NBS Source
List your products

Ravatherm XPS X 500 SL thermal insulation with its closed cell structure is suitable for the thermal insulation of heavy-duty inverted roofs, floor structures and load-bearing base slabs. It offers high strength with little compressive deformation and excellent thermal insulation properties even in damp environments over the long term.

General information



Steel grey


Extruded polystyrene




1250 x 50 x 600 mm

1250 x 75 x 600 mm

1250 x 100 x 600 mm

Uniclass 2015
Extruded polystyrene (XPS) boards (Pr_25_71_63_29)Primary
Specification data - Extruded polystyrene (XPS) boards
Product Reference

Ravatherm XPS X 500 SL


50 mm

1.6 m²K/W thermal resistance.

75 mm

2.4 m²K/W thermal resistance.

100 mm

3.1 m²K/W thermal resistance.

Standard product features

Board size:

1250 x 600 mm.

Edge profile:

Shiplap edge.

Compressive strength:

500 kPa.

Thermal conductivity:

  • 50 mm: 0.031 W/m·K.
  • 75 mm, 100 mm: 0.032 W/m·K.

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

180 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.

Digital objects
PlatformCompatibleVersionCertified to
- 6 2.1
- 6 2.1
Download now from NBS National BIM Library
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.
Similar products from Ravago Building Solutions