ARDEX DS 20

Uncoupling Mat

ARDEX DS 20 is a uncoupling mat ideal for decoupling tiles, slabs, natural stone and concrete pavers on internal, dry floors up to 2KN/m². ARDEX DS 20 can also be used for the unbonded installation of tiles and slabs in domestic areas, where there is a requirement to avoid damage to the existing subfloor.

  • Uncoupling fleece mat for the installation of tiles, slabs, natural stone and concrete pavers
  • Uncoupling function minimises tension between the subfloor and installed floorcoverings
  • Bridges static cracks in the subfloor
  • Loose laid system allows the installation of new tiles and slabs without damaging the existing subfloor
  • Easy to apply and to cut
  • Suitable for heated screeds

Unit Size Available: 50m x 1m roll

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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