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  • $17.86

    Polystyrene Foam Sheets 2.5 x 1.2M @ 40mm

    Polystyrene Foam Sheets M Grade 5 x 1.2M @ 75mm

    Polystyrene EPS panels are a highly versatile expanded polystyrene sheet solution ideal for the building and construction industries.

    Widely used across a number of building applications, Polystyrene EPS panels are a versatile and well proven construction material. Lightweight, strong, clean, and easy to handle, Polystyrene EPS panels provide insulation from temperature and noise and can be used as a base for rendered panels.

    Polystyrene EPS panels are ideal for use in both commercial and residential applications including warehouses, factories, shop fronts, office buildings, houses and apartment blocks, sheds, patios, and garages.

    Weather resistant with excellent thermal insulation properties and low moisture absorbency, Polystyrene EPS panels are the perfect material for insulating coolrooms, ceilings, underslabs, walls, and flat and inverted roofs.

    Polystyrene Sheet Sizes

    Styroboard EPS Sheets are available in a range of thicknesses from 10mm to 600mm.

    Our standard sheet sizes are as follows:

    2.5M & 5M x 1.2M

    3M & 6M x 1.2M

    Non-standard sheet sizes are available to be cut to your specific order, and sheets can also be ordered in varying thicknesses.

    Thermal Properties

    Suitable for use across steel studs, timber studs, and concrete and masonry buildings, Polystyrene Expanded Polystyrene Sheets provide an efficient and economical solution for insulation. Often used on the outside of the wall stud, cavities are maintained closer to room temperature which reduces the risk of surface and cavity condensation. The thermal mass advantages of concrete and masonry walls are also improved.

    Thermal conductivity for Polystyrne EPS grades are shown in the reference below.

    SL Grade k = 0.041 W/mk*
    S Grade k = 0.0397 W/mk*
    M Grade k = 0.0383 W/mk*
    H Grade k = 0.0368 W/mk*
    VH Grade k = 0.0352 W/mk*
    * k value @ reference temperature 25°C


    Nominal R-values (m²K/W) – excluding surface resistance

    EPS sheet thickness SLGrade SGrade MGrade HGrade
    41mm 1.00 1.05 1.07 1.11
    50mm 1.25 1.32 1.33 1.39
    75mm 1.90 1.97 2.00 2.08
    100mm 2.50 2.63 2.67 2.78

    Poly EPS and the Effects of Moisture

    It is recommended that an effective vapour barrier be provided in situations where significant moisture content build-up is likely to occur. Polystyrene EPS panels iare generally resistant to moisture gain; however, moisture content will affect its thermal performance as with all insulating material.

    There is a linear relationship between thermal resistance (R-value) loss and moisture content increase by volume. There is an approximate 2.5% loss of R-value per 1% of moisture content by volume increase (up to 20% m.c. by volume). Polystyrene panels that have a 2% moisture content by volume will have 95% of it’s dry R-value.

    Our Environment

    The manufacture of Polystyrene EPS panels produce no ozone depleting gases and uses no chlorofluorocarbons (CFCs).

    For each kilogram of oil used in the manufacture of Pol insulation, savings of up to 200kg of heating fuel can be made over the average lifespan of a house. In turn this plays a positive role in reducing carbon dioxide emissions and the effects of global warming.


    As a small streamlined business we are able to deliver to quality products at a great price. Although we deliver Australia wide our business offers super quick and reliable service to Melbourne and especially the Bayside area as we are located in Highett. We also deal with a large range of reliable Polystyrene Foam installers, so if you are looking for the right tradesmen for your job we can connect you without delay.

    This product is part of our large selection of Cladding supplies and you can find more information about it on the Vicfoam website.

    Polystyrene Foam EPS Sheets

    *Delivery of this product may attract extra costs due to the large size of the Polystyrene Sheets.