Kingspan Thermaroof TR26 - Flat roof insulation

Designed for use beneath mechanically fixed single-ply non-bituminous roofing systems.


Kingspan Thermaroof TR26 is CFC/ HCFC-free and is manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP). and Low Global Warming Potential (GWP).

The product is certified to ISO 9001: 2015 (Quality Management Systems. Requirements), ISO 14001: 2015 (Environmental Management Systems. Requirements),  ISO 45001: 2018 (Occupational Health and Safety Management Systems) and ISO 50001: 2011 (Energy Management Systems. Requirements with guidance for use).

Kingspan Thermaroof TR26 is also manufactured in accordance with the Harmonised Standard BS EN 13165: 2001 (Thermal insulation products for buildings- Factory made rigid polyurethane foam (PUR) products- Specification).

General information




Polyisocyanurate (PIR)

Rigid thermoset polyisocyanurate (PIR) insulant.




2400 x 1200 x 25 mm

2400 x 1200 x 30 mm

2400 x 1200 x 40 mm

2400 x 1200 x 45 mm

2400 x 1200 x 50 mm

Show more

Uniclass 2015

Pr_25_71_63_66 Polyisocyanurate (PIR) foam boardsPrimary


J41/10 Built-up reinforced bitumen membrane warm deck roof covering

J41/420 Rigid urethane foam warm deck roof insulation

J42/10 Warm deck roof covering

J42/420 Rigid urethane foam warm deck roof insulation

Specification data - Polyisocyanurate (PIR) foam boards Enhanced data


To BS EN 13165 and BS 4841-4.

Third party product certification

British Board of Agrément (BBA) Certification.

BBA 16/5332.

Fire performance

To BS EN 13501-1, class E.

Euroclass Rtf E - Produced at Kingspan Insulation’s Pembridge, Herefordshire and Selby, North Yorkshire manufacturing facilities.

To BS EN 13501-1, No Performance Determined (NPD).

Euroclass RtF NPD - Produced at Kingspan Insulation’s Castleblayney manufacturing facility.

Thermal conductivity (maximum)

0.022 W/mK.

Cross section

Uniform thickness.

Face size (length x width)

2400 x 1200 mm.

Compressive strength at 10% deformation

150 kPa.


Low emissivity composite foil.



Product Reference

Kingspan Thermaroof® TR26

Global warming potential (GWP)

Less than 5.

Ozone depletion potential (ODP)



1.4 kJ/kg°C.

Third party certifications
  • 16/5332
Similar products from Kingspan Insulation