Celotex FR4000
Our new fire resistant PIR insulation is now available to buy from your local supplier.
At Celotex we have set a new standard with our brand new and revolutionary fire resistant PIR insulation board.
Representing the next generation of insulation, FR4000 is the most cost effective, thermally efficient product, offering Class O performance. And amazingly it’s the only rigid insulation board that offers Class O performance throughout the product – not just the foam core!
Featuring a rigid polyisocyanurate foam core with low emissivity textured aluminium facers that allow for greater thermal performance, using FR4000 will mean that some applications may require up to 5mm less product, saving space and cost!
With enhanced thermal properties and improved fire performance FR4000 truly is the next generation of PIR insulation. And what is more, it is easier to use and handle than phenolic equivalents.
CG4000 for cavity walls
Featuring the same performance characteristics as FR4000, CG4000 is available in convenient smaller board sizes and is suitable for cavity wall applications.
Technical Support
As brand leaders and insulation specialists, we also offer an industry-leading Technical Advisory Service. For answers to your technical queries, call us on 0901 996 0100* or visit the
Contact page.
Feel FR4000 for yourself
Why not request your information pack and free sample of FR4000? Simply fill in the form opposite and click on send to receive your own piece of Celotex Class O technology. We think you’ll be impressed.
*Calls cost 30p from a BT landline and lines are open Monday – Friday from 8.00am – 5.15pm