Kingspan Thermaroof TR27 is a premium flat roof insulation board made from high-performance rigid PIR foam. Designed for use under mechanically fixed single-ply waterproofing, mastic asphalt, bitumen-based and cold liquid-applied systems, it achieves a low thermal conductivity of as low as 0.024 W/m·K. Lightweight and easy to cut, it simplifies installation while supporting compliance with Part L and BREEAM requirements. The boards are available in thicknesses ranging from 25mm to 150mm and each 1200mm x 600mm unit provides a compact coverage of 0.72m². Average board weight varies by thickness, with a 100mm board weighing approximately 3.6kg (3600g).

Key Features

Kingspan
Insulation

Kingspan Thermaroof TR27 is a premium flat roof insulation board made from high-performance rigid PIR foam. Designed for use under mechanically fixed single-ply waterproofing, mastic asphalt, bitumen-based and cold liquid-applied systems, it achieves a low thermal conductivity of as low as 0.024 W/m·K. Lightweight and easy to cut, it simplifies installation while supporting compliance with Part L and BREEAM requirements. The boards are available in thicknesses ranging from 25mm to 150mm and each 1200mm x 600mm unit provides a compact coverage of 0.72m². Average board weight varies by thickness, with a 100mm board weighing approximately 3.6kg (3600g).

Key Features

Kingspan
Insulation
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Kingspan Thermaroof TR27 1200mm x 1200mm

£32.00
Kingspan TR27 foil-faced PIR insulation board for flat roofs. Thermal conductivity as low as 0.024 W/mK. Covers 1.44m². Lightweight and strong.

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Kingspan Thermaroof TR27 is a premium flat roof insulation board made from high-performance rigid PIR foam. Designed for use under mechanically fixed single-ply waterproofing, mastic asphalt, bitumen-based and cold liquid-applied systems, it achieves a low thermal conductivity of as low as 0.024 W/m·K. Lightweight and easy to cut, it simplifies installation while supporting compliance with Part L and BREEAM requirements. The boards are available in thicknesses ranging from 25mm to 150mm and each 1200mm x 600mm unit provides a compact coverage of 0.72m². Average board weight varies by thickness, with a 100mm board weighing approximately 3.6kg (3600g).

Key Features

  • Thermal conductivity: as low as 0.024 W/m·K
  • Available in 25mm to 150mm thicknesses
  • Each board covers 0.72m²
  • Compatible with a wide range of waterproofing systems
  • Lightweight and easy to install compared to other commonly used insulants
  • Fire rated to Euroclass F per EN 13501-1
  • Compressive strength: ≥150 kPa at 10% compression
  • Certified to BS EN 13165 and BBA certified
  • Vendor: Kingspan

Description

Kingspan Thermaroof TR27 is a premium flat roof insulation board made from high-performance rigid PIR foam. Designed for use under mechanically fixed single-ply waterproofing, mastic asphalt, bitumen-based and cold liquid-applied systems, it achieves a low thermal conductivity of as low as 0.024 W/m·K. Lightweight and easy to cut, it simplifies installation while supporting compliance with Part L and BREEAM requirements. The boards are available in thicknesses ranging from 25mm to 150mm and each 1200mm x 600mm unit provides a compact coverage of 0.72m². Average board weight varies by thickness, with a 100mm board weighing approximately 3.6kg (3600g).

Key Features

  • Thermal conductivity: as low as 0.024 W/m·K
  • Available in 25mm to 150mm thicknesses
  • Each board covers 0.72m²
  • Compatible with a wide range of waterproofing systems
  • Lightweight and easy to install compared to other commonly used insulants
  • Fire rated to Euroclass F per EN 13501-1
  • Compressive strength: ≥150 kPa at 10% compression
  • Certified to BS EN 13165 and BBA certified
  • Vendor: Kingspan

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High-Performance Flat Roof Insulation

Kingspan Thermaroof TR27 1200mm x 1200mm is engineered for durability and insulation efficiency in flat roof systems. Its foil-faced PIR board provides consistent thermal performance and can be used under a variety of waterproofing layers in both warm and inverted roof configurations.
With compressive strength ≥150kPa and low water absorption, this board maintains its integrity even under foot traffic and heavy roof coverings.

Tested and Compliant

TR27 meets key thermal and mechanical standards, including BS EN 13165. The board offers a thermal conductivity as low as 0.024 W/mK and delivers long-term reliability in U-value performance.

Sustainability at Scale

Kingspan Thermaroof TR27 is manufactured with a zero ODP formulation and low GWP. It supports BREEAM-rated projects and contributes to long-term energy efficiency goals in commercial builds.

Board Size and Coverage

Each board measures 1200mm x 1200mm and covers 1.44m². Thicknesses range from 25mm to 150mm, offering tailored thermal resistance across specifications.

Versatile Compatibility

Thermaroof TR27 is suitable for warm roof applications with bitumen, asphalt, or adhered single-ply systems. Its easy handling and consistent dimensions ensure efficient installation compared to some other commonly used insulants.

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