What’s The Difference Between Internal and External Fire Doors

When it comes to fire safety, fire doors play a crucial role in preventing the spread of fire, smoke, and toxic fumes in buildings. However, it’s important to understand that there are different types of fire doors designed for specific purposes. In this blog, we will explore the difference between internal and external fire doors to help you make informed decisions when it comes to fire safety for your building.

Location and Function

The primary difference between internal and external fire doors lies in their location and function within a building. Internal fire doors are installed within the building, separating different areas or compartments. They are designed to contain the spread of fire and smoke within a specific area, allowing occupants to evacuate safely and preventing the fire from engulfing the entire building.

On the other hand, external fire doors are typically installed at building entrances or exits. Their primary function is to provide a secure and fire-resistant barrier between the building’s interior and the external environment. These doors are designed to resist fire, control smoke, and protect the building’s occupants during evacuation.

Fire Resistance Ratings

Both internal and external fire doors have fire resistance ratings, but they may differ based on their specific application. Fire resistance ratings indicate the amount of time a door can withstand fire and maintain its integrity. Common fire resistance ratings include 30 minutes, 60 minutes, and 120 minutes.
Internal fire doors typically have lower fire resistance ratings, as their primary purpose is to compartmentalize the building and slow down the spread of fire within specific areas. External fire doors, however, often have higher fire resistance ratings due to their role in protecting the building and its occupants from external fire hazards.

Design and Materials

Internal and external fire doors may also differ in terms of design and materials. Internal fire doors are often designed to blend with the overall aesthetic of the building’s interior. They may come in various styles, finishes, and materials to match the surrounding architecture and decor.

On the other hand, external fire doors prioritize security, weather resistance, and durability. They are typically made of robust materials such as steel or composite materials to withstand external elements, attempts at forced entry, and severe weather conditions.

Regulatory Compliance

Both internal and external fire doors must comply with relevant fire safety regulations and standards. In the UK, fire doors are subject to regulations such as the British Standard BS 476-22 or BS EN 1634-1. It is crucial to ensure that fire doors, regardless of their location, are properly certified and tested to meet these standards for fire resistance, smoke control, and self-closing mechanisms.

In conclusion, understanding the difference between internal and external fire doors is essential for effective fire safety planning. Internal fire doors compartmentalize the building, while external fire doors protect the building and its occupants from external fire hazards. Both types of fire doors are integral to a comprehensive fire safety strategy and must adhere to regulatory standards. At Fire Doors Rite, we offer a wide range of internal and external fire doors that are certified, tested, and tailored to meet your specific fire safety needs. Contact us today to ensure the utmost protection for your building and its occupants.

Post time: Dec-06-2023