🔥 Understanding Fire Door Compliance: Why Small Modifications Can Create Big Problems

At Cadogan Facilities Management, one of our ongoing priorities is ensuring every building we manage meets New Zealand’s strict fire safety and compliance requirements. Recently, we’ve been reminded how easy it can be for well-intentioned residents to accidentally compromise a critical part of a building’s fire safety system — the fire doors.
What Is a Fire Door?
A fire door is a specially constructed door designed to resist the spread of fire and smoke, giving occupants valuable time to evacuate safely and helping to contain a fire within a specific area. Each door is tested and certified as part of a complete fire system, including the frame, hinges, seals, and locking mechanisms.
Why Modifications Create Problems
Fire doors are tested and certified in their original, unaltered condition — usually with a single approved lock and no additional holes or attachments. Any modification, such as adding another lock, drilling holes for hooks, or changing handles, can:
- Invalidate the door’s certification and compromise its fire resistance.
- Breach compliance requirements, affecting the building’s Building Warrant of Fitness (BWOF).
- Increase risk for all residents by allowing smoke or flames to pass through more easily in an emergency.
Even seemingly minor changes — like hanging decorations or installing a peephole — can impact the performance of the door under fire conditions.
The Cost of Non-Compliance
Once a fire door has been altered, it can’t simply be “patched up.” The entire door and frame typically need to be replaced to meet compliance standards. For many apartment owners, this can cost over $3,000 per door — not to mention the potential legal and insurance implications of a non-compliant building.
The Right Way to Handle Fire Door Changes
If you’re considering any change to your apartment door, here’s what you should do:
- Check with your Building Manager before making any modifications.
- Consult a certified fire door specialist (such as Hardware Direct) to confirm the change won’t affect compliance.
- Never drill, cut, or attach anything to a fire door without prior approval.
Your Building Manager can coordinate with approved suppliers to ensure any work remains compliant with the manufacturer’s specifications and building code requirements.
Why This Matters for Everyone
Fire safety in multi-unit buildings relies on collective responsibility. One compromised door doesn’t just affect one apartment — it can put the entire building at risk. By following the right processes, residents help maintain a safe environment for everyone and ensure the building continues to meet its compliance obligations.
Our Commitment
At Cadogan, we take a proactive approach to compliance and education. We work closely with Body Corporate Committees, residents, and contractors to ensure every element of fire protection — from alarms to doors — remains effective and fully compliant.
By understanding the importance of proper fire door maintenance and approval processes, we can all contribute to safer, stronger, and more resilient communities.
Cadogan Facilities Management
Professional. Proactive. Compliant.
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