Essential Fire Door Checks To Ensure Building Safety
Posted by Doors Inc on August 15th, 2025
Fire doors play a huge role in preventing the rapid spread of fire and smoke, thereby helping to protect lives and property during a fire emergency. Yet, they are often overlooked in routine safety inspections.
This article will explore the key fire door checks you can perform to ensure your building remains safe and compliant.
Most Important Fire Door Checks:
Inspect Door for Certification Labels
The first step in any fire door check is to look for a certification label, usually found on the top or side edge of the door leaf. This label confirms that the door has been manufactured as a fire door. A missing or illegible certification label means the fire door cannot be guaranteed as compliant, regardless of its appearance.
During inspections, ensure the label is intact, legible, and not painted over. Without proper certification, the door may fail prematurely in the event of a fire. If no label exists, the door should be replaced or inspected by a professional to confirm safety.
Check the Door Condition
Inspect the door leaf for cracks, warping, holes or other visible damage. Even minor defects can compromise the door’s ability to withstand heat and flames. Look out for previous repairs that may not have been carried out to fire safety standards.
Paint or surface finishes should not obscure the material integrity of the door. If the door shows signs of wear, deterioration or tampering, it should be reported and either repaired using approved methods or replaced entirely.
No Excessive Frame Wear or Uneven Gaps
A fire door can only work if it’s closed. Therefore, it’s essential that each leaf fits properly within its frame and that the gaps between the leaf and frame are even and within safety guidelines, with a maximum of 3-4mm. Additionally, the gap at the bottom should be below 8mm unless a smoke seal is present.
If you notice that the doors are misaligned, dragging or failing to close fully, prompt action is required immediately to maintain fire safety compliance.
Seals are Secure
Intumescent smoke seals work by expanding in high temperatures to block the spread of fire and smoke. During an inspection, it’s essential to check that the seals around the edges of the door or frame are still intact, complete and not damaged or loosened.
Ultimately, seals should also be continuous, unbroken and firmly attached in their grooves without signs of wear, for without them, fire and smoke can travel through the cracks. If you notice any faults during your inspection, they must be replaced immediately with approved replacements to ensure complete protection.
Fire-Rated Glazing
Many fire doors contain vision panels or glazing, which must also be fire-rated to provide adequate resistance. Be vigilant during your fire door checks to ensure there are no cracks, chips or breaks that could allow fire, smoke or gases to travel through.
Any standard glass or incorrect glazing methods can compromise the fire door, even if the door itself is certified. If uncertain, have the glazing inspected or replaced by qualified fire door specialists.
Check All Hinges and Hardware
Hinges are vital for fire doors to remain properly aligned and functional, as they hold them together under pressure and heat during an emergency. There should be at least three fire-rated hinges that are securely fixed, with no missing, loose or broken screws.
Hinges should not show signs of rust, wear, or damage, and an appropriate lubricant spray may be needed to ensure smooth operation. As fire-rated hardware is specially designed to resist high temperatures and maintain structural integrity, whereas non-fire-rated hardware can fail quickly in fire conditions, all hardware parts, including locks, latches, handles, push bars and door closers, must be replaced with certified fire door hardware.
Ensure Doors Are Closing Properly
Fire doors only work when they’re closed. Any obstruction or malfunction reduces the door’s ability to contain fire and smoke, reducing the evacuation time. You can test each door by opening it halfway and allowing it to close on its own. It should latch securely without sticking, slamming or leaving gaps.
Automatic closing mechanisms, such as door closers, must be in good working order and not propped open by wedges or hooks. If a door fails to close smoothly or leaves a gap when latched, immediate adjustment or repair is required to maintain safety.
The Importance of Having Fire Doors Inspected by Professionals
While regular in-house checks are essential, a professional fire door inspection offers a more comprehensive level of assurance, for they have the expertise to identify issues that may not be visible to untrained eyes, such as hidden defects, incorrect installations or non-compliant hardware substitutions.
They’re also necessary to meet regulatory requirements and demonstrate due diligence in fire safety management. Ultimately, involving professionals ensures that fire doors not only appear functional but truly provide the life-saving protection they are designed for.
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