Is 3rd party accreditation a legal requirement on manufacturers supplying fire doors.

In short: No — for manufacturers of fire doors in the UK, obtaining third-party certification/accreditation is not in itself a legally mandated requirement under the Building Regulations. However, the manufacturer must still provide proof that the door assembly meets the required fire-resistance standard (via appropriate testing of the full door set) and that it is manufactured to that design.


✅ What is required by the regulations


❗ What third-party certification means and the implications

🔍 1. What “Third-Party” Means

  • A third-party is an independent certification body, not connected to the manufacturer or installer.

  • Their job is to objectively verify that the product performs as claimed.

  • Examples of third-party certification bodies in the UK and EU include:

    • BM TRADA (Q-Mark)

    • Certifire (Warringtonfire)

    • BSI Kitemark

    • IFC Certification

🔥 2. What They Check

Third-party accreditation usually covers:

  • Fire resistance testing (e.g., 30, 60, or 120 minutes fire rating)

  • Smoke control (if applicable)

  • Door assembly integrity (door leaf, frame, seals, hinges, glazing, and ironmongery)

  • Manufacturing consistency (they audit factories to make sure every door is built the same way as the tested one)

  • Installation and maintenance quality

🧾 3. Why It Matters

  • Assurance of performance: You know the door has been independently tested and proven to perform in a fire.

  • Legal compliance: Helps ensure compliance with building regulations (e.g., Approved Document B in the UK).

  • Traceability: Certified doors have a label or plug with a unique ID you can check against a certification database.

  • Reduced liability: Building owners, specifiers, and contractors have documented proof that the door meets standards.

🚪 4. Without Third-Party Accreditation

If a fire door isn’t third-party certified:

  • You’re relying solely on the manufacturer’s claim.

  • There’s no independent verification that it will perform as required in a fire.

  • It can be harder to prove compliance to building control or insurers.

✅ Example

A door with a Certifire label might read:

Certifire Approved CF1234 – FD60S – Installed per manufacturer’s instructions.

That tells you it’s been:

  • Tested for 60 minutes (FD60)

  • Smoke-sealed (S)

  • Certified by an independent body (Certifire)

  • “Despite this, there is still no mandatory requirement under Building Regulations for the use of third‐party certified fire doors…” probuildermag.co.uk+1


🎯 What this means for manufacturers


🔍 Why third-party certification is strongly recommended