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Ravatherm XPS X 700 SL closed-cell polystyrene foam thermal insulation. Its thermal insulation capability, high compressive strength and resistance to moisture ensures it can be safely used in locations where good thermal insulation capability is only one of many complex requirements. It is suitable for load-bearing industrial floors, base slabs or high-load rooftop car parks.

Related literature

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Standard product features

Board size:

1250 x 600 mm.

Edge profile:

Shiplap edge.

Compressive strength:

700 kPa.

Thermal conductivity:

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

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

250 kN/m².

Fire Classification:

To BS EN 13501, 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.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-45-65/410 Extruded polystyrene (XPS) board

Product specification

An important note about specifying



Ravago Building Solutions


+44 (330) 060 6015

Product reference

Ravatherm XPS X 700 SL


[50 mm]
[100 mm]

Manufacturer details

Ravago Building Solutions,
Estuary Road,
Kings Lynn, PE30 2HJ
Tel +44 (330) 060 6015
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NBS National BIM Library