Fire rated solutions are flame resistant / fire retardant and provide some passive resistance but are certainly not intumescent and don't broaden when heated. These should still be preferable for typical building needs than standard items which have no score of any form. Mixture: As the title implies, it is https://www.thesafetycentre.co.uk/blog/ems-wireless-firecell-systems-from-the-safety-centre/