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Product Information
Technical Datasheet
Safety Datasheet


ARDEX-FLEX FS is a cement-based grouting compound with excellent flexible and water repellent properties, without the need to add a separate admix.


  •  Available in 35 colours*
  •  No colour variation or streaking during mixing
  •  Water repellent and dirt resistant
  •  Easy to apply and clean off the tile surface
  •  Ideal for commercial and domestic environments such as swimming pools, showers and kitchens
  •  For tile joints up to 4mm wide
  •  Suitable for wall tiling, and narrow joints in floors
  •  For internal and external applications, including heated subfloors


The BS EN 13888 classification for ARDEX-FLEX FS is CG2 WA, an “improved cementitious grout with additional characteristics of reduced water absorption and high abrasion resistance”.

ARDEX-FLEX FS is suitable for grouting joints up to 4mm wide, between porcelain, ceramic, non-moisture sensitive natural stone and quarry tiles, as well as extruded tiles and glass block- work. The hardened grout is weather resistant, unaffected by water, and can be used for internal and external tiling in dry and wet locations, including swimming pools with non-aggressive water conditions.

ARDEX-FLEX FS can be applied to both wall and floor tile joints and can receive foot traffic after 5 hours at 20°C.

Where chemical spillages or corrosive liquids are likely to be in contact with the tile joints, use either ARDEX WA Epoxide Adhesive and Grout or ARDEX EG 8 PLUS Epoxide Adhesive and Grout.