How to choose the Best UK Fire Door Manufacturer

Choosing the best UK fire door manufacturer means checking that a supplier can prove its products are safe and compliant. The right supplier holds third-party certification, backs every product with test evidence and supplies fully compliant doorsets with the documentation to match. Before you commit to any order, you should be able to verify that the products meet UK building regulations and the duties set out under the Regulatory Reform (Fire Safety) Order 2005. The headings below set out exactly what to look for in a fire doors supplier, starting with the things that matter most.

Check for third-party certification

Of all the fire safety measures in a building, fire doors are among the most used, so the choice of supplier should be based on evidence. The strongest evidence a manufacturer can offer is third-party certification.

A single test shows how one door performed on one day. Third-party certification goes further by auditing the manufacturer’s systems, processes and supply chain, which is what proves products are made to the same standard every time. Look for a scheme backed by a body accredited by UKAS, the national accreditation service appointed by the government. Ask to see certification for the exact product and configuration you are buying. A general statement that the company is certified is not enough.

Ask for full test evidence and a compliance pack

Under the Building Safety Act, a fire door has to come with documentation that proves its performance. A compliant supplier gives you the records that show what you bought and how it should be installed, forming part of the golden thread of building safety information.

At Aluminium Fire Systems, every project comes with a full compliance pack. This includes a compliance agreement covering the correct fixings and openings, a technical guide with the test certificates and classification evidence, and photographs taken throughout fabrication. If a supplier cannot provide documentation like this, treat it as a warning sign.

Remember too that altering a certified door after manufacture, can void its certification and breach fire safety law. The whole assembly needs to be certified, including the leaf, frame, glazing and hardware. Our guide to external fire rated doors explains this in more detail.

Make sure products are tested to current fire standards

Fire doors are tested and classified to set standards, and those standards are changing. The UK is withdrawing the older BS 476 series from Approved Document B in favour of the European standards, with testing to BS EN 1634-1 and classification to BS EN 13501-2 becoming the expected route. Existing BS 476-22 evidence stays valid, but for new work it is sensible to favour products tested and classified to the European standards.

A good manufacturer states the rating clearly for your application and can explain which standard the evidence sits under. Aluminium Fire Systems products are classified to EI standards under the European system, with ratings from EI30 up to EI120 depending on the configuration. There is more on what these ratings mean further down.

Confirm bespoke work stays within the certified field of application

Few projects use only standard sizes, so bespoke capability is a key factor when comparing bespoke fire door manufacturers. A certified manufacturer is issued with a field of application assessment that sets out the range of sizes and configurations it can produce while keeping the tested performance valid. This is what lets a supplier make the bespoke fire doors UK projects need without going beyond the original test evidence.

Bespoke does not mean less safe, as long as every variation stays inside that certified field. When you ask about custom sizes, glazing or finishes, a trustworthy supplier explains how the change stays compliant. Our fire rated aluminium doors are built around certified systems such as the Aluprof MB-78EI system, engineered to allow bespoke doorsets and glazing while holding their rating.

Choose a UK manufacturer you can talk to directly

Buying direct from the manufacturer removes the margin added by intermediaries and shortens the chain of accountability, so you can put technical questions straight to the people who make your doors. Aluminium Fire Systems is the manufacturer and supplies fire rated windows, doors and partitions direct to commercial and residential projects across the UK, so you are buying from the maker. That supports faster lead times and tighter control over quality and documentation. When you compare top fire door suppliers in the UK, ask where products are actually made, who controls quality and how directly you can reach the technical team.

Look at project experience, reputation and aftercare

The people behind a supplier matter too. Look for a track record on projects like yours, clear communication and a willingness to share knowledge. Reputation and aftercare show whether a supplier will still support you once the order is placed. A good fire door company works closely with architects, contractors, developers, fabricators and installers to reach a compliant outcome. A specialist that works only on fire rated products will usually give you more reliable support than a general supplier.

Why there is no single best fire door manufacturer

No one company is right for every project. The best choice depends on the building, the level of fire resistance needed and the material that suits the application. A supplier that is right for a timber internal doorset in a low-rise flat may be the wrong choice for a fire rated glass screen in a hospital atrium. Many people start by asking which company is the best manufacturer of fire rated doors. A better question is which supplier can prove their products are compliant, tested and suitable for your requirements. The criteria above are how you tell them apart.

Understanding fire door ratings

Fire door ratings tell you how long a door has been tested to hold back fire. Knowing them helps you specify correctly and check that a supplier is offering tested performance for the rating you need.

