There are no set rules for how long fire doors should last but you should consider how they are being used and how frequently they are being inspected. Despite being sturdy and often built for commercial use, they are still susceptible to wear and tear over time.
The lifespan of a fire door can vary between different properties depending on a variety of factors:
Exposure to fire damage
Damage from mis-use or force
Frequency of use over time
Natural deterioration
Fire doors are made up of different components and materials which can affect the performance of the door and how much protection it offers.
Core structure - all fire doors have a solid core but this can degrade over time, which affects the level of protection and safety.
Delamination - layers of materials within the door can start to separate, typically due to use over time or exposure to the elements.
Visible damage - forced entry or vandalism may create obvious damage to the fire door, which can create a weakness in the structure. While this can sometimes be repaired, it could be an opportunity for a replacement.
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