Insulated panels have been used on industrial and commercial building for nearly 40 years and are regularly used in the retail, leisure, education and health sectors.

Since 2004 all insulated panel systems from EPIC member companies have been manufactured with rigid urethane PIR (polyisocyanurate) cores that satisfy the requirements of the Loss Prevention Council – LPS 1181 or Factory Mutual – FMRC 4880/4771 – class 1 certifications.

Insulated Panels are one of the most widely tested and thoroughly researched of the commonly used construction systems in order their behaviour in fire can be fully understood and so that they can be specified with confidence

This section highlights all the latest information on the fire performance of PIR cored insulated panels.

Performance in fire tests

The fire performance of Insulated Panels has been assessed in detail in a series of large-scale fire tests and the results are recorded in a 20-page EPIC Guide “Performance of external cladding systems in fire”.

Based on the LPS 1181 large-scale fire test this guide presents the results of the only major fire research programme to verify the reaction to fire behaviour of insulated panels and other external cladding systems. See EPIC fire tests.

Performance in actual fires

Fire research results: analysis of actual fires (report)

An extensive research programme carried out by EPIC shows that external roof and wall claddings constructed from rigid urethane panels are not a major fire risk. See fire research results.

Fire research: case history studies of actual fires

EPIC continually monitors actual fires in which insulated panels have become involved. This series of Case Studies covers different types of fire, both internal and external to the building envelope and demonstrates that certificated PIR panels perform very well and without significant contribution to the fire. See fire case studies.

Insurance certification

Insurance industry certificated panels are based on large-scale tests developed by the Loss Prevention Council (LPC) and Factory Mutual (FM) specifically to assess panel products. They test panels in realistic full-scale, as-built conditions and simulate the behaviour in real fires as shown by actual fire inspections. See Certificated panels and testing.Insurance certificated PIR Panels for internal use are tested in accordance with LPS 1181: Part 2 ‘Requirements and tests for wall and ceiling lining systems for use as internal construction in buildings’ or LPS 1208 “Fire test requirements for elements of construction used to provide compartmentation”.