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 that can be associated with open-cell materials such as mineral fibre, which can result in reduced thermal performance. Rigid phenolic insulation is the most thermally-efficient insulant commonly available. Utilising the thinnest possible insulation board to achieve required U-values, each product is designed to a specific need and manufactured to precise standards and tolerances including ISO 9001:2000.

Size and weight

Products in the Kingspan Kooltherm® range vary in size and thickness. Typical density: 35kg/m3.


Typical compressive strength exceeds 125kPa at 10% compression when tested to BS EN 826:1996.

Effect of fire

Phenolic core achieves Class 0/Low Risk to The Building Regulations/Building Standards and <5% smoke obscuration to BS 5111:Part 1:1974.

Moisture properties

Boards achieve a water-vapour resistance far greater than 100MNs/g when tested in accordance with BS 4370-2:1993.

Thermal properties

Thermal conductivity (λ value) 0.021 to 0.024W/mK depending on thickness. 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
WVisit Kingspan Insulation's website
 Visit the Kingspan Insulation U Value Calculator
 Pembridge, Leominster, Herefordshire, HR6 9LA

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