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ARDEX K 900 BF | WPD Group

ARDEX K 900 BF is a cement based underlayment for levelling subfloors prior to the application of a floor finish. Designed with a coarse sand aggregate and minimal flow for the easy and efficient installations of thick layers. It can also be used as a fast set mortar when the water mixing ratio is reduced.


  • Internal concrete slabs
  • For other substrates such as timber, ceramic, terrazzo, steel decking or external applications contact ARDEX technical services


  • Internal


  • A 20kg bag when used with 3L of water will cover 1m2 at 10mm

Drying Times:

  • 90mm layer will harden after approx. 4 hours at 23°C


  • 20kg bag

Additional Products:


Ardex K 900 BF PDS

Ardex K 900 BF SDS

Ardex K 900 BF Spec Sheet