Ardex MRF

Size: Single Bag


ARDEX MRF™ Moisture-Resistant, Rapid-Drying, Skimcoat Patching Underlayment is a trowel-grade underlayment formulated from a blend of Portland cement and other hydraulic cements that provides a smooth surface prior to the installation of ARDEX MC™ Moisture Control Systems or moisture-resistant adhesives and flooring.

Key Features

  • Provides a smooth surface over a variety of substrates
  • Engineered to withstand 100% RH; unlimited moisture and water
  • Interior and exterior use
  • ARDEX WeatherProof Technology
  • Suitable for installation at temperatures as low as 40°F (5°C)
  • Non-sanded – install from a true featheredge up to 1/2” (12 mm)
  • Rapid-drying – install floor coverings in as little as 30 minutes


Mixing Ratio: 1.75 quarts (1.65 L) of water per 10 lb. (4.5 kg) bag For smaller batches, use 3.25 parts powder to 1 part water by volume
Coverage: 28 sq. ft. per bag at 1/8’’ (2.6 sq. m at 3 mm) 56 sq. ft. per bag at 1/16” (5.2 sq. m at 1.5 mm) 200 – 250 sq. ft. (18.6 – 23.2 sq. m) per bag at a skim coat Coverage will vary depending on the texture of the surface being smoothed.

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