Fire ratings are a critical aspect of building safety, yet they are often misunderstood. These ratings are not just numbers on a label, they are a vital measure of a product’s ability to withstand a fire and protect lives. Understanding the importance of fire ratings is the first step towards ensuring your building is safe, compliant and secure. From protecting occupants to maintaining the structural integrity of a building, the role of fire-rated products is indispensable.
This guide will walk you through what fire ratings mean, why they are so essential for your property and how to choose the right products for your project.
What a Fire Rating Actually Means
A fire rating measures the duration for which a passive fire protection system, such as a fire door or window, can withstand a fire. The rating is given in minutes, for example, 30, 60, 90 or 120 minutes. This indicates how long the product can perform its specific function during a fire test.
The performance criteria are mainly concerned with two factors: integrity and insulation.
- Integrity (E): This is the ability of the product to prevent the passage of flames and hot gases. If a window has an integrity rating of E60, it will block fire and smoke from passing through it for at least 60 minutes.
- Insulation (EI): This is the product’s ability to reduce the transfer of heat from the fire side to the non-fire side. This is crucial for protecting escape routes and ensuring that materials on the non-fire side do not spontaneously ignite. At Aluminium Fire Systems, we specialise in EI-rated products, such as our EI 60 fire rating systems, because they offer a higher level of safety by controlling heat transfer.
The Critical Reasons Why Fire Ratings are Important
Specifying and installing the correct fire-rated products is not just a recommendation, it is a fundamental requirement of modern construction for several key reasons.
Protecting Lives
The primary purpose of fire-rated products is to save lives. By creating fire-resistant compartments within a building, these systems slow down the spread of fire and smoke. This process, known as compartmentation, provides occupants with more time to evacuate safely. Fire-rated doors, windows and partitions maintain clear and protected escape routes, preventing a fire from quickly engulfing an entire building.
Legal and Regulatory Compliance
UK Building Regulations mandate the use of fire-rated products in specific areas of a building. These regulations are in place to ensure a minimum standard of safety for all occupants. Failure to comply with these legal requirements can lead to severe consequences, including legal action, substantial fines and the invalidation of your building’s insurance. Our fire resistant products help you meet these standards, and our compliance pack provides the necessary documentation to prove it.
Protecting Property and Assets
A fire can cause devastating damage to a building and its contents. Fire-rated systems help to contain a fire to a specific area, minimising damage to the overall structure and protecting valuable assets. This can significantly reduce the financial impact of a fire and make the subsequent repair work more manageable. For businesses, this protection extends to critical equipment and documents, supporting business continuity.
Maintaining Structural Integrity
Fire can weaken the structural elements of a building, leading to a potential collapse. Fire protection measures, including fire-rated glazing and partitions, help protect key structural components from the intense heat of a fire. This maintains the building’s stability for a longer period, providing more time for emergency services to control the blaze and conduct rescue operations.
The Risks of Ignoring Fire Ratings
Ignoring these ratings isn’t just a paperwork error, it is a critical safety failure. Using a non-rated or incorrectly rated product (e.g. installing an E30 window where an EI60 is required) can have severe consequences:
- Prosecution: Under the Regulatory Reform (Fire Safety) Order 2005, responsible persons can face unlimited fines and prison sentences.
- Insurance Avoidance: In the event of a fire, non-compliant products can invalidate your building insurance.
Project Delays: Building control officers will refuse to sign off on non-compliant installations, leading to costly tear-outs and delays.
Understanding Euroclass Fire Ratings (A1 to F)
While fire resistance (minutes) tells you how long a window holds back fire, the reaction to fire classification tells you if the material itself will burn. In the UK and Europe, this is defined by BS EN 13501-1, widely known as the Euroclass system.
Understanding these codes ensures you don’t accidentally specify a combustible material in a high-risk zone:
- A1 (Non-Combustible): Materials that do not contribute to a fire at all (e.g. concrete, steel, glass).
- A2 (Limited Combustibility): No significant contribution to the fire load.
- B, C, D, E: Varying levels of combustibility, from very limited contribution (B) to high contribution (E).
- F: High flammability (materials that should not be used in fire-critical areas).
At Aluminium Fire Systems, we focus on high-performance materials like aluminium and specialist glazing which sit at the top of these safety classifications.
Choosing the Right Fire-Rated Products
Selecting the correct fire-rated products is essential. The required rating for a specific application will depend on the type of building, its use and the specific location of the product within the building. For example, a 90 minute fire rated window might be required in a high-risk area, whereas a 30 minute fire rated window may be sufficient for another.
We offer a range of systems to meet various needs, including our versatile MB-78EI system, which is used for internal and external fire rated glass partitions, and the robust MB-118EI system for applications requiring up to 120 minutes of fire resistance. It is always best to consult with fire safety experts to ensure the products you choose are fit for purpose and fully compliant.
Standards: BS 476 vs BS EN 13501
Our products are rigorously tested against leading British standards and European standards to ensure maximum safety. This includes BS 476 Part 22, the traditional UK standard still legally accepted in certain refurbishment contexts.
However, the industry is heavily moving towards the BS EN 13501 series (European Standards). While BS 476 remains valid for specific legacy applications, the government’s post-Grenfell guidance and modern best practice favour the stricter, harmonised European testing methods. We prioritise these EN standards (such as BS EN 1634-1 for doors and BS EN 1364-1 for partitions) to ensure your building meets the highest modern benchmarks for safety and future-proofing.
