Customers can be confident that product labeled as fire retardant timber is indeed compliant or exceeds the fire retardant requirements and can be used for multiple builds where flame proofing is required.. We supply flameproof plywood for euro b and euro c classes. Our fire retardant plywood is fireproofed and can be used in risk areas. Creffields supplies fire proofed timber boards and plywood, these fire retardant boards are used in film studios, conferences and many other areas that require fire retardant licences.