AIM Upstand Board – Polyfoam

AIM Zero ODP Insulated Upstand Board (Polyfoam). AIM Zero ODP Insulated Upstand Boards are manufactured from a CO² blown extruded polystyrene foam bonded to our external grade high impact facing board. They are used to provide thermal insulation to the parapet walls in inverted roof systems.

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  • Standard size: 1200x600
  • Thickness: 56mm
  • Ozone depletion potential of zero, CFC and HCFC free
  • Polyfoam Eco Laminate board meets the code for sustainable homes Global Warming Potential (GWP) of less than 5
  • Compressive strength of Polyfoam Eco Laminate board 200kPa
  • Thermal Conductivity of Polyfoam 0.033 W/mK
  • External grade facing board is highly resistant to impact damage

Fire Performance

The external grade high impact facing board complies with the performance requirements of class O of the building regulations & conforms to BS476 part 5 (ignitability) 476 part 6 (fire propagation) & 476 part 7 (surface spread of flame).


The boards should be cut using a TCT saw (ensure that FFP2 or 3 grade PPE is used to protect against inhalation of dust during cutting). The boards should be mechanically fixed to the parapet wall using the recommended through fixings. Fixing centres should not exceed 600mm. Fixings should be positioned at least 50mm from the top of the board, but not exceed 200mm. In the event that the roof deck is not supporting the bottom of the upstand board, additional mechanical through fixings should be used to compensate.

Mechanical fixings

AIM recommends Speedline DDS fixings or similar approved when installing this product. Ensure that the fixings penetrate the parapet wall by at least 25mm. These are available from SIG Fixings and other approved distributors.


The external grade board can be decorated if required. The board does not require priming and can be painted with alkali resistant paints such as acrylics, chlorinated rubber, epoxy, PVA, PVC, polyurethane and silicate.

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