Define the Required Fire Performance and Evidence Path
Fire performance is defined by the building’s fire-resistance requirements for the element, and the evidence path is the documentation that supports it — a complete tested or assessed system from a manufacturer, or an engineering assessment where applicable. The requirement and the evidence path are confirmed before materials are selected, because the two must match.
The requirement is confirmed with the design and certification team, because it determines which systems are eligible: a wall in one location may need a higher level of fire performance than the same wall a few metres away. The evidence path is then named in the specification — which tested or assessed system will be used and which documentation will be produced at inspection. A system selected before the requirement is defined is a system selected for the wrong question.
Select a Complete Tested or Assessed System
A fire-rated wall or ceiling is a system, not a product: framing, lining, fixings, insulation, sealing and detailing are specified together and their performance comes from the combination. Selecting a board without the supporting system documentation provides no performance evidence, so the selection is made from a documented system, not from a material name. The system documentation also defines what is inside the assembly — framing gauge and spacing, lining thickness and layers, fixing type and spacing, insulation where specified, and sealants — because changing any one of these changes the performance. The documentation is checked against the project’s actual construction before installation, not after.
The selection also checks applicability: the tested system must match the project’s actual conditions — wall height, framing spacing, lining type, fixings and the penetrations that will pass through it. A system tested for one configuration does not automatically apply to another, and the difference is documented rather than assumed. The designer records the basis of selection so a reviewer can trace the decision to its evidence.
Maintain Continuity at Junctions and Interfaces
Fire-rated construction is continuous or it is not fire-rated. Junctions between walls and ceilings, walls and floors, and walls and walls must follow the system’s tested details, including how each junction is sealed and what the edge conditions are. A break at a junction is a performance break, even when the rest of the system is correct. Junction details are the first thing an inspection looks for: how a rated wall meets the slab above, how a rated ceiling meets the external wall, and how two rated walls intersect at a corner. Each junction follows its own tested detail, and the details are shown on the drawings so the installer is not improvising on site.
Continuity also includes interfaces that are easy to forget: where a rated ceiling meets a non-rated wall, where a rated wall stops at a glazing line, and where a fire door frame connects to the lining. Each interface follows its own tested detail, and the drawings mark every one so the installer can see the full scope before starting. A junction list, checked at inspection, is the practical way to make continuity auditable.
Control Service Penetrations and Access Openings
Cables, ducts, pipes and access panels pass through fire-rated elements, and every one must use the system’s tested or assessed penetration details with the appropriate sealing. Penetrations are detailed before installation — “fire-stop it later” is how continuity is lost. Access openings use rated panels or hatches that preserve the element’s performance. The penetration schedule is part of the pre-lining inspection: every opening is listed, its sealing detail named and its installation verified before the lining is closed. Cables added later — by a different trade, after the rated system is complete — are a common way continuity is lost, so post-installation additions follow the same control.
The schedule is controlled through the project: every trade that adds a cable, duct or outlet after the schedule is approved must route it through the same approval. This applies to changes made during construction and to post-handover work, which is why the register stays live. Access openings are located and sized before lining, so the rated detail is built in rather than retrofitted.
Manage Product Substitutions and Site Changes
A substitution — different board, frame, fixing or sealant — changes the system and must be re-verified against the tested or assessed assembly before it is installed. Site changes are managed the same way: recorded, assessed and approved, with the evidence file updated. Unapproved substitution is how a rated system becomes an unrated one without anyone noticing.
The substitution process is written into the contract: who may propose a change, what evidence the substitute must produce, who approves it, and how the approval is recorded. A site change that affects the system — a different ceiling height, an added penetration, a framing adjustment — triggers the same process, because the system’s validity depends on the actual construction. Unapproved changes are documented as deviations, not hidden.
Inspect the System Before It Is Concealed
The inspection happens before the system disappears behind linings or finishes: framing and fixings, lining installation, sealing at junctions, penetration treatment and access openings are checked against the system documentation, with photographs and sign-off recorded. Once concealed, the continuity cannot be verified or corrected cheaply. Inspection includes the items that are easy to miss: sealant continuity at junctions, the correct screws at the specified spacing, insulation present where the system requires it, and penetrations sealed to the detail. Each is recorded with photographs and a sign-off, and the register is updated so the evidence matches what was built.
Inspection is a gate, not a courtesy: the certificate of inspection states what was checked, against which documentation, and by whom, and it is issued before the lining closure. The same gate applies to phased construction — each phase is inspected before its concealment, so the register accumulates evidence as the building goes up. A later inspection cannot verify what is already hidden.
Repairs, Alterations and Records After Handover
After handover, any repair or alteration to a fire-rated element must follow the same system details and be documented. Records are retained for the life of the element — system documentation, inspection records, penetration details and approved changes — so future work starts from evidence instead of memory. Record retention is a responsibility, not a formality: the register is handed to the owner or facilities team, and changes over the building’s life are appended to it. A fire-rated element whose records are lost is an element that must be re-assessed before future work.
The register’s purpose is continuity across the building’s life: when a new cable is routed, a panel is replaced or a wall is altered, the change is recorded against the element it affects. This is how a fire-rated system remains provable after decades of maintenance. The owner or facilities team appoints who maintains the register, so the responsibility does not lapse with the handover.
| Evidence item | What it must show | Held by | Review point |
|---|---|---|---|
| System documentation | Complete tested or assessed assembly details | Designer and builder | Before selection and installation |
| Junction details | Wall-ceiling, wall-wall and wall-floor continuity | Designer and installer | Before concealment |
| Penetration schedule | Every service opening with its sealing detail | Designer and trades | Before lining closure |
| Substitution record | Approved changes re-verified against the system | Builder | At each change |
| Inspection records | Photos and sign-off before concealment | Builder | At each hold point |
| Post-handover changes | Repairs and alterations following system details | Owner and facilities team | For the life of the element |
Frequently Asked Questions
What evidence should a fire-rated system be based on?
A complete tested or assessed system from a manufacturer or engineering assessment that matches the building’s fire-resistance requirements. The evidence is the system documentation, not the name of a board.
Why does continuity matter more than the board alone?
Because a fire-rated element performs as a continuous system. A single gap at a junction or penetration breaks the performance, regardless of the lining used. Continuity is verified before the system is concealed.
How is a substitution handled?
Only by re-verifying the substitute against the tested or assessed assembly, recording the change and updating the evidence file. Substitution without re-verification voids the performance claim.
What records should be retained after handover?
System documentation, inspection and sign-off records, penetration details, approved substitutions and any post-handover repairs. They are kept for the life of the element so future work can start from evidence.
For fire-rated construction that can be proven, build the evidence register and inspect before concealment, then contact CeilingPro for an assessment review and project quote.
