Expanded Polystyrene sheets

Are you looking for a convenient, affordable and light insulation material? Expanded polystyrene sheets (EPS) provide a simple, effective and reliable solution for all your domestic and commercial insulation needs. Koolfoam manufactures the highest quality polystyrene sheets on the market, delivered right to your door in and around Brisbane.

What is EPS

EPS are sheets made of expanded polystyrene, a light yet solid cellular plastics material.

Expanded polystyrene sheets have a variety of uses. The most common is insulation, thanks to the superior insulating abilities of EPS. With its excellent mechanical properties and effective thermal insulation across a large spectrum of temperatures, EPS helps keep you comfortable and protected from both heat and cold.

Our EPS sheets provide a versatile option for the insulation of various structures. They can insulate walls, ceilings, roofs, sheds, garage doors, floors and more. Polystyrene sheets are the most cost-effective insulation for concrete forms and structural panels. Yet, EPS meets and exceeds all relevant building codes, making for a dependable product.

Expanded polystyrene sheets can be used in both domestic and commercial settings. Whether you need to insulate your home, a factory, a workshop or a warehouse, EPS sheets will shield your property.

Benefits of EPS

One of the main reasons EPS is so effective when used as thermal insulation is its high R-value. The R-value refers to a material’s ability to resist heat flow. The thicker the sheet of EPS, the higher the R-value will be.

When it comes to R-value, our polystyrene sheets outperform materials such as weatherboards, plasterboards, concrete slabs, fibre cement sheets and more.

What’s more, EPS is resistant to water, insects and bacterial growth. It’s also lightweight, affordable and quick to produce, making it a practical material for many situations.

Expanded Polystyrene Class "S"

AS 13663-1992

Material Thickness mm

W/mK at 23°C

R value



R 0.634



R 0.963



R 1.268



R 1.648



R 1.902



R 2.530

Ask us anything about polystyrene. 

Koolfoam Ultra

Koolfoam Ultra is the new dimension in thermal and building insulation products.

Koolfoam ultra is a type of expanded polystyrene (EPS) with graphite particles in it. These particles both reflect and absorb heat and infra-red radiation. The result is grey EPS with a new level of insulation performance, up to 35% more efficient than white EPS.

Suggested uses:

  • Pipe Insulation
  • Underfloor insultaion with out without foil

R Values for Koolfoam ULTRA

Thickness mm





R 0.46



R 0.89



R 1.78



R 2.68



R 3.57

Koolfoam EPS R-value

R-value indicates the thermal resistance of a material. It expresses the ability of a specific thickness of a material to resist heat flow.

The definition of R-value is the reciprocal of the material's thermal conductance (C-value).

The R-value can also refer to an assembly of materials, such as the wall of a building. It can express the combined thermal resistance of an assembly of materials by adding up their individual R-values.

Here are some comparisons of R-values of common building materials:

  • Expanded polystyrene 50mm, m grade = R1.20
  • Brickwork, 110mm = R0.18
  • Weatherboards, 12 mm avg, pine = R0.08
  • Concrete slab, 2400kg/m3, 100mm = R0.069
  • Plaster board, 10mm = R0.059
  • Fibre cement sheet, 6mm = R0.019

The Koolfoam Difference

We aim to make your job or project easier with our quality customer service and products.

It all starts by offering solid advice on the best product to suit your needs. With our decades of industry experience, we have seen it all. Our team of friendly experts will be happy to help find a solution for your needs and budget.

We pride ourselves on producing the highest quality polystyrene sheets on the market. Our sheets don’t just have superior performance, they are also carefully finished and can be cut to the precise size you need.

Your experience as a customer is important to us. We want to meet and exceed your expectations with our top-notch customer service. Besides, we always deliver the finished product on time. We can even deliver the finished product to you, anywhere from North Brisbane to Gold Coast and Ipswich.

Whatever you’re after, contact us to make an order or ask our friendly, experienced team for advice. You can call us on 07 3209 1044 or e-mail at sales@koolfoam.com.au. We’ll be happy to find the perfect solution.

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