Fire-resistant architectural resin materials

A synthetic fire-resistant resin includes one or more of a polycarbonate resin material, and/or a polyester resin material mixed with a flame-retardant, such as a bis-diphenyldiphosphate flame-retardant. Alternatively, a mixture of polycarbonate resin material mixed with polyester resin material can be capped with a fire-resistant film. The resin sheet can be made at a thickness such that the resin sheet is structurally useful as a conventional building material. Furthermore the resin sheet can be made transparent, translucent, or colored, as desired for architectural purposes. The resin sheet further has a Vicat temperature that renders the extruded resin sheet easy to work with using conventional manufacturing techniques, and strong enough to be used in a wide variety of indoor and outdoor environments. In one implementation, fire-resistant resin sheets can be combined with a decorative image layer to form a decorative panel that can be used in Class A building environments.