ARDEX K 39

Extended Workability, High Flow Levelling and Smoothing Compound

With its extended wet edge, fresh applications of ARDEX K 39 can be easily smoothed into existing pre-applied material for up to 40 minutes after application, making it ideal for complicated areas, adjoining rooms and large areas where pumping is require. Furthermore, the use of ARDEX K 39 eliminates the need to ‘rub down’ the adjoining mixes the following day.

  • Workable wet edge of up to 40 minutes
  • Excellent coverage – 7.4m2 at 2mm thick
  • Rapid hardening - walkable in as little as 2 hours
  • Spike rolling not always necessary
  • Highly versatile – apply from 1.5mm

Unit Size Available: 22kg

Coverage: Approximately 7.4m2 at 2mm thick per 22kg unit

Watch the ARDEX K 39 Application Video

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Tile adhesive
Notch size / bed thickness
Area to be covered

How much will I need?

The number of kg required = kg
The number of units required for your project = units.

The calculation above indicates the approximate number of units required, and does not allow for site conditions or wastage

Select product
Depth mm
Area to be covered
Select product
Depth mm
Area to be covered
Select product
Depth mm
Area to be covered

The calculator below will tell you how large an area a unit of the selected grout will cover, based on the dimensions that you supply. Simply enter the required figures in the boxes below and view the results in the results box.

Tile Dimensions Grout
Length (mm)
Breadth (mm)
(check joint width)
Joint Dimensions
Width (mm)
Depth (mm)

All tile and joint dimensions are rounded up to the nearest number (no decimal points).


Results - based on figures and product chosen above.
Result kg per square metre. Therefore:
a kg unit will cover -

How many unit(s) will I need?

Enter the area of your project here: m²   
The number of kg unit(s) required for your project =

The calculation above indicates the approximate number of units required, and does not allow for site conditions or wastage