Fire resistant doors in Post Tensioningare in demand due to the risk of fire from poor circuitry as well as fire resulting from extreme temperatures. Fire doors stop the spread of fire and also provide an escape when opened. They feature intumescent seals and cold smoke seals to prevent the smoke from spreading into the building. Fire doors come in a variety of sizes, styles and gauges. They should be approved by Civil Defense and should comply with the local standards. Examples of fire resistant doors include steel doors, wooden doors, garage/overhead doors, blast proof doors, sliding doors, rolling shutters and access panel.