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Polyfoam Roofboard Super is a high performance, rigid, extruded polystyrene board that is lightweight that has excellent structural strength and long term effectiveness.

Polyfoam Roofboard Super is for use in flat roofing applications - from protected membrane roofs to single ply membrane roofs. Polyfoam Roofboard Super has a Global Warming Potential (GWP) of less than five and Zero Ozone Depletion Potential (ODP).

Related literature

The following content references this product:

Standard product features


  • Board length - 1250 mm.
  • Board width - 600 mm.

Edge profile:

15 mm lap joint.

Compressive strength (minimum):

500 kPa.

Thermal conductivity:

  • 50 and 60 mm: 0.034 W/m·K.
  • 80 and 100 mm: 0.036 W/m·K.


Polyfoam Slimline Zero Membrane can also be used in conjunction with Polyfoam Roofboard Super as a separating and filtration layer in low moisture impact protected membrane flat roofs.

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



Polyfoam XPS Ltd


+44 (0)142 9855100

Product reference

Polyfoam Roofboard Super


[50 mm]
[60 mm]
[80 mm]
[100 mm]

Manufacturer details

Hunter House Industrial Estate,
Hartlepool, TS25 2BE
Tel +44 (0)142 9855100
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NBS National BIM Library