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Self-Drying, Trowelable Concrete Underlayment​​​​​​

Fast setting patch for smoothing and repairing indoor concrete floors, ramps and stairways, as well as non-porous substrates such as terrazzo, ceramic and quarry tile, prior to the installation of floor covering.

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Key Features

  • Formulated with a special blend of Portland cement, other hydraulic cements and polymers
  • Ideal for ramping, patching large areas and screeding
  • Rapid setting
  • Fluid consistency for ease of application
  • Mixes with water only - no latex additive necessary
  • Exceptional bond strength


General Priming recommendations:

  • No priming is required over standard absorbent concrete.
  • Over non-porous substrates, use ARDEX P 82™ Ultra Prime.

Packaging: 40-lb. bag (18 kg)


  • 25 ft2 per bag at 1/4'' (2.3 m2 at 6 mm)
  • 50 ft2 per bag at 1/8’’ (4.6 m2 at 3 mm)

Coverage will vary depending on the texture of the surface being smoothed.


  • Install neat up to 1" (25.4 mm)
  • Up to 3" (7.6 cm) with aggregate


  • Most floor covering in as little as 60 minutes
  • Wood flooring or high-performance adhesives,
    such as epoxies or urethanes after 16 hours



  • Initial Set: Approx. 30 minutes
  • Final Set: Approx.  60 minutes

ASTM C109/mod - Air Compressive Strength (Air cure only) - 4,200 psi 
(294.0 kg/cm2) at 28 days
ASTM C348 Flexural Strength - 1,000 psi (70.0 kg/cm2) at 28 days

VOC:    0


 Technical Data Reference


 Safety Data Sheets




 Case Studies