassification according to EN 12004Description
Kerabond + IsolasticC2ES2High-performance, highly deformable cementitious adhesive with extended open time
Kerabond + Isolastic diluted 1:1 with waterC2ES1High-performance, deformable cementitious
adhesive with extended open time
Kerabond T + IsolasticC2ES2High-performance, highly deformable cementitious adhesive with extended open time
Kerabond T + Isolastic diluted 1:1 with waterC2ES1High-performance, deformable cementitious
adhesive with extended open time
Kerabond Plus + IsolasticC2ES2High-performance, highly deformable cementitious adhesive with extended open time
Kerabond Plus + Isolastic diluted 1:1 with waterC2ES1High-performance, deformable cementitious
adhesive with extended open time
Adesilex P10 + Isolastic diluted 1:1 with waterC2ES1High-performance, deformable cementitious
adhesive with extended open time

Where To Use Mapei Isolastic

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 1:1 WITH WATER + ADESILEX P10

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

Mapei Isolastic some example applications

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 facades.
  • 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 products from the Mapelastic range.

MAPEI 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., 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).

MAPEI ISOLASTIC TECHNICAL CHARACTERISTICS

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

RECOMMENDATIONS

Mapei Kerabond. Mapei 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;
  • installation 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 the adhesive made by mixing Mapei 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.

MAPEI ISOLASTIC 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 MAPEl binders for screeds such as Mapecem, Mapecem Pronto, Mapei 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 (maximum residual humidity 0.5%, 0.3% in case of heated screeds) sufficiently hard and free from dust. They must always be treated with Mapei Primer G or Mapei Eco Prim T. Areas subject to extreme damp must be primed with Primer S. On existing floors, remove any traces of grease, wax, dirt, etc. by using specific products or by abrading the surface with a power tool. As a general rule, refer to the relative MAPEl technical documentation about substrate preparation before repairing cracks in substrates, consolidating rapid-drying screeds and leveling off installation surfaces.

Mixing ratio

The mixing ratio is determinated by the degree of deformability required of the adhesive: use Isolastic as a complete substitute for water when a highly deformable adhesive (class $2 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-sized 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.

Mapei Isolastic Mixing ratios:

ProductMixing ratio
Parts in weightKg
Kerabond + IsolasticKerabond : Isolastic = 100 : 338.5 kg of Isolastic per 25 kg bag of Kerabond
Kerabond + Isolastic diluted 1: 1 with water Kerabond T + IsolasticKerabond : Isolastic : water = 100 : 16 : 164 kg of Mapei Isolastic + 4 kg of water per 25 kg bag of Kerabond
Kerabond T + IsolasticKerabond T: Isolastic = 100 : 338.5 kg of Isolastic per 25 kg bag of Kerabond T
Kerabond T + Mapei Isolastic diluted 1:1 with waterKerabond T: Isolastic: water = 100 : 16: 1614 kg of Isolastic + 4 kg of water per 25 kg bag of Kerabond T
Kerabond Plus + IsolasticKerabond Plus : Isolastic = 100 • zz8.5 kg of Isolastic per 25 kg bag of Kerabond Plus
Kerabond Plus + Isolastic diluted 1 : 1 with waterKerabond Plus : Isolastic : water = 100 : 16 : 164 kg of Isolastic + 4 kg of water per 25 kg bag of Kerabond Plus
Adesilex P10 + Isolastic diluted 1: 1 with waterAdesilex P10 : Isolastic : water = 100 : 18 : 184.5 kg of Isolastic + 4.5 kg of water per 25 kg bag of Adesilex P10

Preparing the mix

When Mapei 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 mixer 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. Use the double-buttering technique and spread the adhesive also on the back of the tiles to ensure complete wetting and the absence of gaps, in the following cases: external installations, when installing large-sized tiles, thin tiles, tiles with reliefs on their back, flooring to be polished after installation or subject to high static or dynamic loads, heated
floors or storage tanks and swimming pools.

Installing the tiles

Follow the recommendations shown in the technical data sheet of the adhesive with which Mapei 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.

GROUTING AND SEALING

Wall joints can be grouted after 4-8 hours and floor joints after 24-36 hours with the special MAPEl cementitious or epoxy grouts, available in different colors. 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.

Mapei Isolastic Product Identity

Consistency:fluid liquid
Colour:pinkish white
Density (g/cm3)1.03
pH:5-6
Dry solids content (%):35
Brookfield viscositv (mPa.s):40
EMICODE:EC1 Plus - very low emission

Mapei Isolastic Application Data

Kerabond or Kerabond Plus
or Kerabond T + Mapei Isolastic
Adesilex P10 +
Isolastic diluted 1:1
Mixing ratio:100 - 33100: 36 (18 parts of water and 18 parts of Mapei Isolastic)
Consistencv of mix:verv pastyverv creamy
Colour:grey/whitewhite
Density of the mix (ka/m3)15001450
pH of mix:over 12
Pot life:8 hours8 hours
Application temperature range:from +5°C to +40°Cfrom +5°C to +40°C
Open time:20-30 minutes30 minutes
Adjustability time:approx. 45 minutes45 minutes
Grouting wall joints:after 4-8 hoursafter 4-8 hours
Grouting floor joints:after 24 hoursafter 24 hours
Set to light foot traffic:24 hours24 hours
Ready for use:14 days14 days

Mapei Isolastic Final Performance

Kerabond or Kerabond Plus
or Kerabond T + Isolastic
Adesilex P10 +
Isolastic diluted 1 :1
Tensile adhesion strength (N/mm?): - initial (after 28
days):
- after heating: - after water immersion: - after freeze-
thaw cycles:

2.4
2.5
1.6
1.8
2.1
3.0
1.3
1.4
Resistance to alkalis:excellentexcellent
Resistance to oils:excellent (poor to vegetable oils)excellent (poor to vegetable oils)
Resistance to solvents:excellentexcellent
Temperature when in use:from -30°C to +90°Cfrom -30°C to +90°C
Deformability according to EN 12004:>5 mm
S2 highly deformable
> 2.5
S1 deformable

View other products by Mapei here.

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