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    Floor Insulation - Ground

    Product Type:

      Extruded Polystyrene (XPS)

    Market Sector:


    Polyfoam Floorboard Extra

    Product Description:



    The thermal conductivity of the Polyfoam Floorboard Extra is 0.033 W/mK


    Polyfoam Floorboard Extra is a rigid, lightweight extruded polystyrene (XPS) insulation. In addition to  a lambda value as low as 0.033 W/mK, the thermally efficient foam board is also robust and moisture resistant, making it suitable for high load ground floor slabs, basement walls and floors, swimming pool basins and perimeter insulation below DPC.


    • High compressive strength of 300 kPa
    • XPS insulation is unique among widely-available thermal insulation materials for its tolerance of damp or wet environments
    • Polyfoam XPS insulation is a robust solution that will stand up to the demands of any construction site
    • Global Warming Potential (GWP) <5
    • Zero ozone depletion potential (ODP)
    • Polyfoam XPS products are free from CFCs and HCFCs
    • Certified Green Guide rating A+
    • Product Specific, Environmental Product Declarations
    • BES 6001: Responsible Sourcing of Construction Products
    • BBA Agrément certification (17/5454-1)
    • Manufactured in UK


    Polyfoam Floorboard Extra is suitable for almost any ground floor construction including:

    • Ground Floor – Insulation below slab
    • Ground Floor – Insulation above slab (floating floor)
    • Underfloor heating systems
    • Basement walls and floor
    • Swimming pool basins
    • External wall – below DPC


    M4 Product Table

    Encon Product Code Product Description Unit Type Quantity
    26VE25025 P'FOAM F'BRD EXTRA 2500x600x 25mm SE BOARD
    26VE25035 P'FOAM F'BRD EXTRA 2500x600x 35mm SE BOARD
    26VE25050 P'FOAM F'BRD EXTRA 2500x600x 50mm SE BOARD
    26VE25065 P'FOAM F'BRD EXTRA 2500x600x 65mm SE BOARD
    26VE25075 P'FOAM F'BRD EXTRA 2500x600x 75mm SE BOARD
    26VE12100 P'FOAM F'BRD EXTRA 1250x600x100mm LJ
    26VE25060 P'FOAM F'BRD EXTRA 2500x600x 60mm SE
    26VE12150 P'FOAM F'BRD EXTRA 1250x600x150mm LJ
    26VE12125 P'FOAM F'BRD EXTRA 1250x600x125mm LJ