Kingspan Kooltherm K108 Cavity Board

Kingspan Kooltherm K108 Cavity Board is a high-performance partial fill cavity wall insulation designed to deliver superior thermal efficiency with a low thermal conductivity of 0.019 W/mK. 

Its slim profile enables walls to achieve the same U-value as thicker alternatives, helping to maximize internal floor space while maintaining a clear cavity to resist moisture penetration.

Kingspan Kooltherm K108 Benefits:

  • Ultra-Thin & High-Performance – One of the thinnest insulation options for partial fill cavity walls, reducing wall thickness while maintaining efficiency.
  • Maximizes Natural Light & Space – Slimmer walls allow for more internal space and increased natural daylight.
  • Moisture Resistance – Maintains a clear cavity, preventing moisture penetration and enhancing building durability.
  • Enhanced Thermal Performance – Low emissivity foil facings help increase the thermal resistance of the cavity.
  • Easy to Install & Durable – Lightweight, strong, and available in thicknesses from 40 mm to 150 mm for flexible application.

Available in 450 mm x 1200 mm boards, Kingspan Kooltherm K108 is the ideal solution for energy-efficient, space-saving cavity wall insulation in new builds and refurbishments.