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 ARDEX K 521

​Self-Leveling Concrete Topping with Aggregate Surface​​​​​​​​​​​​

​ARDEX K 521™ is a pourable, polishable, self-leveling topping for fast-track resurfacing of indoor concrete. ARDEX K 521 can be installed from a minimum thickness of 3/8" (9 mm) up to a maximum thickness of 2" (5 cm).  Use ARDEX K 521 to provide a polished, “aggregate-exposed” surface. Polishing can proceed in as little as 24 hours.

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  • A blend of Portland cement, hydraulic cements and specialty aggregate
  • Resurface indoor concrete
  • Walk on in 2 - 3 hours, polish in as little as 24 hours
  • Use for interior floors only


 Technical Data Reference


 Material Safety Data Sheets