Kingspan Insulation

Kingspan insulation boards at trade prices – Kooltherm phenolic, Thermapitch and Thermawall PIR, Thermaroof flat roof boards and GreenGuard XPS – delivered to England and Wales in 2–3 working days.

The Kingspan range we stock

  • Kooltherm phenolic (λ as low as 0.018–0.019 W/mK, so thinner for the same U-value): K103 floorboard (25–150mm), K107 pitched roof board, K106 and K108 cavity boards, K110 soffit board, K112 framing board, K5 external wall board and K118 insulated plasterboard (37.5–82.5mm).
  • Thermapitch TP10 PIR board, 2400 × 1200mm, 25–150mm, for pitched roofs, floors and walls.
  • Thermawall TW50 partial-fill cavity board, 1200 × 450mm, 40–100mm.
  • Thermaroof TR24, TR26 and TR27 PIR flat roof boards for different waterproofing systems.
  • GreenGuard GG300 XPS, 1250 × 600mm, 30–150mm, for inverted roofs and heavy-duty floors.

Not sure between phenolic and PIR? Phenolic costs more but saves depth – useful where headroom or rafter depth is tight. Our PIR U-value calculator helps you size a board. For other PIR brands see all PIR insulation boards.

Delivery: prices are ex VAT. We deliver to England and Wales in 2–3 working days – free on orders over £500 ex VAT, £50 below that, with a £400 minimum order.

What thickness of PIR do I need? Check your floor, wall or roof against Building Regulations (Part L) targets with our free U-value calculator. Open U-value calculator

98 products

Kingspan insulation boards are versatile, lightweight and designed to maximise thermal performance. Made with high performance PIR cores, these rigid insulation boards have exceptional compressive strength and a sleek design that makes installation easier. Perfect for walls, floors and roofs, these boards are easy to cut, install and adapt for residential and commercial buildings.

For unventilated pitched roofs and applications at the rafter level, Kingspan Thermapitch TP10 provides excellent thermal conductivity and simplifies the insulation installation process. Warm roof spaces created with TP10 ensures optimal energy efficiency and protects buildings from heat loss in the colder months.

Kingspan cavity closers are designed to reduce heat loss and prevent thermal bridging in cavity wall applications. Closing cavities minimises energy wastage and helps maintain indoor temperatures while meeting building regulations. These products are ideal for retrofitting projects, improving performance and compliance.

Kingspan SIPs combine insulation and structure in one, simplifying the build process. Delivered with precision engineering, these panels reduce build time and meet advanced thermal and structural requirements. Ideal for low energy homes, offices and public buildings.

Our high performance membranes provide robust protection for your building envelope, preventing air and moisture penetration. Aiding durability and thermal continuity these membranes ensure long term insulation performance.

With thermal conductivity as low as 0.022 W/mK Kingspan insulation prevents energy loss and keeps spaces comfortable.

Thin high performance boards increase insulation efficiency without reducing internal space.

Superior thermal performance stabilises indoor temperatures and reduces heating and cooling bills.

Our products are designed with sustainability at the core, supporting carbon reduction and energy efficiency targets.

Kingspan products meet the toughest thermal performance requirements, ensuring compliance with relevant standards.

Lightweight and easy to work with, Kingspan solutions save time and labour costs

Ensure surfaces are clean, dry and free from debris. Measure accurately to avoid material wastage or poor coverage.

Kingspan boards are easy to cut to required dimensions using manual or power tools.

Use foil tape or sealants to enhance thermal continuity and reduce air leaks.

For cavity wall insulation follow proper layering techniques to close gaps and ensure complete coverage.

After installation verify compliance with fire safety and thermal regulations and ensure optimal energy performance.