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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).

General information
Specification data - Extruded polystyrene (XPS) boards
Product Reference

Polyfoam Upstand Board

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.

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