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Pro Board

High performance tile backer boards manufactured from high density polystyrene which is coated with a specially formulated reinforced cementitious coating that provides a hard wearing robust waterproof surface perfect for the application of tiles, plaster and synthetic render. Its rigidity and stability mean that a 10 mm thick board is sufficient to replace the more conventional 15–18 mm thick plywood required as per BS 5385-3:2007 to overlay timber floors prior to tiling. The 10 mm board will support a maximum weight of 85 kg/m² when used on walls.

Features and benefits:

  • Energy saving.
  • Class 0 fire rating for surface spread of flame to BS 476-6 and 7.
  • Tile ready surface.
  • Suitable for use with underfloor heating.
  • High compressive strength and impact resistance.
  • Excellent thermal insulation.

General information

600 x 1200 mm

Uniclass 2015
Pr_25_71_63_29 Extruded polystyrene (XPS) boardsPrimary

M40/27 Intermediate substrate

M40/470 Intermediate substrate

Specification data - Extruded polystyrene (XPS) boards
Product Reference

Pro Board


6 mm

2.35 kg, 6.6 w/m²k.

10 mm

2.37 kg, 3.66 w/m²k.

12.5 mm

2.42 kg, 2.86 w/m²k.

20 mm

2.59 kg, 1.74 w/m²k.

30 mm

2.81 kg, 1.14 w/m²k.

40 mm

3.03 kg, 0.85 w/m²k.

50 mm

3.25 kg, 0.67 w/m²k.

60 mm

3.47 kg, 0.56 w/m²k.

70 mm

3.69 kg, 0.48 w/m²k.

Standard product features


600 x 1200 mm.

Compressive strength:

300 kPa.

Thermal conductivity (BS EN 13164):

0.033 W/mK.

Water absorption (BS EN12087):


Density (foam core only):

36 kg/m³.

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