Mapei Keraflex S1 - Grey 20kg

Mapei Keraflex Maxi S1 is a high performance, deformable cementitious adhesive with extended open time and no vertical slip, for ceramic tiles. Especially suitable for the installation of large-size porcelain tiles and natural stone. It is suitable for interior and exterior bonding, up to 15mm bed depth, of ceramic tiles on uneven substrates and renders, without having to level before hand.

Key Features

• Low dust
• Suitable for interior and exterior use
• Easily workable
• Slip resistant
• Accommodates irregularities in substrate and tile
• Hardens, even when very thickly applied with minimal shrinkage
• Extended open and adjustability time
• Classification in compliance with EN 12002

Recommended Systems

Mix Keraflex Maxi S1 with clean water until a smooth, lump-free paste is obtained. Leave to rest approximately 5 minutes and re-stir. Use approximately 5.5 litres of water for every 20 kg of powder. Mixed this way, Keraflex Maxi S1 has a pot life of approximately 8 hours. To achieve good adhesion, spread a thin layer of Keraflex Maxi S1 on the substrate using the straight edge of the trowel. Immediately after, apply the desired thickness of Keraflex Maxi S1 using a suitable notched trowel, depending on the type and size of the tiles. For outdoor ceramic tiling, sizes greater than 300x300 mm, floors must be subject to heavy loads, or when applying in swimming pools and basins filled with water, spread the adhesive on the back of the tile (back-buttering) in order to ensure a complete coverage.