What type of wood is used for fire doors?

Fire doors are typically made from solid wood species that have a high fire-resistance rating, such as oak, maple, or birch. They may also incorporate a core made of materials like mineral core or honeycomb core for added fire resistance. The choice of wood and construction methods ensures that the door can withstand fire for a specified duration, helping to prevent the spread of flames and smoke. Additionally, fire doors are often finished with fire-retardant coatings to enhance their protective properties.