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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

Kingspan Insulation Boards for Floors, Walls & Roofs

Kingspan Thermaroof TR27 1200mm x 1200mm