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ARDEX A 55 is an ultra rapid drying levelling and smoothing compound designed for use where speed is essential for renovation and repair work to internal sub-floors prior to floor finishes being laid.

Walkable and ready to receive floorcoverings in as little as 60 minutes. Priming is rarely required on prepared concrete and sand/ cement screeds.

An ARDEX A 35 screed smoothed with ARDEX A 55 can be installed and smoothed in as little as 4 hours.

ARDEX A 55 Can be applied from a feather edge to 10 mm in a single application.

Ideal for floors with underfloor heating.


From feather-edge to 10 mm in a single application. For thicknesses greater than 10 mm, aggregate should be added.

  • Limitations: ARDEX A55 is limited to 10 mm thick on ARDEX P82 primer. This is reduced to 6 mm on ARDEX P82 when onto ARDEX DPM/ ARDEX DPM 1C/ ARDEX DPM 1CR.

Related literature

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Not generally required except in the following cases:

  • Anhydrite screeds and very porous surfaces: ARDEX P51 primer is recommended to prevent air bubbles rising from the base and reducing the flow properties of the compound.
  • Smooth, non absorbent sub-floors e.g. epoxy resin coatings: ARDEX P82 primer is recommended.

– ARDEX P51:

  • Aqueous synthetic based dispersion primer and bonding agent used to prepare internal surfaces to receive cement-based levelling compounds, adhesives or screeds.

– ARDEX P82:

  • Two-part water based synthetic dispersion primer and bonding agent used to form a priming/ bonding layer on most substrates, particularly smooth or dense surfaces.
  • ARDEX P4 - Solvent free rapid drying primer, applied to concrete, screeds, terrazzo and ceramic tiles and can be used externally.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-55-10/380 Quick drying levelling screed mix

Product specification

An important note about specifying





+44 (0)1440 714939

Product reference

ARDEX A 55 Ultra Rapid Drying Levelling and Smoothing Compound


[Not required]
[P51 primer]
[P82 primer]
[P4 primer]
[Contractor's choice]

Manufacturer details

Homefield Road,
Suffolk, CB9 8QP
Tel +44 (0)1440 714939
Fax +44 (0)1440 716667
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