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Polyfoam Floorboard Extra

Polyfoam Floorboard Extra

Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

  • QA Certificate

    QA Certificate

    Certificate type

  • BSI Kitemark

    BSI Kitemark

    Certificate type

Polyfoam XPS Ltd

Polyfoam Floorboard Extra is a rigid, high performance, extruded polystyrene board used for the thermal insulation of commercial, industrial and cold storage floors and any building with high floor loadings.

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+44 (0)142 9855100 www.polyfoamxps.co.uk

Polyfoam Floorboard is a rigid, lightweight extruded polystyrene (XPS) insulation. Available in Standard, Extra and Super grades, it offers a range of compressive strengths for use in applications ranging from domestic floor slabs to intensively loaded industrial flooring. In addition to lambda values as low as 0.033 W/m·K, the thermally efficient foam boards are also robust and moisture resistant, making them suitable for basement walls and floors, swimming pool basins and perimeter insulation below DPC.

General information
Uniclass 2015
Pr_25_71_63_29 Extruded polystyrene (XPS) boardsPrimary

E20/200 Proprietary underslab insulation

E20/30 Underslab insulation

K11/115 Battened plywood floating floor

K11/125 Battened particleboard floating floor

K11/135 Battened oriented strand board floating floor

K11/145 Battened cement-bonded particleboard floating floor

K11/20 Battened particleboard floating floor

K11/215 Plywood floating floor

K11/225 Particleboard floating floor

K11/235 Oriented strand board floating floor

K11/245 Cement bonded particleboard floating floor

K11/25 Particleboard floating floor

M10/290 Floating construction

M10/40 Floating construction

Specification data - Extruded polystyrene (XPS) boards
Product Reference

Polyfoam Floorboard Extra


25 mm

35 mm

50 mm

60 mm

65 mm

75 mm

100 mm

125 mm

150 mm

Standard product features


  • Board length: 2500 mm; except ≥100 mm which are 1250 mm.
  • Board width: 600 mm.

Edge profile:

  • 25–75 mm: Square edge.
  • ≥100 mm: Lap joint.

Thermal conductivity:

0.033 W/m·K.


  • BRE Environmental Product Declaration.
  • BRE BES 6001 Responsible Sourcing for Construction Products.
  • Global Warming Potential (GWP) <5.
  • Zero ODP (Ozone Depletion Potential).
  • Free from CFCs and HCFCs.

Compressive strength (minimum):

300 kPa.

Product Options

Perimeter insulation:

Polyfoam Floorboard Extra can be cut to size for use as perimeter insulation to slabs and screeds.

Third party certifications

Additional certifications:

  • Environmental Product Declarations
  • BES 6001: Responsible Sourcing of Construction Products
  • ISO 9001:2015 Quality Management System
  • ISO 14001:2015 Environmental Management System
  • ISO 50001 Energy Management Systems
  • OHSAS 18001 Occupational Health & Safety Management Systems
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