Class 0, 1 or 3 surface spread of flame : Classes of surface spread of flame for materials needed to line the walls of ceiling of escape routes. See: Appendix B for further information
Solutions Fire Safety Ltd, Fire Safety Glossary: An A - Z of definitions regarding fire safety terms and vocabulary, Solutions Fire Safety Ltd, UK 2012. http://solutionsfire.co.uk/Fire-literatures-PDF/Fi re-Safety-Glossary.pdf, (Fr Sfty - Brit) {465}