We work with independent certification bodies to verify these standards, providing a full compliance pack with every project to demonstrate complete adherence to these rigorous criteria.
Project Spotlight: Modernising the Ladywell Centre
Fire ratings are crucial when repurposing existing buildings for new uses. We were proud to partner with EvaBuild on the transformation of the former Ladywell Shopping Centre in Newtown into a vibrant mixed-use space featuring offices, cafes and bars.
The challenge was to update the 1981 structure to meet stringent modern fire safety standards without sacrificing the sleek, contemporary aesthetic designed by the architects.
The Solution
We supplied and installed our Aluprof MB-78EI system, delivering:
- EI30 Protection: 30 minutes of integrity and insulation for both windows and doors.
- Smoke Control: Integrated smoke-proof thresholds to minimise smoke spread during an emergency.
- Aesthetics: High-clarity Polflam glazing that maintained the open, transparent feel of the new design.
This project proves that high-performance fire ratings do not mean compromising on design. The result is a fully compliant, safe, and visually stunning destination for the local community.
Ensuring Long-Term Safety: Maintenance Matters
A fire-rated window is only effective if it is maintained correctly. Over time, seals can degrade and hardware can loosen. To ensure your fire ratings remain valid for the lifespan of the building:
- Regular Inspections: Check intumescent seals and gaskets for damage annually.
- Genuine Parts: Never replace a handle, hinge or screw with a non-fire-rated equivalent.
- Documentation: Keep your Compliance Pack (which we provide with every project) safe. It contains the evidence of performance required for future fire risk assessments.
Don't Just Take Our Word For It
Compliance and safety are about trust. Here is what industry professionals say about working with Aluminium Fire Systems:
“AFS provided their products on time, in full to a high standard complete with a comprehensive pack of info. Looking forward to working with you again in the near future.”
– Andrew Stapleton, APIC
“The window itself is great! Fantastic quality in manufacturing and it went in like a dream, the client was also really impressed with all the paperwork that came with it. Very impressed with our first order.”
– James Killigrew, Associated Glass
“From 1st point of contact through to the end, very responsive, could answer every question we had, answered any query straight away, always helpful and on time with delivery. Concluding with a fixing pack in a box with everything to make fitting quick and easy. Spot on.”
– Richard Fairclough, GoldSeal
Why Choose Aluminium Fire Systems?
At Aluminium Fire Systems, we are one of the UK’s leading experts in manufacturing and supplying fire rated aluminium windows, fire rated doors and fire rated glass partitions. We are dedicated to providing products that not only meet but exceed safety standards.
Our streamlined project management allows us to offer fast lead times and on-time nationwide delivery, ensuring your project stays on schedule. As manufacturers, we provide competitive pricing without ever compromising on the quality or integrity of our products. All our systems are manufactured here in the UK and are fully compliant with the latest regulations. We provide a full compliance pack with every project, giving you complete peace of mind.
Fire Ratings Frequently Asked Questions
What is the difference between fire resistance and fire protection?
Fire resistance refers to the ability of a material or system to withstand fire for a specified period. Fire protection is a broader term that includes active measures like sprinklers and alarms as well as passive measures like fire-rated walls, doors and windows.
Can I get a 1 hour fire rated window?
Yes, 1 hour fire rated windows are a common requirement for many buildings. They are designed to provide 60 minutes of integrity and insulation, forming a crucial part of a building’s overall fire strategy.
Are all fire rated doors the same?
No, fire rated aluminium doors come with different fire ratings, such as 30, 60, 90 or 120 minutes. The required rating depends on the door’s location in the building and the specific fire safety requirements of that area. They can also differ in their construction and the type of glazing used.
What is the purpose of fire rating?
The primary purpose of a fire rating is to verify how long a product or system can withstand fire, thereby ensuring it can effectively delay the spread of flames and smoke. This creates vital time for occupants to evacuate safely and helps protect the building’s property and structural integrity.
What does a 90 90 90 fire rating mean?
This rating refers to three performance criteria measured in minutes: Structural Adequacy, Integrity, and Insulation (often simplified as REI 90 in European standards). A 90/90/90 rating indicates that the building element can support its load, prevent the passage of flames, and limit heat transfer for 90 minutes each. For non-load-bearing elements like windows, the first number is often not required, resulting in a classification like EI 90.
How do fire ratings affect safety?
Fire ratings directly impact safety by ensuring that the materials used in a building can perform their specific function during a fire. A correctly rated product maintains compartmentation, keeping escape routes clear of smoke and heat, which significantly increases the chances of safe evacuation and reduces the risk of building collapse.
What does a 60-60-60 fire rating mean?
Similar to the above, a 60/60/60 rating means the element is tested to withstand fire for 60 minutes across all three criteria: Structural Adequacy, Integrity and Insulation. This ensures that for one hour, the structure remains stable, blocks the passage of fire and insulates against dangerous heat levels.
About The Author
Lauren Walker is the Managing Director of Aluminium Fire Systems. With extensive experience in the fire safety and construction industry, Lauren is committed to raising awareness about the importance of high-quality fire protection systems and ensuring every client receives compliant, reliable products.