FD ratings and the BS 476-22 standard

FD ratings are the long-established UK classification, most often applied to timber fire doors. The number is the minutes of fire resistance, so FD30 resists fire for at least 30 minutes and FD60 for 60 minutes, with FD90 and FD120 for higher-risk settings. They are based on testing to BS 476-22, which measures integrity, meaning the door’s ability to stop flames and hot gases passing through.

EI ratings and the BS EN 13501-2 standard

EI ratings come from the European system, classified under BS EN 13501-2 and tested to BS EN 1634-1. An EI rating measures two things. The E is integrity, the same flame and gas resistance as an FD rating. The I is insulation, meaning the door also limits the heat passing to the side away from the fire. Because it covers both, an EI rating is a higher specification than an integrity-only rating and the two should never be treated as equivalent. Aluminium Fire Systems products are classified to EI standards, from EI30 up to EI120 depending on the system and configuration.

Matching the rating to the building

The rating you need is driven by the building, its use, its layout and the fire risk assessment, not by preference. As a general guide, 30-minute doors are common on escape routes in homes and lower-risk premises, while 60-minute or higher ratings are used in higher-risk areas, taller buildings and settings such as commercial premises, schools and hospitals. Building Regulations guidance in Approved Document B sets out where fire doors are required and the performance they must achieve.

Choosing the right material: aluminium, timber, composite or steel

The material does not decide whether a door is safe. Every certified fire door has to pass the same tested performance for its rating, whatever it is made from. Material is about fit: the rating you need, the setting, the look you want, the maintenance you can live with and your budget. Here is how the main options compare.

Material	Fire performance	Strengths	Points to weigh up
Timber and composite	Commonly rated to around 30 to 90 minutes, with higher ratings needing specialist cores. Timber chars to form a protective layer and insulates well.	Warm, traditional look, a broad choice of finishes and lower cost at the common ratings.	Can warp or swell in damp or exposed conditions and may need more upkeep depending on the finish.
Steel	The longest durations of the common materials, with some doors reaching two to three hours. Non-combustible.	Very strong, impact and security resistant and hard wearing.	Conducts heat, so it needs an insulated core. Heavier, with a more industrial look and less design flexibility.
Aluminium	Achieves a range of fire ratings when built as a certified system with fire-rated glass or an insulated core. Used for both internal and external doors.	Slim frames, large glazed areas, corrosion resistance and a long service life. Fully recyclable.	The fire rating doesn’t come from the aluminium on its own, the rating belongs to the whole tested doorset, the frame, seals and glazing certified together as one system.

Glazing can be added across these materials using fire-rated glass where vision and light matter, with the insulation performance depending on the glass and frame as a tested unit.

At Aluminium Fire Systems we manufacture aluminium fire doors for both internal and external use. Our doors are built on the Aluprof MB-78EI system, which is certified for internal and external use from EI30 up to EI90, with the MB-118EI system reaching EI120. The same systems also produce screens and partitions, so a project can keep one consistent look across its doors and glazing. To weigh aluminium against the other materials for your scheme, you can browse the full range of fire rated products we make.

Why choose Aluminium Fire Systems

Aluminium Fire Systems specialises only in fire rated windows, doors and partitions, manufactured in the UK and supplied with a full compliance pack on every project. As one of Aluprof’s approved fire partners, we manufacture using systems certified under Certifire, the independent third-party passive fire product scheme that assures performance, quality, reliability and traceability and is recognised by regulatory authorities worldwide as a mark of fire safety. Our products also carry UKCA marking to show they meet UK government regulatory requirements, and the fire rated glass we use is certified by Pyroguard.

We are also members of Fire Aware, an initiative whose members pledge to put end-user safety first in the built environment. Because we manufacture in house and sell direct, you buy straight from the manufacturer with no intermediary mark-up, and you stay supported from specification through to site handover. Whether you need internal doorsets, external doors or fire rated glazing, you can talk through your requirements with a team that works only on fire rated products. To check classifications and product details before you specify, the Aluminium Fire Systems knowledge base is a useful starting point. When you are ready, you can get in touch with the Aluminium Fire Systems team for a quote.

About the author

This article was written by Lauren Walker, Managing Director of Aluminium Fire Systems. With extensive experience across the UK fire safety and manufacturing sectors, Lauren is focused on upholding the highest standards of product quality and compliance, helping clients protect their buildings and the people inside them. Her work centres on making fire safety decisions clearer and easier for the architects, contractors and developers that Aluminium Fire Systems supplies.

Frequently asked questions about choosing the best UK fire door manufacturer