Cork does not melt, does not drip, and does not release halogenated combustion products. Under direct flame, it forms a carbonised char layer that insulates the substrate behind it.
This char behaviour is the reason cork has been used as an ablative shield on space launch vehicles for decades. In building applications, expanded cork board achieves Euroclass E classification without any added flame retardant chemistry.
Specifying for your project?
Request a sample kit of our cork grades to test density, granulometry and performance in your specific application.
Request a sample