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A 46 is a rapid setting and hardening, slump free mortar which is ideal for external or internal repairs. The mortar sets and hardens rapidly to give a repair of exceptional strength and hardness. The mixed mortar sets after 20 minutes and can be trafficked after only two–three hours at 20°C. A 46 is ready to receive floor coverings that are not sensitive to moisture, such as ceramic tiles, after 24 hours at 20°C.


  • For infilling holes around fittings and for patch work on wall and floor areas.
  • Internal and external use.
  • Rapid hardening – walkable in two–three hours.
  • For repairing stair treads and risers.
  • To produce gradients for ramps.
  • To smooth wall and floor areas from 2–30 mm thick.
  • Easy to smooth and float.
  • Stress and crack free.
  • Wearing surface in lightly trafficked areas.
  • Ideal for patch repairs prior to the application of suitable damp proof membranes.
  • Freeze, thaw and salt resistant.
  • Suitable for underfloor heating.

Technical properties:

  • Compressive strength (after 1 day/ 7 days/ 28 days): 10.0/ 15.0/ 20.0 N/mm².
  • Tensile bending strength (after 1 day/ 7 days/ 28 days): 2.0/ 4.0/ 6.0 N/mm².

Related literature

The following content references this product:

NBS Specification

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This product is associated with the following NBS Create clause:
45-55-50/350 Repair mortar for concrete

Product specification

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+44 (0)1440 714939

Product reference

ARDEX A 46 Multi-Purpose Repair Mortar

Manufacturer details

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