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20mm EPS Overlay Boards are suitable for tiling direct – no backerboards or intermediate layers required*, Using Ultra method simply prime the aluminium first, for tile adhesives.


No need to dig up floors, just spray and lay!


Tile direct to board! – Suitable for fitting Tile, Stone*, Laminate & wood direct to boards.


Dimensions: 1200mm x 600mm


20mm boards use 16mm pipe in 100m lengths


Download Factsheet FO1b


20mm boards require 16mm pipe in 100m lengths using 150mm pipe spacings


Approved for Tiling directly onto using our approved methods - without the need for a backerboard*, just prime the aluminium for tile adhesives. Premium+ Board is made with building grade 400 kPa EPS, the strongest available on the market.  


Thick Rapid Response Aluminium will give optimum system performance. Warmth underfloor heating boards are lightweight, super strong, easy to fit and designed to be fitted over any existing or new floor. No specialist tools are required, they can be simply cut to shape using a fine toothed saw or craft knife.


MAPEI, INSTARMAC and NORCROS approved for tiling onto - Using Mapei & Instarmac approved S2 flexible adhesive and primers please Refer to factsheet FO1b. *Natural stone may require a backerboard - please call for details or refer to Factsheet FO1b for specific details.


Suitable for Laminate, Wood, Carpet Vinyl and even Tiles. Quick to install using Spray contact adhesive ready for use straight away.


400 kPa - Fully approved by Mapei & Instarmac for tiling onto Using Mapei & Instarmac approved S2 flexible adhesive and primers please Refer to factsheet FO1b.


  • 400 kPa - the strongest EPS board available (Uses 4 times the material of  Low Density, competitors boards)
  • 20mm board uses 150mm pipe spacings with 100m pipe length
  • Mapei & Instarmac approved for tiling directly onto using specified methods as per  factsheet FO1b
  • Easy to cut to shape with basic tools
  • Eliminates the moisture, weight, mess and lengthy drying times of a screed Underfloor system


Laminate and engineered wood can be laid directly on top. Tiles can be fixed to the boards using Mapei or Ultra approved adhesive (available on request) when using Ultra method just prime the aluminium first. If you wish to carpet or lay vinyl a suitable backer board will need to be laid on the Overfloor boards.  The recommended maximum linear loop length for a 20mm board is 100m.


Beware when comparing Overfloor boards - although they may all look similar make sure you check the tech spec to ensure it's the correct strength for your desired finish.


Rapid Response® in all property types. Suitable for all Refurbishments and Renovations.


Please note: Output and system performance is dependent on insulation standards and environmental conditions.

20mm EPS Overlay Board (Pack of 10)

Excluding Tax
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