What Is A Fire Doorset?

A fire doorset is a complete assembly that includes a fire-resistant door, frame, and all associated hardware, designed to provide a specific level of fire protection in a building. These components are specifically engineered to prevent the spread of fire and smoke from one area of a structure to another for a designated period, thereby allowing safe evacuation and compartmentalizing the fire.

Fire doorsets are crucial elements in passive fire protection systems. They are tested and certified to meet stringent fire resistance standards, ensuring they can withstand exposure to fire for a specified duration without compromising their integrity or allowing flames or hot gases to pass through.

The key components of a fire doorset include:

1. Door Leaf: The actual door panel that is made from materials such as timber, steel, or glass, designed to resist fire for a specific time period.
2. Frame: The structural component that surrounds the door opening and supports the door leaf. It is also designed to resist fire and is often made from steel or other non-combustible materials.
3. Hardware: Includes hinges, handles, closers, locks, and other accessories necessary for the operation and security of the door. This hardware is specially designed to maintain the fire-resistance properties of the doorset.
4. Seals: Intumescent and smoke seals are used around the perimeter of the door to prevent smoke and fire from passing through gaps when the door is closed. These seals expand when exposed to heat, providing a tighter seal.

Fire doorsets are rated based on their ability to withstand fire for a certain length of time, typically ranging from 30 minutes to several hours. The rating indicates how long the doorset can contain a fire before it is compromised. These ratings are determined through standardized fire tests.

Proper installation and maintenance of fire doorsets are critical to ensure their effectiveness in case of a fire. Regular inspections and servicing are necessary to guarantee that the doors will operate correctly and provide the required level of protection when needed.