• Economical – Ideal for levelling up to 90mm thick
  • Can be pumped using a suitable Automatic Mixing Pump
  • Strong – Suitable for heavy duty traffic

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