Mapei Keraflex Maxi S1 C2TE S1 Tile Adhesive

Product Overview

Keraflex Maxi S1 is a grey or white powder-form cementitious tile adhesive containing a high proportion of synthetic resins and special additives. When mixed with water, it forms a pasty mortar with low viscosity and excellent workability. The product is highly thixotropic, allowing application on vertical surfaces without sagging or tile slip. It offers good deformation capability to accommodate differential movement between the substrate and tile covering.

Key Features

• C2TE S1 high-grade classification: Improved cementitious adhesive with S1 deformability (as per manufacturer data)
• Thick-bed application: Can be applied in thick layers without pre-levelling uneven substrates
• Excellent non-slip performance: Suitable for vertical surfaces — even large, heavy tiles will not slide
• Extended open time: Provides ample working time for tile positioning and adjustments
• Flexible deformation: Accommodates differential movement between substrate and tiles
• Interior and exterior use: Suitable for all indoor and outdoor environments
• Low Dust technology: Reduces dust emission during mixing for a cleaner working environment

Applications

• Interior and exterior bonding of glazed, unglazed, porcelain, klinker, and terracotta tiles
• Interior and exterior natural stone installation (stone must not be moisture-sensitive)
• Direct tiling on uneven substrates without pre-levelling
• Tile-over-tile renovation on existing ceramic or stone floors
• Floor tile installation subject to heavy traffic
• Tiling in poorly ventilated areas or near residential buildings where dust must be minimised
• Tile installation on waterproofed substrates
• Interior and exterior bonding of tiles with highly profiled ribs or lugs
• Spot-bonding of insulation and sound-deadening panels indoors

Packaging

• 25 kg bags (grey and white)

Important Notes

• Not suitable for wood or wood-based substrates
• Not suitable for metal, rubber, PVC, or linoleum substrates
• Not suitable for marble or natural stone prone to efflorescence or staining
• Not suitable for natural or artificial stone subject to moisture-related movement
• Not suitable for precast concrete or substrates subject to strong movement
• 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

Is Keraflex Maxi S1 suitable for large format tiles?

Absolutely. Keraflex Maxi S1 is specifically designed for large format tiles and natural stone, with non-slip performance and thick-bed capability that make it ideal for installing large, heavy tiles.

Can Keraflex Maxi S1 be used outdoors?

Yes. This product is suitable for both interior and exterior environments, including facade cladding and outdoor floor tiling.

How much does Mapei Keraflex Maxi S1 cost?

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