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What are Thermally Broken Aluminium Windows & Doors?

Lifestyle

Thermally broken aluminium windows and doors have become a top choice for modern homes, offering the perfect blend of design, efficiency, and long-lasting performance. In the past, aluminium frames were often criticised for poor insulation, allowing heat to escape and cold to seep in. However, with the introduction of thermal break technology, aluminium has re-emerged as a high-performing material option that excels in both energy efficiency and insulation.

At Express Bi-Folding Doors, we combine this advanced technology with sleek, contemporary designs to create windows and doors that meet the highest standards of quality. Our products not only help reduce energy bills but also make your home more comfortable year-round. Used in both residential and commercial projects around the world, our aluminium frames offer an ideal mix of strength and style.

aluminium sliding doors

What is Thermal Break Technology?

Thermal break technology is a key method for increasing insulation in modern window and door frames. Improving the thermal resistance of a frame is a crucial step in boosting a window’s overall energy efficiency, especially its ability to reduce heat loss, which is measured by the U-value. Addressing thermal bridging (the process where heat energy flows from one side of the glazing to the other) is a way to reduce a major source of energy loss. According to RJ Energy, thermal bridging can account for 20-30% of heat loss in a building.

This innovative technology works by inserting a low-conductivity material, such as a polyamide or polyurethane bar, into the metal frame, and it’s this material that creates a barrier to prevent heat from passing through the frame. By separating the interior and exterior sections, thermal breaks limit heat flow between your home and the outside. This not only helps keep your home warmer in the winter and cooler in the summer but also reduces the energy required for heating and cooling. With its ability to improve insulation and lower energy costs, thermal break technology has become an essential feature of modern, energy-efficient living.

Large luxury home with aluminium windows and doors

Which Materials Can Be Thermally Broken?

Metal frames like aluminium and steel are among the most common materials to feature thermal break technology. While modern aluminium frames typically incorporate this innovation, it’s always worth confirming with your supplier. Aluminium frames with thermal breaks often meet and exceed energy performance standards, helping reduce energy bills while keeping your home more comfortable. When combined with double or triple glazing and upgraded with low-emissivity (Low-E) coatings, heat transfer can be reduced by 30% to 50% . At Express, we take it even further by incorporating a warm edge spacer bar which can reduce heat loss by up to 94%.

Steel frames, on the other hand, have a longer history, with many systems originally developed before energy efficiency became a priority. As a result, most don’t include thermal breaks, which should be a consideration before purchasing. If you’re after the industrial look of a steel frame, consider our aluminium steel-look bifold doors and windows. They combine the sleek, modern lines of steel with the advantages of aluminium, including improved insulation, durability, and easy maintenance.

industrial look bifold doors

The Benefits of Thermally Broken Aluminium Windows & Doors

While thermally broken aluminium windows and doors may come with a higher initial cost, they offer long-term value through several significant advantages:

Large, comfortable living room with aluminium windows

1) Maximise Comfort & Slash Energy Bills

Thermally broken aluminium frames are highly effective at retaining heat, even in the coldest months. By reducing the transfer of heat through the frame, they help maintain a consistent indoor temperature, which means less energy is needed for heating and cooling. Research from Greenmatch highlights that energy-efficient windows can cut a home’s heating and cooling capacity loss by 25% to 30%, leading to noticeable savings on utility bills over time.

2) A Greener Home

In addition to saving energy, these windows and doors play a vital part in reducing environmental impact. When combined with advanced insulation features such as high-performance double glazing, they minimise heat loss, making your home more efficient to run. This not only lowers energy costs but also reduces your carbon footprint, supporting a greener, more sustainable future.

Modern house with aluminium doors and windows
sliding doors

3) Reduced Condensation

A major benefit of thermally broken aluminium windows and doors is their ability to significantly reduce condensation. In older aluminium frames, thermal bridging often leads to moisture buildup on the surface, causing condensation. By adding a thermal break to the frame profile, this issue is resolved, effectively blocking warm, moist air from hitting the cold surface of a thermal bridge. As a result, moisture is prevented from forming, which can otherwise lead to mould growth. With continuous improvements in this innovative technology, modern aluminium windows are much more efficient, helping to keep condensation at bay and creating a more comfortable indoor environment.

4) Built to Last: Strength Meets Longevity

Along with boosting energy efficiency, thermally broken systems also improve the strength and longevity of metal frames. By incorporating a thermal break, the frame becomes more solid and resistant to wear and tear over time. This increased sturdiness, combined with the natural resilience of aluminium, not only extends the life of the frame but also improves security, giving homeowners confidence that their doors and windows are built to withstand the elements.

front door

5) Enjoy a Quieter Home

Double glazing paired with thermal breaks helps create a quieter home by reducing the amount of external noise that enters. The integration of a low-conductivity material between the aluminium profiles contributes to improved soundproofing. Whether you’re in a lively city or near a busy street, thermally broken aluminium windows and doors help to create a peaceful, quieter space indoors. At Express, our warm edge spacer bar further reduces noise by up to 2dB, making your home even more serene.

6) Low Maintenance for a Hassle-Free Home

Unlike timber or PVC, which can expand and contract with the weather, aluminium remains stable, helping thermally broken systems keep their shape and performance over time. This consistency reduces the risk of issues like warping or cracking, so the frames maintain their appearance and energy efficiency with minimal upkeep. With its durable, weather-resistant qualities, aluminium offers a long-lasting solution that requires little maintenance while continuing to perform well for years.

aluminium sliding doors in a living room

7) Boost Your Home’s Value with a Smart Investment

Opting for thermally broken aluminium windows and doors is a smart choice that can significantly increase the value of your property. These windows not only improve your home’s energy performance and comfort but also add appeal for potential buyers. In today’s competitive real estate market, energy-saving and low-maintenance features are highly desirable.

Upgrade Your Home with Thermally Broken Aluminium

At Express, we’re proud to offer high-quality aluminium systems that blend performance, energy efficiency, and contemporary design. Whether you’re in the market for bifold doors, sliding doors, or fixed and casement windows, our thermally broken doors and windows are built to meet the highest industry standards, with U-values as low as 1.1.

For more details, our expert team is ready to help you every step of the way on your home renovation journey. Reach out today to get a personalised quote, consult with our knowledgeable staff, and explore our showrooms to explore our stunning range of products. We’re here to make your vision a reality!

Leeds showroom

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