ARDEX K 301™


ARDEX K 301™ Exterior Self-Leveling Concrete Topping is a self-leveling topping and underlayment for fast-track resurfacing and smoothing for exterior and interior applications over concrete and approved, properly prepared, non-porous surfaces, including terrazzo, epoxy coatings and ceramic and quarry tile – on, above or below grade.

Key Features

  • A blend of Portland cements and other hydraulic cements
  • Smooth new or existing concrete and approved non-porous surfaces
  • Install from 1/4″ – 3/4″ (6 – 19 mm) neat and up to 2” (5 cm) with aggregate
  • Walk on in 2 to 3 hours
  • Freeze-thaw resistant
  • Suitable for use in wet areas
  • For commercial, light industrial and residential applications
  • Use for exterior and interior applications
  • Suitable for use under the ARDEX MC™ Moisture Control Systems
  • Can be used as an underlayment prior to installing floor covering


Tested in accordance with ASTM C1708

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