Project‑Specific Fire Testing for Bespoke Fire Doors: A Practical Guide (NZ)

This guide outlines what to consider, how to plan, and the key steps involved so your custom fire door design can be tested, evidenced, and prepared for consent.

Can You Achieve a Bespoke Fire Door Design?

Yes, with the right process in place.
Engage with a fire door manufacturer early to confirm what can be built and tested. Early collaboration helps ensure your design intent—whether related to finishes, sizing, hardware, or glazing—translates into a testable prototype that can be validated for compliance.

Key Considerations for Project‑Specific Fire Testing

1) Lead Times: Engage Early

Project‑specific testing has long lead times due to prototype development, laboratory scheduling, and report issuance. Early engagement helps:

• Secure a test window
• Coordinate procurement of materials and hardware
• Reduce programme risk for consent and construction

2) Design Clarity and Shop Drawings

Clarity on the final design and finishes is critical. As part of test preparation:

• Shop drawings are developed and iterated with you
• The manufacturer will advise which elements are achievable and which may need adjustment to align with testable configurations
• The goal is to get as close as practical to the design vision while protecting compliance

3) Material Availability

Bespoke designs often involve special materials (e.g., veneers, laminates, unique cores, or hardware) that may be indented or imported.

• Confirm availability and lead times early
• Ensure there’s enough stock for both the fire test prototype and the full project
• Avoid specifying materials that could jeopardise programme or consistency with the tested build‑up

4) Possibility of Failure

Fire testing carries inherent risk – there is never a guaranteed pass.
To manage this:

• Take manufacturer guidance based on prior test experience
• Be prepared to iterate the prototype if results require a re‑test
• Allow contingency in programme and budget for adjustments and additional testing if needed

5) Compliance Requirements

Compliance is non‑negotiable. A project‑specific door set must:

• Be tested against the relevant New Zealand standard (commonly NZS 4520:2010 for fire‑resisting door sets, depending on scope and pathway)
• Demonstrate that the tested configuration matches the as‑built door set (materials, core, frame, seals, glazing, and hardware)
• Produce a formal test report to support building consent

Note: Design intent cannot override compliance; where necessary, details are adjusted to meet tested parameters.

6) Aesthetics (Finish and Detailing)

Aesthetics matter, and many visual outcomes can be achieved within a compliant system. To keep the look on track:

• Provide clear finish schedules (paint‑grade, veneer, HPL, etc.)
• Discuss frame integration with the wall type
• Confirm that any vision panels, trims, or profiles can be accommodated within a tested configuration

7) Hardware: Lock It In Early

Hardware decisions are critical and must be confirmed upfront:

• Nominate supplier and exact models early in design
• Ensure hardware is compatible and testable with the door build‑up
• Understand that once hardware is tested with the prototype, changing it later can invalidate the evidence and create non‑compliance risk

Project‑Specific Fire Testing: A 5‑Step Process

1. Client Consultation
   Capture design intent, performance requirements, wall types, ratings, hardware preferences, and project timelines.

2. Specification / Design Review
   Assess drawings and schedules; identify gaps, risks, and pathways to a testable configuration.

3. Shop Drawings
   Produce detailed drawings for approval; iterate until design and test requirements align.

4. Prototype Manufacture
   Build the door set exactly to the approved drawings using the confirmed materials and hardware.

5. Fire Test Conducted
   Undertake the test at an accredited lab. After a successful test, await the final test report before locking specifications and submitting for consent.

After a Successful Test: What Happens Next?

Even after a positive result, you cannot proceed to production until:

• The fire test report is finalised and issued to the manufacturer
• The as‑built specification is frozen to match the tested configuration
• Documentation is prepared for building consent and downstream installer declarations

This ensures traceability from the tested prototype to the installed door sets.

Summary

• Bespoke fire doors are achievable when aesthetics and compliance are balanced from the outset.
• Early engagement with a manufacturer, clear design documentation, and realistic lead times are essential.
• Plan for the possibility of re‑test, lock in hardware early, and keep all materials aligned with the tested configuration.
• Only proceed to consent and production once the final test report has been received and documented.

If you’d like support working through a project‑specific fire test, we can help coordinate design reviews, shop drawings, prototype manufacture, and documentation.