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Ardex Arditex NA 2-Part Ultra Rapid Setting Levelling And Smoothing Compound 20kg

by Ardex

Brand Ardex

20kg Bag & 4.85kg Bottle

Coverage: Approximately 5m² at 3mm thick per unit

Unaffected by moisture

Install floorcoverings after 4 hours

Suitable for use on floors with underfloor heating

Product Code Price Quantity

£36.29 INC VAT

£30.24 EX VAT

Work out how much you need

Using the calculator below, you can work out how much material you will need to get the job done. Please either enter your required area m2 or the width and length.

This is a rough guide calculation provided in good faith, actual usage may vary, please allow for wastage when placing your order. Flooring Materials Ltd can't be held responsible for any under ordering.


ARDITEX NA Levelling and Smoothing Compound saves you both time and money by removing the need for intensive preparation and priming. Its renowned versatility and advanced site tolerance reduces preparation machinery hire costs, lost time and callbacks, helping to ensure that with ARDITEX NA, there really is no alternative.

  • Apply direct to most substrates without priming, including old adhesive residues and bitumen, flooring grade plywood, ARDEX Damp Proof Membranes and even direct to ceramic tiling
  • Unaffected by moisture and can be used directly over damp concrete
  • Install floorcoverings after 4 hours and ceramic tiles after 3 hours
  • Walk on after 2 hours
  • Convenient bag and bottle mix with no measuring or water required
  • Advanced performance, even at lower temperatures
  • Suitable for use with underfloor heating
  • Suitable for Marine use

20kg Powder & 4.85kg Latex

Coverage: Approximately 5m² at 3mm thick per unit

Install floorcoverings after 4 hours, and ceramic tiles in as little as 3 hours

Can be used with confidence over old adhesive residues including bitumen

Excellent adhesion without priming to almost all substrates, including flooring grade plywood, ARDEX Damp Proof Membranes and even ceramic tiles

Unaffected by moisture, can be used under an ARDEX Damp Proof Membrane and direct to damp concrete

Feather edge to 12mm in one application

Apply up to 30mm incorporating ARDEX Coarse Aggregate

Suitable for use on floors with underfloor heating


Coverage: Approximately 5m² at 3mm thick per unit

Final Set (Vicat): 1.30 hours

Compressive Strength:
After 28 days: 16 N/mm²

Flexural Strength:
After 28 days: 5.5 N/mm2

Indentation Resistance:
24 Hours: 15N/mm²
7 days: 25N/mm²

Typically floorcoverings range between 0.5 - 6N/mm²
NOTE: 1N/mm² is the equivalent to approximately100 Tonnes/m²

Approximate Application 

  • 2mm Thickness: 7m²
  • 3mm Thickness: 5m²
  • 5mm Thickness: 3m²
  • 8mm* with ARDEX Aggregate: 3m²
  • 10mm* with ARDEX Aggregate: 2.3m²

*For application thicknesses, 8mm and above ARDEX Coarse aggregate will improve coverage, see mixing instructions.

ARDITEX NA – Cementitious screed material for use internally in buildings.