Mapei Keralastic T Polyurethane Adhesive

Description

Mapei Keralastic T Polyurethane Adhesive
– 10kg Tub

 
Mapei Keralastic T Polyurethane Adhesive is a high-performance two-
component polyurethane adhesive for ceramic tiles and stone material. It is
suitable for indoor and outdoor applications involving the bonding of wall and
floor ceramic tiles, stone material, mosaics, etc.

 

Where to Use

Indoor and outdoor, bonding of wall and floor ceramic tiles, stone material,
mosaics, etc. on:

• screeds,
• renders,
• concrete,
• asphalt,
• wood,
• metal,
• PVC,
• reinforced polyester,
• fibre-cement,
• gypsum,
• gypsum board,
• gypsum panels, etc.

 

Application Examples

• Bonding ceramic tiles, stone material and all types of mosaics in
  showers and on sheets used for
  prefabricated bathrooms.
• Bonding ceramic tiles and mosaics on wooden work surfaces or in kitchens
  in order to achieve a waterproof substrate.
• Bonding ceramic tiles, stone material and mosaics on balconies, external
  terraces, domes or flat roofs subject to foot traffic.
• Bonding natural stones and reconstructed stone (marble of every type,
  slate, etc.) also subject to movement and size variation due to the absorption of
  water (class C of size stability according to MAPEI standards).
• Bonding ceramic tiles and stone material on surfaces subject to
  vibrations and deflections.

 

Technical Characteristics

• Keralastic T is a two-component, solvent and water free adhesive which
  is flexible and waterproof. It is made up of a polyurethane base (component A) and
  a special hardener (component B).
• On mixing the two components together, the result is a paste with the
  following properties:

• good workability;
• excellent durability and resistant to ageing;
• perfect adhesion to all surfaces used in building;
• hardens by chemical reaction without shrinkage (until it becomes highly
  resistant);
• high deformability;
• in the case of Keralastic T, highly thixotropic: it can be applied
  vertically without slump and without letting even heavy or large tiles slip. The
  slipping strength is in compliance with EN 1308.

 

Recommendations

• Do not use on very damp surfaces or where there is a risk of rising
  damp.
• The packs are pre-measured, therefore mixing errors are impossible.
• Do not use partial quantities. A wrongmixing ratio could cause damage
  during the curing process.
• Use the products in temperatures between +10°C and +30°C.
• In case of use on surfaces subject to continuous immersion in water,
  consult the MAPEI Technical Services Department beforehand.
• Do not use Keralastic and Keralastic T to bond transparent glass
  materials.
• We advise against using these products on particulary porous or light
  coloured natural stones to bond such
  materials, use Ultrabond Eco PU 2K.

 

Application Procedure

• REFER TO TECHNICAL DATA SHEET PDF (See Documents and Media)
  

 

Tile Installation

• Tiles must be absolutely dry.
• Apply firm pressure to the tiles to ensure good contact and covering of
  the back.
• If the layer of fresh Keralastic T is also to act as a waterproofing
  membrane, make sure that any ribs and lugs do not go through the layer.
• If Keralastic T is used for installing onto particularly deformable
  substrates, all coverings larger than 5×5 cm must be installed with wide joints.
• The open time of Keralastic T under normal temperature and humidity
  conditions is approximately 50 minutes.
• Any adjustment must be carried out within 90 minutes from installation.
• The setting time is strictly tied to the ambient temperature (see table
  below).
• Setting time of Keralastic T in relation to the temperature:

Temperature (°C) – Time (hours)
30ºC – 2 hours
25ºC – 3 hours
20ºC – 6 hours
15ºC – 8 hours
10ºC – 20 hours

 

Grouting and Sealing

• Joints between the tiles can be grouted after 12 hours with the
  appropriate MAPEI cementitious or epoxy grouts, available in a variety of 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 approx. 12 hours.

 

Ready for Use

• Surfaces are ready for use after approx. 7 days.

 

Cleaning

• Tools, buckets and clothes can be easily cleaned with alcohol before
  hardening sets in.
• Hardened Keralastic T can be cleaned mechanically or with Pulicol 2000.

 

Consumption

Bonding of ceramics and stone material:

• Mosaics and small size tiles (trowel No. 4): 2.5 kg/m²
• Normal size tiles (trowel No. 5): 3.5 kg/m²
• Large size tiles, marble, stones (back buttering): 5 kg/m²

 

Packaging

Keralastic T are available in double metal drums of

• 10 kg (9.4 kg/m² component A + 0.6 kg/m² component B);
• 5 kg (4.7 kg/m² component A + 0.3 kg/m² component B).

 

Storage

• Keralastic T is stable for at least 24 months when stored in sealed
  drums.
• Component B (hardener) must be stored in warm place to avoid
  crystallisation during cold weather (at least at +10°C).
• Should crystallisation occur, re-dissolve by warming before use.

 

Safety Instructions

• Keralastic T component A is an irritant for eyes and skin, both
  components A and B may cause sensitisation if they come into contact with the skin
  of those predisposed.
• Keralastic T component B is corrosive, may cause serious burns and is
  harmful if swallowed.
• During use wear protective gloves and goggles and take the usual
  precautions for handling of chemicals.
• If the product comes in contact with the eyes or skin wash immediately
  with plenty of water and seek medical attention.
• Furthermore, Keralastic T component A is hazardous for aquatic life.
• Do not dispose of these products in the environment.
• 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