• Bonding all types and sizes of ceramic tiles (double-red, single-red, porcelain, clinker, terracotta, etc.) on interior and exterior substrates.
• Bonding all types of mosaic on interior and exterior surfaces, also in swimming pools.
• Bonding stone tiles on interior and exterior surfaces (as long as the stone material is not sensitive to moisture and staining).
• Bonding large format porcelain tiles, also thin porcelain tiles on floors, specifically on large surface areas: due to the high back-buttering capacity, the formation of voids between the substrate and the tile is limited.
• Bonding on interior and exterior walls, including exterior facades.

Some application examples:

• Bonding ceramic tiles (porcelain, clinker, double-red, single-red, etc.), ceramic and glass mosaic, stone tiles (as long as not sensitive to moisture) and thin and large format porcelain tiles on the following substrates:
  • Self-levelling compounds and screeds (including heated);
  • Precast concrete walls (free of release agent residues);
  • Stable and cured concrete floors;
  • Cementitious render and lime-mortar render;
  • Gypsum-based render (after the application of an acrylic primer such as Primer G or Eco Prim T Plus);
  • Plasterboard, walls made of fibre cement panels, precast wall panels;
  • Mapeguard Board, multi-purpose construction panels;
  • Mapelastic Smart, Mapelastic AquaDefense, or Mapegum WPS waterproofing membranes;
  • Waterproofing and uncoupling, anti-fracture, membranes from the Mapeguard range.
• Installing existing floors (ceramic, marble, etc.) and after priming with Eco Prim Grip.
• Installing tiles on marine plywood, particleboard, existing wooden floors (as long as they are stable) and after priming with Eco Prim Grip.
• Installing ceramic and natural stone tiles in balconies, terraces, at roofs subject to direct sunlight and or temperature swings.
• Installing tiles in swimming pools and tanks.

Do not use Ultralite S1 Flex in the following cases:

• On concrete that has not been thoroughly cured;
• On metal, rubber, PVC and linoleum substrates.
• For slabs of marble and natural stone subject to effoorescence or staining.
• For natural or agglomerate stone subject to moisture expansion.
• When the floor surface must be set to foot traffic quickly.
• Once the mix has started to set. Do not add more water.

• 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.