BPFI Knowledge Centre
Defect Classification
Guidance for identifying, assessing and classifying fire door defects within New Zealand buildings.
Introduction
Fire door defects can vary significantly in both severity and potential impact on fire and smoke performance.
In many buildings, defects are identified during BWOF inspections, routine maintenance, tenancy alterations, refurbishment works or reactive maintenance activities.
The purpose of defect classification is to establish a practical and consistent framework for assessing fire door defects, prioritising repairs and supporting defensible maintenance decisions.
Why Defect Classification Matters
Not all fire door defects carry the same level of risk.
Some defects may significantly compromise fire or smoke performance and require immediate action, while others may represent moderate deterioration, maintenance concerns or cosmetic issues only.
A structured defect classification system assists building owners, contractors and compliance managers in:
- Prioritising repairs appropriately
- Managing compliance risk
- Supporting lifecycle management
- Improving inspection consistency
- Reducing unnecessary replacement
- Supporting defensible maintenance decisions
Classification Philosophy
Fire doors should be assessed using practical, evidence-based and risk-informed approaches.
Classification should consider:
- Potential impact on fire resistance performance
- Potential impact on smoke control
- Door operation and positive latching
- Structural integrity
- Occupant risk
- Extent of damage or deterioration
- Repair practicality
- Availability of supporting evidence
The classification process should support proportional and practical remediation outcomes rather than automatic replacement assumptions.
Defect Classification Matrix
The following defect classifications are intended to provide practical guidance for assessing fire door conditions and prioritising remediation actions.
Critical Defects
Defects likely to significantly compromise fire resistance, smoke control or escape route protection.
Examples
- Door unable to positively latch
- Missing self-closing device
- Door permanently wedged open
- Severe structural damage
- Large unprotected penetrations
- Missing glazing system
- Severe frame separation
Recommended Action
- Immediate assessment and remediation
- Temporary risk controls where required
- Escalation to building management
- Urgent repair or replacement review
Major Defects
Defects likely to reduce fire or smoke performance and requiring prioritised remediation.
Examples
- Excessive perimeter gaps
- Damaged smoke seals
- Failed closer operation
- Damaged glazing beads
- Loose hinges or hardware
- Significant edge damage
Recommended Action
- Prioritised repair programme
- Repair assessment required
- Repair evidence documentation
- Ongoing monitoring until rectified
Moderate Defects
Defects with moderate impact on performance, maintainability or long-term condition.
Examples
- Minor frame damage
- Surface delamination
- Minor hardware wear
- Localised edge damage
- Minor seal deterioration
Recommended Action
- Planned maintenance repair
- Routine monitoring
- Record during inspections
Minor / Cosmetic Defects
Defects unlikely to significantly affect fire or smoke performance.
Examples
- Surface scratches
- Paint wear
- Small dents
- Minor cosmetic marks
Recommended Action
- Routine maintenance
- Monitor during inspections
Recommended Response Framework
Defect classifications should support practical and proportional remediation responses based on risk, performance impact and maintainability considerations.
Classification
Recommended Response
Typical Priority
Critical
Major
Moderate
Minor / Cosmetic