Kooltherm Insulation

Kooltherm insulation is a range of high-performance thermal insulation boards for roof, wall and floor applications. Each board has an extremely thin profile that maximises usable space – offering greater floor area, loft space, and ceiling height than alternative insulation materials.

Discover our trusted selection of Kooltherm insulation, including K5, K103, K107, K108 and K110 boards. Each product is available in various sizes, with competitive prices and prompt delivery.


Shop our Premium Kooltherm Insulation.

Building Shop proudly offers a comprehensive selection of Kingspan Kooltherm insulation boards – an industry favourite for high-specification applications. Kooltherm delivers long-lasting thermal protection throughout the building's life when installed correctly on walls, floors, or roofs. These boards are also resistant to moisture and water vapour, and their thermoset construction ensures excellent fire performance.

Additionally, Kooltherm boards are among the thinnest on the market. Their lightweight design simplifies handling, and once installed, their thin profile maximises usable space on the property. 

What is Kooltherm used for? 

Kooltherm insulation is helpful for everything from floor insulation to cavity walls. Discover the varieties we stock below:

  • K5 External Wall Board: Ideal for external insulation.
  • K103 Floorboard: Perfect for insulating beam and block, concrete, and timber floors.
  • K107 Pitched Roof Board: Used in tiled or slated pitched roofs, dwarf walls, attic floors, dormer windows and flat ceilings. 
  • K108 Cavity Board: A premium solution for partial fill cavity wall insulation.
  • K110 Soffit Board: Tailored for thin structural ceiling (soffit) construction.

If you need assistance locating the best product for your task, email sales@buildingshop.co.uk or call 01372 230 830 to speak with our experts.