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Inverted Roof Insulation

ProTherm SD Upstand


ProTherm SD Upstand Insulation Board is used to thermally insulate and protect upstand walls. Manufactured from a CO2 blown extruded polystyrene foam factory laminated to a 6mm thick weather resistant high impact facing board. Available in a range of thicknesses, see declared performance table for available thickness.

ProTherm SD Upstand insulation Board has a Zero Ozone Depletion Potential (ODP), a Global Warming Potential (GWP) of less than 5 and an A rating in accordance with the Green Guide to Specification.

For use with Inverted roofing waterproofing such as PermaQuik PQ6100, EshaFlex, EshaUniversal and ParaFlex.

For a comprehensive NBS J31 specification contract Radmat Building Products.


Install ProTherm SD Upstand insulation Board after completion of the PermaQuik PQ6100 or EshaFlex DUO Invert roofing system.

ProTherm SD Upstand insulation Board should be cut to size using a TCT saw (a face mask is advised to guard against dust).

ProTherm SD Upstand insulation Board should be fixed directly to the upstand wall at not more than 600mm centres using Speedline DDS fixings or similar approved through fixings, ensuring the fixings are a minimum of 25mm longer than the overall thickness of the board. Fixings should be positioned at least 50mm from the top of the facing board, but should not exceed 200mm. In the event that a roof deck is not supporting the bottom of the board, additional through mechanical fixings should be used to compensate.

Where required the ProTherm SD Upstand insulation Board facing board can be painted without any special priming using an alkali resistant paint or emulsion. Two coats of paint will usually give a satisfactory finish. Suitable paints are: Acrylics, Chlorinated rubber, Epoxy, PVA, PVC, Polyurethane and silicate.

Description  Value
Board Width 1200mm
Board Thickness 20/40/50/60/80/100/120/150mm
Board Length 2400mm
Edge Profile Shiplap
Thermal Conductivity 0.035-0.038 W/mK
Fire Classification Class 0

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