Thermaroof TR27 LPC/FM

High performance flat roof insulation

Thermaroof TR27 LPC/ FM is a high performance, rigid thermoset polyisocyanurate (PIR) flat roof insulation board for use beneath mechanically fixed/fully adhered single-ply single-ply waterproofing, and partially bonded built-up felt and mastic asphalt.
Manufactured in Castleblayney this non-fibrous insulation is fully compatible with most bitumen based and mastic asphalt waterproofing systems.
  • FM approved for Class 1 steel deck roof assemblies
  • Compatible with most green roofs systems
  • Ideal for new build and refurbishment
  • Easy to handle and install
Thermaroof TR27 is manufactured with a coated glass tissue facing, autohesively bonded to the insulation core during manufacture. The TR27 is designed for use with adhered/bonded water proofing membreanes, and while mechanically fixed membranes can be installed over the TR27, we advise using the TR26 for improved performance.

Product brochure

Our product brochures include U-value tables, handling advice and installation guidance.

Therma TR27LPCFM Brochure

Product information

Product details


Thermal conductivity 0.026 W/m.K (< 80 mm)
0.025 W/m.K (80–119 mm)
0.024 W/m.K (≥ 120 mm)
Compressive strength at 10% compression 150 kPa
Facings Coated glass tissue
Core High performance rigid thermoset polyisocyanurate (PIR) insulant manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).
Board size 1.2 x 2.4 m

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Kingspan Insulation Ltd.

Bree Industrial Estate


Co. Monaghan

A75 X966

Tel: +353 (0) 42 979 5000

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