Kingspan Insulation - Kingspan Insulation - Lower Lambda Kooltherm

Kooltherm K100

Kingspan Group Kingspan Insulation

Kooltherm K100 - Frequently Asked Questions

What is a 'lambda'?

The lambda of a product is its thermal performance. The lower the lambda value, the more difficult it is for heat to pass through. Therefore thermal performance is improved and a reduced thickness of insulation is needed to achieve the desired U-value.

What is the lambda value of the new Kingspan Kooltherm K100 range products?

The new products have a lambda value of just 0.018 W/m.K across all thicknesses. Here are the thicknesses required for commonly used insulation materials to achieve the same level of thermal perfomance:

Lambda W/m.K Type of Insulation Thickness
0.018 Kingspan Kooltherm K100 range 55mm
0.020 Kingspan Kooltherm 60mm
0.022 PIR 65mm
0.034 Rock Mineral Fibre 100mm
Thickness of insulation to achieve an R-value of 2.857 m2.K/W.
Thicknesses are rounded up to the nearest 5mm

The Kingspan Kooltherm K100 range provides a level of performance that is unrivalled in the world of rigid thermoset insulation materials.

What are the Kingspan Kooltherm K100 range products?

The following products are no longer available for specification:
  • Kingspan Kooltherm K3 Floorboard
  • Kingspan Kooltherm K8 Cavity Board
  • Kingspan Kooltherm K7 Pitched Roof Board
  • Kingspan Kooltherm K10 FM Soffit Board
  • Kingspan Kooltherm K10 PLUS Soffit Board
  • Kingspan Kooltherm K12 Framing Board
  • Kingspan Kooltherm K17 Insulated Plasterboard
  • Kingspan Kooltherm K18 Insulated Plasterboard