High performance insulation for flat roofs waterproofed with fully adhered single–ply, partially bonded built-up felt, mastic asphalt and cold liquid applied waterproofing

What are the benefits of TR27 Flat Roof Insulation?
  • Rigid thermoset insulation providing thermal conductivities as low as 0.024 W/m.K
  • Fully compatible with most bitumen based and mastic asphalt waterproofing systems
  • Compatible with most green roof systems
  •  Resistant to the passage of water vapour
  • Easy to handle and install
  • Ideal for new build and refurbishment
  • Non–deleterious material
  • Manufactured with a blowing agent that has zero ODP and low GWP

Product brochure

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

Therma TR27LPCFM

Product information

Product details
Product Literature


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

How can we help you?

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Get in touch

Kingspan Insulation Ltd.

Bree Industrial Estate


Co. Monaghan

A75 X966

Tel: +353 (0) 42 979 5000