Kingspan Insulation - Kingspan Insulation - Thermaroof TR31 Roof Insulation


Kingspan Group Kingspan Insulation

Thermaroof TR31

Thermaroof TR31 is a high performance, fibre free, rigid thermoset insulation core faced with an FSC ® certified 6 mm nominal thickness WBP exterior grade plywood on its upper surface and a low emissivity composite foil facing on its lower surface. It provides insulation, vapour control layer and decking in one board.

Kingspan Thermaroof TR31

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Thermal conductivity 0.022 W/m.K (insulant)
0.14 W/m.K (plywood component)
Compressive strength at 10% compression

150 kPa

 Upper facing 6 mm FSC® certified WBP exterior grade plywood

 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).
Lower facing Composite foil
Board size 1.2 x 2.4 m
U-Value Calculations for insulating directly over timber joists




Thermaroof TR31

Flat Roofing Quick Guide

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