Product family
Austrotherm XPS
Extruded polystyrene for wherever high loads and moisture meet — foundations, basement walls, plinths, industrial floors and inverted roofs.

XPS (extruded polystyrene) is an insulation material that guarantees considerable energy savings. On the market it is often called "styrodur", a term we avoid because it is the trade name of a competing product. Wherever extreme compressive loads and moisture put the highest demands on insulation, our XPS meets them, offering ideal solutions for many applications. Since 2005 Austrotherm has also made its XPS in Serbia (in Niš). Since summer 2011 we have also made Austrotherm XPS TOP 50 and Austrotherm XPS TOP 70 in Niš, 50 mm to 120 mm thick, exclusively with a smooth surface and with straight or stepped ("rebated") edges. Our Niš plant also makes 10 mm and 20 mm boards under the name Austrotherm Universalplatte.
Austrotherm XPS is used to insulate foundations, basements, floors and other areas exposed to moisture, plinths, floors of industrial and other buildings with high compressive loads, roads, railway tracks, airport aprons and runways, ice rinks, cold stores and more.

By compressive strength — defined as the minimum pressure that compresses the material by 10% — we distinguish the following XPS boards:
Depending on the type, our XPS has a minimum compressive strength of 300 kPa (30 t/m²), 500 kPa (50 t/m²) or even 700 kPa (70 t/m²)!
Apart from extreme situations (ice rinks, airport aprons and runways and similar areas with enormous loads), in practice Austrotherm XPS TOP 30 (smooth surface) and Austrotherm XPS TOP P (ribbed surface) are mostly used. These boards come in four variants:
- smooth surface and straight edges
- smooth surface and stepped edges ("rebate")
- ribbed surface and straight edges
- ribbed surface and stepped edges ("rebate")
- These boards are 20 mm to 120 mm thick.
Since summer 2011 we have also made Austrotherm XPS TOP 50 and Austrotherm XPS TOP 70 in Niš, 50 mm to 120 mm thick. These boards are made exclusively with a smooth surface and with straight or stepped ("rebated") edges.
In Austria (Purbach) we even make XPS boards up to 200 mm thick!
Standard XPS board sizes are 1250 mm x 600 mm (straight edges) and 1265 mm x 615 mm (stepped edges).
8 reasons to use Austrotherm XPS
- Outstanding thermal insulation — higher energy efficiency of the building. With our pink Austrotherm XPS boards you save heat energy, actively contribute to the rational use of energy resources and lower the heating costs of your building.
- High mechanical strength. The compressive resistance of these boards comes into its own wherever high mechanical loads occur or are expected — in floors of garages and other car parks, industrial buildings and more.
- Closed-cell structure. Unlike most other insulation materials, Austrotherm XPS has an almost completely closed-cell structure, which practically rules out water permeating the board.
- Weather resistance. Austrotherm XPS is extremely resistant to freeze-thaw cycles; even extreme humidity is no problem for it.
- Easy installation. Austrotherm XPS is very light (its density ranges from 30 kg/m³ to 35 kg/m³ depending on the type), so it is easy to work and install.
- Reaction to fire. Austrotherm XPS is a normally flammable insulation material, class "E" to the European standard EN 13501-1.
- Durability. Any insulation must resist ageing and decay — which our Austrotherm XPS does.
- Good environmental properties. Austrotherm uses CO2 technology in production, which greatly reduces harmful emissions. With its low primary energy use and good recyclability, you actively contribute to protecting the environment.
Products in this family
XPS TOPAustrotherm XPS TOP 30
Thermal insulation board of extruded polystyrene with a smooth surface
- Compressive strength
- 300 kPa
- Permitted load (2%)
- 130 kPa
- Fire class
- E
XPS TOPAustrotherm XPS TOP 30 TB
Thermal insulation board of extruded polystyrene with a smooth surface, made by thermo-bonding
- λ
- 0.034–0.036 W/mK
- Compressive strength
- 300 kPa
- Permitted load (2%)
- 130 kPa
- Fire class
- E
XPS TOPAustrotherm XPS TOP P
Thermal insulation board of extruded polystyrene with a ribbed surface.
- Compressive strength
- 300 kPa
- Fire class
- E
XPS TOPAustrotherm XPS TOP P TB
Thermal insulation board of extruded polystyrene with a ribbed surface, made by thermo-bonding.
- λ
- 0.034–0.036 W/mK
- Compressive strength
- 300 kPa
- Fire class
- E
XPS TOPAustrotherm XPS TOP 50
Thermal insulation board of extruded polystyrene with a smooth surface
- Compressive strength
- 500 kPa
- Permitted load (2%)
- 180 kPa
- Fire class
- E
XPS TOPAustrotherm XPS TOP 70
Thermal insulation board of extruded polystyrene with a smooth surface.
- Compressive strength
- 700 kPa
- Permitted load (2%)
- 250 kPa
- Fire class
- E
XPS TOPAustrotherm Universalplatte
Thin all-purpose board of extruded polystyrene with straight edges and a smooth or rough surface
- λ
- 0.033 W/mK
- Compressive strength
- 200 kPa
Private customers and contractors
We sell wholesale only. Our products are on sale at hundreds of building-material dealers in Serbia and Montenegro.
Building-material dealers
Registered companies order directly from us — with the order form and the current price list.