ARDEX K 55 Fast 20Kg

£27.32£1,240.00 exl. VAT

Per Unit


• Walkable in 30 minutes and ready to receive floorcoverings in as little as 60 minutes
• Exceptional flow and levelling characteristics
• Rapid hardening and superior levelling performance combined with a 10 minute working time
• Exceptional coverage – over 6m2 at 2mm thick.
• Apply from a feather edge to 10mm in a single application

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ARDEX K 55 Fast 20Kg Ultra Rapid Hardening and Rapid Drying Smoothing and Levelling Compound

ARDEX K 55 FAST is an advanced subfloor smoothing compound with rapid hardening properties, specifically designed for areas where the installation time of floor finishes must be kept to a

When mixed with water, an exceptionally fluid, self levelling mortar is produced which can be applied from a feather edge up to the required thickness in a single operation (maximum 10 mm).

Dependent on substrate and application thickness, ARDEX K 55 FAST 20Kg can normally be walked on after approximately 30 minutes at 20oC. Once the ARDEX K 55 FAST layer has hardened and dried sufficiently and the adhesive trowel does not damage the mortar surface, the floorcovering may be installed in as little as 60 minutes for applications less than 3mm thick. Please choose the correct type of adhesive for reduced thicknesses below 3 mm.

For ultra rapid flooring applications the use of ARDEX AF 2575 PLUS will allow the application of the floorcovering even if the ARDEX K 55 FAST 20Kg appears damp, providing that the ARDEX K 55 FAST surface is sufficiently hard so as not to be damaged by the adhesive trowel.

NOTE: Following installation the floor must not be subjected to heavy or moving loads for at least 48 hours.

Additional information


20Kg Bag, 25 x 20Kg Bags, 50 x 25Kg Bags



For more than 60 years, ARDEX has been a quality leader for the flooring and tiling industries, the brand of choice for installers and distributors. ARDEX today is still an independent family-owned business. This means that in our permanent efforts to achieve market-shaping innovations, we have been able to retain our most important tradition: uncompromising quality. This is something we guarantee by applying the latest rigidly enforced quality assurance procedures, making it no coincidence that they are regarded as a premium partner of the construction industry. Strong internal growth and intelligent acquisitions in foreign markets have put the Group on the map with 53 subsidiaries and 3,000 employees on all continents. With its 14 major brands, the ARDEX Group generated a worldwide annual turnover in excess of 770 million euros in 2018. This marks an important milestone and they are becoming one of the world’s leading suppliers of high-quality specialist building materials.

Technical Information