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A laminate of Polyfoam high performance, rigid, extruded polystyrene (XPS) with a tough, weather-resistant facing board, intended for the thermal insulation and protection of upstands in flat roofing. The extruded polystyrene content of Polyfoam Upstand Board 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


  • Length: 1200 mm.
  • Width: 600 mm.
  • Polyfoam thickness: 50 mm.
  • Facing board thickness: 6 mm.

Edge profile:


Thermal conductivity:

  • Polyfoam: 0.033 W/m·K.
  • Facing board: 0.47 W/m·K.

Thermal resistance:

  • Polyfoam: 1.50 m²K/W.
  • Facing board: 0.012 m²K/W.

NBS Specification

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

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Polyfoam XPS Ltd


+44 (0)142 9855100

Product reference

Polyfoam Upstand Board

Manufacturer details

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