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InteriorInterior
Keraflex Maxi S1 (N)
Description

Special high performance, deformable, non-slip grey and white adhesive with extended open time, very low emission of volatile organic compounds, for bonding ceramic tiles and large stone slabs.

Residual GreenHouse Gas emissions measured throughout the life cycle of this product using Life Cycle Assessment (LCA) methodology, verified and certified with EPDs, have been offset for the year 2026 through the acquisition of carbon credits in support of forestry protection projects.

Key Features
  • Zero drop in high thickness.
  • Excellent workability.
  • Deformable.
  • Ideal for installing large formats.
  • High bond strength.
  • High thixotropy.
  • Certified for use in the marine industry.
  • Very low emission of VOC.
  • Residual GreenHouse Gas emissions measured throughout the life cycle of this product using Life Cycle Assessment (LCA) methodology, verified and certified with EPDs, have been offset for the year 2026 through the acquisition of carbon credits in support of forestry protection projects.
Scope of Use
  • Bonding all types and sizes of ceramic tiles up to 15 mm thick (double-red, single-red, porcelain tiles, klinker, terracotta, etc.) on irregular internal and external substrates and render without skimming the surface prior to bonding.
  • Bonding stone on internal and external surfaces (stable stone, not sensitive to humidity).
  • Bonding all types of mosaic on interior and exterior surfaces, also in swimming pools.

Some application examples:

  • Bonding ceramic tiles (double-red, single-red, porcelain, klinker, etc.), ceramic and glass mosaic and stone (if stable in damp environments) on the following substrates:
    • "Damp earth” consistency and self-levelling cementitious screeds and anhydrite screeds (after priming the surface with a suitable acrylic primer such as Eco Prim T Plus);
    • Heated floors;
    • Sound, well cured concrete floors;
    • Cementitious render and lime-mortar render;
    • Gypsum-based render (after the application of an acrylic primer such as Eco Prim T Plus);
    • Plasterboard, walls made of bre cement panels, precast wall panels;
    • Mapeguard Board, multi-purpose construction panels;
    • Waterproofing membranes made from Mapelastic, Mapelastic Smart, Mapelastic Turbo, Mapelastic AquaDefense or Mapegum WPS;
    • Uncoupling, anti-fracture waterproofing membrane such as Mapeguard UM 35 or Mapeguard WP 200.
  • Overlaying ceramic and stone on existing floors (ceramic, marble, etc.).
  • Bonding floors subjected to intense traffic.
  • Bonding ceramic in areas with poor ventilation close to homes where the amount of dust given off must be reduced to a minimum during mixing operations and when moving the bags.
  • Bonding tiles and strips with pro led or hollow backs (porcelain tiles, klinker, single-red, and terracotta) on internal and external surfaces.
  • Installing tiles on precast concrete walls and concrete substrates.
  • Bonding tiles in swimming pools and tanks.
Limitations on Use

Do not use Keraflex Maxi S1 in the following cases:

  • On not sufficiently cured concrete;
  • On wood or wooden conglomerates;
  • On metal, rubber, PVC, and linoleum surfaces;
  • For slabs of marble and natural stone which are subject to efflorescence or staining;
  • With natural stone or composite slabs subject to movements caused by dampness;
  • When floors need to be put back into service quickly. Do not add water to the mix once it starts to set.
Other Performance Attributes
  • Very low emission of VOC.
  • Residual GreenHouse Gas emissions measured throughout the life cycle of this product using Life Cycle Assessment (LCA) methodology, verified and certified with EPDs, have been offset for the year 2026 through the acquisition of carbon credits in support of forestry protection projects.
EPD
Environmental Product Declaration (EPD)
Documents
Safety Data Sheet Keraflex Maxi S1 (N) Grey

Version 2 (2025)

Safety Data Sheet Keraflex Maxi S1 (N) White

Version 2 (2025)

Technical Data Sheet Keraflex Maxi S1 (N)
EPD Keraflex Maxi S1 (N)

Mapei have over 80 years of experience, with innovative quality adhesives, sealants and chemical products and systems for the building industry.

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