Inspection schedules, cleaning procedures and record-keeping to keep your fire-rated glazing compliant and performing over its full service life.
Fire-rated glazing is a passive fire protection system. Unlike active systems (sprinklers, alarms), it does not trigger a warning when something is wrong. A seal that has shrunk, a frame that has shifted, or a panel that has micro-cracked will sit silently until a fire exposes the failure. Regular inspection is the only way to confirm the system is still capable of performing as tested.
Under the NCC 2022, fire safety measures in commercial buildings must be maintained to the standard they were originally installed. For glazing, this means maintaining the assembly to match its AS1530.4 test report. A building surveyor or fire safety auditor will ask for maintenance records. If you cannot produce them, the glazing may be flagged as non-compliant — even if it looks fine.
Core principle: Maintenance is not optional. It is a compliance requirement. The same certifier who signed off the installation will expect to see evidence of ongoing inspection during periodic building audits.
| Frequency | Action | Who |
|---|---|---|
| Monthly | Walk-through visual check of all panels. Look for obvious damage, cracked glass, missing labels. | Facility manager / building owner |
| Quarterly | Close inspection of seals, gaskets, beads. Check door closers, hinges and latches on fire doors. | Facility manager or maintenance contractor |
| Annually | Full inspection with edge clearance measurements, frame integrity check, seal condition assessment. Update formal maintenance log. | Qualified glazing contractor or fire safety professional |
| After any impact | Immediate inspection of any panel that has been struck — by equipment, furniture, or accidental contact. Look for cracks propagating from the impact point. | Facility manager; escalate to contractor if damage found |
Immediate action required: Any cracked glass panel, any missing or severely degraded intumescent seal, or any fire door that does not close and latch. These are not deferred-maintenance items. The panel or door is no longer performing as a fire-rated assembly. Tag it, quarantine the area and arrange replacement.
Cleaning is the maintenance task most likely to cause damage if done wrong. Fire-rated glass is not more fragile than standard glass, but the stakes are higher — a scratched or chemically damaged panel on an egress path is a compliance issue.
For insulated fire-rated units (double-glazed): If you see condensation or fogging between the panes, the edge seal has failed. Cleaning will not fix this. The unit needs replacement — it has lost its insulation rating and may have compromised fire performance.
Every inspection should produce a record. A maintenance log does not need to be complex, but it does need to be consistent. At minimum, record:
Store this log with the building's essential safety measures documentation. In many Australian jurisdictions, this is a legal requirement under state-based building regulations that reference the NCC.
| Issue | Repair possible? | Action |
|---|---|---|
| Minor surface scratch (<0.5 mm) | Monitor only | Document and recheck at next inspection. No action needed unless it deepens. |
| Shrunken or gapped seal | Sometimes | If the seal has pulled away but the material is still intact, a qualified glazier may be able to reposition and secure it. If the material is degraded, replace the seal with the manufacturer-specified part. |
| Cracked or chipped glass | No | Replace the panel. Fire-rated glass cannot be repaired once cracked. Use the same glass type from the same manufacturer to maintain the tested assembly configuration. |
| Delamination or interlayer clouding | No | Replace the panel. Delamination indicates the interlayer has failed and will not perform under fire conditions. |
| Frame corrosion | Sometimes | Surface rust can be treated and repainted. Structural corrosion requires frame replacement — consult a fire engineer. |
| Failed insulated unit seal (fogging) | No | Replace the entire insulated fire-rated unit. The thermal and fire performance are both compromised. |
| Fire door closer malfunction | Usually | Adjust or replace the closer. Test that the door latches fully after adjustment. A fire door that does not latch is non-compliant. |
Monthly and quarterly visual inspections can be done by the facility manager or building owner — someone who knows the building and can spot changes. Annual inspections and any repair or replacement work should be done by a qualified glazing contractor familiar with fire-rated systems. The contractor needs to understand that this is not standard glazing; every component must match the tested assembly.
For large commercial or healthcare facilities, consider engaging a fire safety professional to include glazing in the annual fire safety statement or equivalent report. This provides independent verification and strengthens your compliance position with insurers and regulators.