Buy & Ardex S 21 Rapid Setting Floor Tile Bedding Mortar Grey 22kg Online

ARDEX S 21 is a special rapid hardening pourable bedding mortar for floor tiles in internal and external locations. It is especially suitable for fixing large tiles, ceramic and brick pavers, terrazzo tiles and natural stone etc.

The BS EN 12004 C1 F designation for ARDEX S 21 classifies the adhesive as a “fast-setting cementitious adhesive”. Tiles bedded in ARDEX S 21 can be grouted and subjected to loads 3 hours after fixing at normal temperatures. It is particularly suitable for use in situations where the tiling has to be grouted and put into use shortly after bedding, or where low temperatures would unduly extend the setting time of normal cement-based adhesives. ARDEX S 21 is a grey powder based on special cement, high-quality synthetic resins and fillers, which is mixed with water to produce an easily applied mortar with a working time of approximately 30 minutes. The mortar adheres strongly to cementitious bases such as concrete, cement/sand screeds etc. The use of ARDEX E 90 admix is recommended when fixing large flat-backed tiles and smooth-backed, dense and fully vitrified ceramics, porcelain, vitreous mosaics etc. The inclusion of ARDEX E 90 will enable tiles to be fixed to concrete or cement/ sand screeds with underfloor heating.