Internal fire doors are essential components of a building’s passive fire protection system, designed to prevent the spread of fire and smoke between compartments. These doors are constructed from fire-resistant materials such as steel, timber, or composite cores, ensuring they can withstand high temperatures for a specified duration, typically 30 to 60 minutes. They play a critical role in safeguarding escape routes, allowing occupants to evacuate safely during an emergency. Internal fire doors must comply with strict regulatory standards, such as BS 476 or EN 1634, to ensure their effectiveness. Proper installation, including intumescent seals and self-closing mechanisms, is vital for maintaining their integrity.
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