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EXPOL provides solid insulation solutions to solve the difficulties in achieving high R-Values in narrow roof spaces. EXPOL skillion roof solutions are panels cut to suit a variety of purlin / rafter spacings.

EXPOL Platinum Board (Graphite Infused EPS – Expanded Polystyrene) is a premium product with superior insulating qualities, whereas EXPOL ThermaSlab (EPS – Expanded Polystyrene) sheets are a cost-effective alternative for areas that are not restricted by space.

EXPOL polystyrene roof insulation is made from high performance ( EPS – Expanded Polystyrene. Installation time is reduced with EXPOL’s lightweight boards that are easy to store and easy to place in narrow skillion roof spaces. 

EXPOL’s  EPS – Expanded Polystyrene boards have a long-standing reputation for durability, resistance to degradation, and resistance to water ingress. With no ongoing maintenance required, installing EXPOL ceiling insulations boards is a one-off job. The thermal performance of the roofing insulation boards lasts the life of the building.


Product could be damaged and warranty will be void.

EXPOL Skillion Roof Insulation - ThermaSlab Panels

EXPOL Skillion Roof Insulation - Platinum Board

EXPOL ceiling insulation is available in a range of widths making it easy to fit in any rafter or purlin spacings. Poorly insulated homes have a serious impact on our environment. 

Download Skillion Roof Insulation Brochure

EXPOL ThermaSlab S Expanded Polystyrene Sheets contains recycled content and can be recycled.

The Products

EXPOL ThermaSlab S, M and H (EPS – Expanded Polystyrene) sheets are available in a variety of grades to suit the application, supplied in full sheets or cut to suit purlin / rafter spacings.

Visit EXPOL ThermaSlab (EPS – Expanded Polystyrene)    

EXPOL Platinum Board (Graphite Infused EPS – Expanded Polystyrene) is supplied in full sheets or cut to suit. EXPOL Platinum Board (Graphite Infused EPS – Expanded Polystyrene) is a premium product which achieves superior R-values relative to thickness.
Visit EXPOL Platinum Board  (Graphite Infused EPS – Expanded Polystyrene)   



EXPOL ThermaSlab S, M and H (EPS – Expanded Polystyrene)
EXPOL Platinum Board (Graphite Infused EPS – Expanded Polystyrene)

When insulating skillion roofs the insulation should be cut accurately to create a neat fit between the rafters or purlins. It is also important to make sure that the insulation is maximized by using the correct thickness; this is determined by the thickness of the rafters or purlins. There is a requirement for an air gap above the insulation, check with your architect or specifier for the exact measurement for your project.

Care should be taken to ensure that there is no contact between the polystyrene and any electrical wiring.

System Components

EXPOL Wireguard

EXPOL WireGuard

EXPOL WireGuard is a waxed paper strip used to separate exposed electrical cables from EXPOL insulation. Expanded Polystyrene in some cases reacts with the plasticiser and degrades the elastic properties of some electrical cables over a prolonged period.

EXPOL Styro-Fix Construction Adhesive

Styro-FIX Construction Adhesive

Styro-FIX is an advanced single component polyurethane-based construction adhesive.

This powerful adhesive is developed especially for the construction industry and will bond most types of construction materials including timber (damp and dry), concrete, plasterboard, polystyrene and many other porous and non-porous substrates.

It bonds expanded polystyrene to most surfaces, delivers strong adhesion and rapid cure, it is gun-able and non-drip.



All products and grades of Expanded Polystyrene supplied by EXPOL for skillion roof insulation comply with manufacturing standard AS 1366 Part 3 1992.

For further, detailed information on all products contact EXPOL 0800 86 33 73

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