Mapei Keralastic T R2T PU Tile Adhesive

Product Overview

Keralastic T is a two-component reaction adhesive composed of a polyurethane base (component A) and a special hardener (component B). When mixed, it forms a paste with excellent workability, durability, and ageing resistance. The product cures by chemical reaction without shrinkage, achieving very high bond strength with high deformation capability. Keralastic T is highly thixotropic, allowing vertical application without slumping or tile slip.

Key Features

• R2T high-grade classification: Improved reaction adhesive with non-slip properties (as per manufacturer data)
• Flexible and waterproof: Forms a flexible waterproof layer when cured, providing both bonding and waterproofing
• Solvent- and water-free: Suitable for moisture-sensitive substrates and stone materials
• Superior bond strength: Perfect adhesion to all building materials
• High deformation capability: Accommodates differential movement between substrates and coverings
• Shrinkage-free curing: Chemical reaction curing ensures stable bonding
• Non-slip: Suitable for vertical surfaces — even large, heavy tiles will not slide
• Wide substrate compatibility: Bonds to concrete, wood, metal, PVC, asphalt, gypsum board, and more

Applications

• Interior and exterior wall and floor bonding of ceramic tiles, stone, and mosaics
• Shower and prefabricated bathroom tile installation (with simultaneous waterproofing)
• Tile bonding on wooden worktops or kitchen counters (creating a waterproof substrate)
• Tile and stone installation on balconies, terraces, and flat roofs
• Natural stone installation (including stones subject to moisture-related size variation)
• Tile and stone bonding on surfaces subject to vibrations and deflections
• Tile renovation over existing ceramic, marble, or other flooring
• Tile or stone installation on metal structures

Packaging

• 5 kg and 10 kg double metal drums (pre-measured A + B components)

Important Notes

• Not suitable for very damp substrates or areas with rising damp
• Components are pre-measured — do not use partial quantities; incorrect mixing ratios may affect curing
• Not suitable for bonding transparent glass materials
• Not recommended for porous or light-coloured natural stone (use dedicated products for those)
• Ensure substrates are fully cured, structurally sound, clean, and dry before application
• For detailed application methods, coverage rates, and technical parameters, please refer to the official product data sheet

FAQ

Does Keralastic T provide waterproofing?

Yes. When cured, Keralastic T forms a flexible waterproof layer that provides both bonding and waterproofing simultaneously — ideal for showers and kitchen countertops.

Can Keralastic T be used on wooden substrates?

Yes. Keralastic T is water-free and suitable for bonding tiles on wood, metal, PVC, and other substrates where traditional cementitious adhesives cannot be used.

How much does Mapei Keralastic T cost?

Please WhatsApp us for the latest pricing. We offer in-store pickup in Mong Kok and delivery across Hong Kong.