Durable, organically inert and delivering a high compressive strength, StyroRoof is ideal for inverted roofs subjected to engineered loads or constant foot traffic.

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In Australia, green roofs are growing in popularity due to their key benefits – helping to reduce the reliance on summer cooling demands, reducing energy consumption and carbon pollution, and contributing to insulating and shading buildings. The combination of the substrate, plants and the embedded air in a green roof system also provides excellent sound insulation, leading to a more peaceful office environment, especially in urban areas.

StyroRoof, made from Styroboard XPS extruded polystyrene, is a closed cell sheeting that delivers high R-values and excellent compressive strength. Even when faced with extreme weather conditions, StyroRoof still preserves its thermal and physical properties thanks to its high density cell structure and low moisture absorption. Placed below the soil but above the concrete on a roof, StyroRoof can assist with creating a thermal barrier and improving energy performance of the overall building. 

Unlike inferior, imported products, StyroRoof is an Australian made product, manufactured at our state-of-the-art production facility. A true green building product, StyroRoof is environmentally friendly, refrigerant free, and produces no ozone depleting substances. StyroRoof also complies with Australian Standard 1366 – Part 4, and meets the Building Code of Australia in relation to energy efficiency requirements.

If you’re looking to increase the sustainability of your commercial building design, incorporating a green roof will assist in creating not only a healthier building environment, but a more sustainable building that will pay itself off in savings from lower energy bills in the future. 

Why StyroRoof?

  • Highly compressive
  • Durable and sturdy for long lasting applications
  • Low moisture absorption
  • KPA rating to suit every application


  • lightweight reverseGreen roofs

Product Specifications

  • Sizes
  • Thermal Conductivity
  • Compressive Strength
ThicknessR-ValueK-ValueTesting Method
25mm 0.81R 0.031 AS-2464.5//ASTM C518
30mm 0.94R 0.031 AS-2464.5//ASTM C518
40mm 1.29R 0.031 AS-2464.5//ASTM C518
50mm 1.55R 0.033 AS-2464.5//ASTM C518
60mm 1.82R 0.033 AS-2464.5//ASTM C519
75mm 2.15R 0.034 AS-2464.5//ASTM C518

NB: This information is based on our current knowledge and experience. In view of the many factors that may affect processing and application, this data does not relieve the purchaser of the responsibility of carrying out their own tests and experiments; neither do they imply any legally binding assurance of certain properties or of suitability for a specific purpose. It is the responsibility of those to whom we supply our products to ensure that any proprietary rights and existing laws and legislations are observed.

Min. Compressive Strength
(measured parallel to rise)
2%10%YieldTesting Method
25mm Sheet >60kPa > 250kPa n/a AS-2498.3//ASTIM D1621
30mm Sheet >90kPa > 250kPa n/a AS-2498.3//ASTIM D1621
40mm Sheet >150kPa > 350kPa n/a AS-2498.3//ASTIM D1621
50mm Sheet > 230kPa > 350kPa > 300kPa AS-2498.3//ASTIM D1621
60mm Sheet > 240kPa > 350kPa > 400kPa AS-2498.3//ASTIM D1622
75mm Sheet > 280kPa > 350kPa > 400kPa AS-2498.3//ASTIM D1621
Width 600mm
Length 2400mm
Thickness 25mm, 30mm, 40mm, 50mm, 60mm, 75mm
Edge Configuration Square
Nominal Density 32 - 36 kg/m3

Non-standard sheet sizes and thicknesses are available upon application, and can be cut to suit your specific requirements. Some sizes may require a lead time of 8 – 10 weeks.

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