As technology has evolved and buildings and materials have become more advanced, so too has fire door design and functionality. In this blog post, we’ll explore the latest innovations in fire door materials and what this means for fire safety here in the UK.

Traditional vs. Modern Materials: How Fire Doors Have Evolved

The modern fire door as we know it hasn’t always been this way. Ruins from ancient civilisations, like Ancient Egyptians and the Romans, suggest that door-like barriers did exist back then. But these would have been predominantly made from stone, wood and other sturdy materials.

By the Middle Ages, doors were an integral part of buildings, with wooden door frames and planks with metal hinges and locks more commonplace. Fast forward to the late 18th century, design advancements like mortise locks, automatic closers, and hinges enabled doors to become much more secure and functional.

Now, modern fire doors are made using safe and approved materials – most commonly, timber. This is because it’s versatile, easily customisable, readily available, sustainable, and provides predictable char rates.

With its high temperature tolerance, steel is a solid choice for certain environments where hygiene is essential like commercial kitchens or healthcare settings. The strength and durability of a steel fire door also makes it ideal for buildings where high security is required, such as prisons.

But composite fire doors are increasingly popular. Made from a combination of fire-resistant materials like gypsum, steel and vermiculite boards, composite fire doors are a strong durable product that can withstand daily wear and tear and resist warping and cracking.

Innovative Fire Door Materials in Use Today

Intumescent materials

Intumescent materials have been used in various forms for some time. But it wasn’t until chemical advancements in the mid-20^th century that manufacturers started using them for fire doors and other fire-safety products. 

So, what do intumescent materials do for fire doors? Essentially, intumescent materials expand when exposed to high temperatures, plugging any gaps between the frame and door so fire and smoke can’t escape.

You’ve probably already heard of intumescent strips and seals for fire doors. But intumescent paints and coatings, intumescent core materials and intumescent glazing are also commonly used for fire doors.

Fire-resistant glass

The main purpose of glazing on a fire door is to provide vision through the door leaf. But normal glass can only withstand temperatures of around 150 – 200°C before it starts to weaken or break.

That’s why manufacturers use fire-rated glass. Good quality fire-rated glass is specially designed to withstand much higher temperatures – in some cases exceeding 1000°C.

There are lots of different types of fire-resistant glass you can use. And which one you opt for depends on where the door is going to be used and the fire rating it’s designed to meet.

Common types of glazing in fire doors include wired glass, ceramic glass, specially treated tempered glass and intumescent-laminated glass.

Advancements in glazing over the years means it’s now possible to install a full-view glass door like these fire-resistant glazed doors at The Angel Hotel in Bury St Edmunds. As well as meeting fire regulation standards, the use of fire-resistant glass doors like these give architects and specifiers more options when it comes to creative design.

Composite materials 

Composite fire doors are made from a combination of materials, engineered to provide the best possible performance in terms of fire resistance, durability, and aesthetics.

The core of a composite fire door typically consists of one or more fire-resistant material, such as mineral wool, gypsum, or particleboard.

The core is then covered with layers of other materials like wood veneer, high-pressure laminate, or PVCu (unplasticized polyvinyl chloride).

The combination of materials in a composite fire door result in a strong, durable product that can withstand daily wear and tear, as well as resist warping and cracking.

They offer excellent fire resistance, with ratings ranging from 30 to 120 minutes. And because they can be designed to mimic the appearance of solid wood, they’re an attractive option for various architectural styles and building types.

What’s more, composite fire doors offer good thermal and acoustic insulation so are a great choice for quieter environments and organisations with energy efficiency targets to achieve.

Benefits of Innovative Fire Door Materials

Fire doors have evolved substantially over the years. As well as enhancing fire door effectiveness and safety, these changes have helped to transform sustainability and building design. Let’s look in more detail at some of the key benefits of using innovative materials for fire doors here:

• Enhanced fire resistance – intumescent materials, composites, and fire-resistant glazing have been specifically manufactured to enable fire doors to withstand fire and high temperatures for longer periods – allowing them to do their crucial job of compartmentalisation.
• Durability – fire doors built with innovative materials are more resistant to damage, moisture and other environmental factors. This is particularly important in high-traffic areas or harsh environments like hospitals.
• Environmental sustainability – many innovative materials are designed to be more eco-friendly. And because innovative materials are more durable and therefore have a longer lifespan, they minimise waste by reducing the need for replacements.
• Better design options – fire doors haven’t always been created with design in mind. But thanks to modern innovations, fire doors now come in a range of finishes, colours and styles, enabling them to complement any number of architectural designs.
• Regulatory compliance – innovative materials have been specifically developed to meet (or in some cases, exceed) stringent fire safety standards and regulations.

Future Trends and Environmental Impact

Today, advancements in technology are paving the way for companies to explore smart fire doors. In the not-so-distant future, these next generation fire doors could include remote monitoring of a door’s status to provide live updates about any issues; sensors that detect smoke or fire; closing mechanisms that activate in the event of a fire; and integration with security systems to regulate who can pass through.

Research is also ongoing into materials that might offer even better fire protection properties. Two recent studies discovered how mycelium (a network of fungal threads) could be used to create compressed sheets of fire-retardant material. The hope is that such sheets could replace flammable cladding panels like the ones that contributed to the deadly Grenfell Tower fire.

In addition to this, innovations in intumescent technologies and new composites are leading to the development of even more sophisticated materials that can improve the performance and fire resisting properties of a fire door.

To conclude

As you can see, the fire door industry is constantly evolving – driven by a collective desire to make buildings safer and sustainable, while giving more flexibility to architects and specifiers when it comes to design options.

But keeping on top of all these constant changes and new developments can be tricky. Which is why we always recommend regular training.

Here at UK Fire Door Training, we have five specially designed courses to equip you with the skills and knowledge you need to install, maintain and inspect fire doors with confidence – as well as keep you up to date with industry or regulatory changes.

All our courses take place online, allowing you to learn at your own pace from wherever you’re based. We also go the extra mile to ensure our courses are user-friendly and cater to people with special educational needs, making sure every trainee gets the attention they deserve.

Browse our online fire door training courses here.