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High-performance, multipurpose extruded polystyrene (XPS) boards for the thermal insulation of domestic and industrial floors, basement and/ or cellar perimeter walls.

Ravatherm XPS X 300 SB thermal insulation is manufactured by an extrusion process, which results in a homogeneous, closed-cell material structure, smooth surface skin (extrusion skin) and many favourable material characteristics.

General information
Specification data - Extruded polystyrene (XPS) boards
Product Reference

Ravatherm XPS X 300 SB


30 mm

1.0 m²K/W thermal resistance.

50 mm

1.6 m²K/W thermal resistance.

75 mm

2.4 m²K/W thermal resistance.

100 mm

3.2 m²K/W thermal resistance.

125 mm

4.0 m²K/W thermal resistance.

Standard product features

Board size:

2500 x 600 mm.

Edge profile:

Butt edge.

Compressive strength:

300 kPa.

Thermal conductivity:

  • 50 mm: 0.030 W/m·K.
  • 75–125 mm: 0.031 W/m·K

Compressive creep (design load) maximum 2% deflection after 50 years:

130 kPa.

Fire classification:

To BS EN 13501-1, Euroclass E.

Operating temperature range:

-50°C to +75°C.

Foaming agent:

  • All Ravatherm XPS X products are hydrochlorofluorocarbon (HCFC)-free.
  • Ravatherm XPS X products are manufactured in the UK using technology that takes CO2 from industry and uses it as a blowing agent, in order to create blue extruded polystyrene foam with a global warming potential (GWP) of less than five.

Third party certifications
  • BS EN ISO 9001: 2000. : Quality Management System (BSI certificate Q05968)
  • ISO 14001:2004. : BSI Certificate EMS 547690
  • BS EN 13164: 2012. : Thermal insulation products for buildings – factory-made products of extruded polystyrene (XPS) – specification.
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