XPS Insulation – 30mm (1m2)

£9.20 (incl VAT)

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  • Thermal conductivity: 0.034W/(m2K)
  • 1200 x 600 size boards
  • Good moisture resistance
  • High strength
  • XPS insulation is sold by the m2

About XPS Insulation

Extruded Polystyrene XPS is a modern insulating material with fantastic thermal properties, good moisture resistance and high strength. This extruded polystyrene (XPS) board is a high density board that can be used for various applications on buildings, including DPC insulation, extending concrete windowsills or providing insulation backing where EPS is not suitable to use. The material has a smooth closed-cell surface ready for use.

These XPS boards can be used on timber, masonry and system build properties, as well as for tile hanging and as the base for a wide range of rendering systems.

  • Closed-cell
  • Reduces the risk of water penetration
  • Compact and robust

Technical Specifications 

  • Composition: extruded polysterene, silver boards
  • Long term compression strength (kPa): 130
  • Thermal Conductivity: 0.034W/(m2K)
  • Thickness of XPS boards: 30mm
  • Length x Width: 1200mm x 600mm

Preparation for XPS Insulation

Use a protection mat to prepare the property before applying the insulation to the DPC.

Try to use a hot knife or hot wire cutters to minimise mess.


The XPS insulation boards should be installed in accordance with a project plan or a brief prepared by the architect. The boards  – if being applied to the area below the DPC or attached to the substrate – should be glued on with a quick drying mortar or adhesive (see EWI-225 Premium Basecoat).

After having been fixed to the area below the DPC or on the sills (when left to dry), the work area should be covered sufficiently to prevent water penetration or exposure to UV light.

When set and ready, apply the basecoat or mortar ready to sink into the fibre glass mesh. Once this has been installed, the substrate is ready for the application of the top coat.


Easy to sweep up or hoover.


Sold by the square metre.


Shelf life: please see the manufacturer’s date of expiry. Keep in a dry place, in the original undamaged packaging, avoid excess heat or UV light exposure.

Safety Measures 

Wear eye protection, gloves and a mask. Take extra caution when using cutting equipment.

Compliance with Standards

The product complies with the harmonised standard EN 13164:2013

SKU: EWI-450-30
Weight35 kg


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