Further technical information such as composition and manufacture, size and weight, performance and sitework...

Composition and manufacture

Closed-cell structure resists both moisture and water-vapour ingress problems associated with open-cell material such as mineral fibre, resulting in reduced thermal performance. Rigid urethane insulation is one of the most thermally-efficient insulation products commonly available. Each product is designed to fulfil a specific need, and has been manufactured to precise standards and tolerances, including ISO 9001:2000.

Size and weight

Products within the Therma™ range vary in size and weight. Typical density: 32kg/m3.


Typical compressive strength exceeds 140kPa at 10% compression when tested to BS EN 826:1996.

Effect of fire

All boards have been subjected to British Standard fire tests; results are available. Flat roof boards for use under single-ply waterproofing membrane are now available with LPC and FM approval.

Moisture properties

Foil-faced boards achieve a water-vapour resistance far greater than 100MNs/g when tested in accordance with BS 4370-2:1993. Tissue-faced boards achieve a resistance of 300MNs/g.

Thermal properties

Thermal conductivity (λ value) 0.023 to 0.028W/mK, depending on the specific product and thickness. Thermal resistance (R value) varies with thickness.


Products are as standard CFC/HCFC free with zero Ozone Depletion Potential (ODP).

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Kingspan Insulation

Kingspan Insulation

Insulation boards for low energy low carbon buildings. Optimum, premium and high performance rigid insulation products for building fabric applications, including roofs, walls and floors.

Our range of insulation boards includes Kooltherm,...
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T(01544) 388 601
 01544 387 382 Tech Dept.
F(01544) 388 888
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 Pembridge, Leominster, Herefordshire, HR6 9LA

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