Technical Information


XPS Foam


Classic Underlay 3mm Classic Underlay 5mm Classic Underlay 6mm Premier Underlay 3mm LVT Underlay 1.5mm Sure Grip LVT Underlay Product Image
Description UoM 3mm
1.5mm Sure Grip LVT
  Fan-Fold Board Standard Board Standard Board Metalized Foil/ Fan-Fold Board Metalized Foil/ Fan Fold Board Sure Grip / Fan-Fold Metalized Foil
Dimension mm 1200×400 600×856 600×856 1200×400 1200×400 1200×400
Thickness mm 3 5 6 3 1.5 1.5
Thickness Tolerance mm 0.5 0.5 0.5 0.5 0.5 0.5
Dimensional Tolerance mm 2.5 2.5 2.5 2.5 2.5 2.5
Foam Density kg/m3 35 35 35 35 85 85
Thermal Conductivity W/(m.K) 0.014 0.024 0.026 0.014 0.007 0.007
Compression Strength t/m2 5 10 10 5 367 kPa 367 kPa
Water Absorption vol. % <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
Impact Sound Reduction dB 19 20 20 19 19 19
Fire Protection Classification Euroclass E E E E E E
  Blue Green Orange Blue Jade Black
Pack Size/no. Folds per Pack 20 folds 19 boards 19 boards 20 Folds 20 folds 20 folds
Thermal Resistance m2K/w 0.125 0.208 0.229 0.125 0.063 0.063
Tog Rating Tog 1.3 2.1 2.3 1.3 0.6 0.6
Pack Coverage m2 9.6 9.76 9.76 9.6 9.6 9.6
  • What are XPS Foam Underlay Boards?

XPS foam is an insulating board manufactured using fully recyclable material. It is produced from foamed polystyrene, a material that doesn’t deteriorate. The cell structure in the board is constructed with very fine closed cells that give the product its excellent physical and mechanical characteristics.

  • An excellent insulation that saves energy

The board doesn’t conduct heat due to the special cell structure. When XPS boards are laid as an underlay any heat from the room or floor will be reflected back towards the floor surface. As this helps to prevent heat wastage, energy and thereby .lowers your energy consumption and carbon footprint.

  • Effective protection against cold and damp

XPS boards not only take care of the heat, they are also an effective guard against the cold and damp. The cold will be held back by the non-conducting characteristics of the foam. XPS board is also water repellent it will not rot or support mould growth and will help hold back any damp from floors. XPS boards are also resistant to cement, plaster and most alkalis, however, not against organic solvents.

  • Sound Insulation

In addition XPS boards have excellent sound insulating properties, which makes the floor “quieter” to walk on and an ideal product for use when needing to reduce sound transmission to the room below. We use the services of UKAS accredited testing laboratories for all external testing in addition to our own in house rigorous quality and testing systems.

  • Foil, Tape and Overlap

Makes easy secure joins between the rows or boards, Also provides moisture and vapour protection.


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