Kingspan Kooltherm K107 Pitched Roof Insulation Board - 2400mm x 1200mm x 50mm - 6 Pack

Kingspan Kooltherm K107 Pitched Roof Insulation Board provides premium thermal performance for til...

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B&QB&Q - 50mm Kooltherm K107 Pitched Roof Insulation Board 2400mm X 1200mm (X6 Boards)
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£616.68
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HomebaseKingspan Kooltherm K107 Pitched Roof Insulation Board 2400 X 1200 X 50Mm 6 Pack
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£659.00
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Product Information

Full details

The Kingspan Kooltherm K107 is a premium insulation solution tailored for professionals and homeowners undertaking new-build or refurbishment projects involving tiled or slated pitched roofs. Offering industry-leading thermal efficiency through its advanced phenolic core, it provides significant energy savings and temperature regulation for living spaces directly beneath the roof line. While it delivers exceptional performance in a thin profile, it requires precise cutting and careful handling to ensure airtight installation, making it best suited for those comfortable with structural insulation tasks.

All features

Model Part NumberK107
BrandKingspan

Extended Product Information

FAQs

Can K107 be used for floor insulation?

K107 is specifically engineered for pitched roof applications. For floor insulation, please consult Kingspan's specific range of floor-grade boards.

Does this board require a separate vapour control layer?

The integrated foil facing acts as a vapour barrier. However, all joints must be sealed with professional-grade foil tape to ensure a continuous vapour control layer.

Is the material safe to cut without a mask?

While the core is fibre-free, cutting any rigid insulation generates dust. It is recommended to wear a dust mask and work in a well-ventilated area.

What is the thickness of each board?

Each board provided in this pack is 50mm thick.

Can I install this directly onto external rafters?

K107 is designed for warm roof construction. Ensure your roofing system design includes the necessary breathable membranes and counter-battens as required by building codes.

Troubleshooting

Difficulty achieving a tight fit between irregular rafters

Use a template of the space to cut the board accurately rather than measuring directly, ensuring a friction fit without damaging the board edges.

Board edges crumbling during cutting

Use a finer-toothed saw blade and apply light pressure; ensure the board is supported fully along its entire length during the cutting process.

Pros and Cons

Pros

  • High thermal efficiency per unit of thickness
  • Lightweight and relatively easy to handle on site
  • Excellent resistance to water vapour
  • Ideal for both new builds and renovation projects
  • Fibre-free core simplifies installation safety

Cons

  • Requires precise measurements for a perfect fit
  • More expensive than basic mineral wool alternatives
  • Rigid boards do not flex to fit irregular gaps

Setup, Compatibility & Care

Installation of the K107 boards requires standard woodworking tools, such as a fine-toothed saw or a sharp insulation knife. When fitting the boards:

  1. Ensure the rafters or joists are clean and dry.
  2. Measure the gap between rafters accurately; leave a minimal tolerance for the board thickness.
  3. Install the boards with the foil face exposed toward the ventilated gap, following local building regulations for cavity ventilation.
  4. Secure the boards using recommended mechanical fasteners or specialized insulation adhesives.
  5. Use vapour-resistant foil tape on all butt joints to create a continuous thermal and vapour barrier.

Store boards in a flat, dry area, protected from rain and direct sunlight until ready for installation. If working in humid conditions, ensure the foil edges are adequately sealed to prevent moisture absorption into the core.

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