The 5000 series products are marketed by application for a variety of uses. All products in the 5000 series share the same foam core, and are available in different thicknesses and sizes. The facer and finishes may vary according to the intended application. The constituent elements used for FR5000 and RS5000 are the same.

Both products have been independently tested. In 2011, the material used for FR5000 and RS5000 was tested for compliance with British Standard 476, Parts 6 and 7 (for spread of flame and fire propagation), and on the basis of these tests was classified Class 0.

Celotex marketed FR5000 from the summer of 2011 for pitched roofing, walls and floors in thicknesses between 25-150mm. In 2014, we considered how we might supply the over 18m market, which is subject to additional requirements. We determined, through additional independent testing, that the product we had marketed for the below 18m market as FR5000 also met the standard required for the above 18m market for the circumstances and parameters of the test conducted. When the test had been obtained, Celotex marketed the product as RS5000 in thicknesses between 50-150mm, with client-facing information showing that it was intended for use in a rainscreen cladding system for buildings over 18m tall and explaining the testing undertaken.

We are continuing to supply FR5000 for its intended applications. We are not currently supplying FR5000 if we know that a customer wishes to use it in a rainscreen cladding system or external facade for a building above 18m, for the same reason that we have stopped the sale of RS5000.

PIR has been used as insulation for around 40 years. The use of PIR insulation in buildings below 18m is governed by different regulatory requirements and raises different issues to its use in rainscreen cladding systems for buildings over 18m. The reasons why we decided to stop supply of RS5000 pending further clarity do not apply to the use of our products in the below 18m market.