Kingspan K108 Cavity Board

  • Size of boards: 1200mm x 450mm
  • Premium performance rigid thermoset insulation for cavity wall insulation
  • Lightweight and easy to install
  • Superior thermal performance
  • High compressive strength
  • Ideal for new-build
  • K108 is sold per board

Kingspan K108 Partial Fill Cavity Wall Insulation Board

Kingspan Kooltherm K108 is a premium performance, rigid thermoset phenolic insulation board for application within cavity walls with a residual 10mm cavity. Kooltherm K108 is faced on both sides with a low emissivity composite foil. The core itself offers unrivalled thermal performance with its thermal conductivity of o.o18W/m2K.

Kingspan K108 insulation is made of high-quality phenolic foam. It’s CFC and HCFC free and has an ozone depletion potential of zero. Its environmental impact is therefore very low for a foam insulation material. K108 meets NHBC technical requirements when used with a 50mm cavity, is easy to install and resists moisture penetration.

Technical Specification

  • Composition: phenolic insulation core faced on both sides with foil
  • Thermal conductivity: 0.018 W/m2K
  • Reaction to fire: Class 0
  • Size of boards: 1200mm x 450mm
  • Thickness available: 50mm, 60mm, 75mm, 100mm
  • Compressive strength: 120kPa

Coverage per pack

Thickness (mm) Boards per Pack M2 per Pack
50 10 5.40
60 8 4.32
75 6 3.24
100 5 2.70


K108 insulation boards should be installed in accordance with the manufacturer’s installation guidelines – these should cover design and all aspects of the application of the insulation. Kingspan Kooltherm K108 is usually held in position by the wall ties used to tie the two skins of masonry together.


Shelf life: please see the manufacturer’s date of expiry. Keep in a dry place, in the original packaging. Avoid excess heat or UV light exposure.


50mm, 60mm, 75mm, 100mm


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