Whether you are choosing bifold doors for an extension or are replacing bifold doors with a new set - thermal efficiency is an important consideration for any type of home. Origin is the leading manufacturer of luxury aluminium bifold doors, and our bifold doors provide exceptional thermal performance.
This guide explores how thermal efficiency in bifold doors is calculated, focusing on the factors that make Origin's products exceed standard requirements.
In this guide:
Read the meaning of bifold door thermal efficiency, and what U-Values are.
Find out why Origin Bifold Doors offer exceptional thermal efficiency.
Read what factors can determine bifold door thermal efficiency.
We answer common queries on bifold door thermal efficiency.
Read the benefits of choosing Origin Bifold Doors.
What is bifold door thermal efficiency?
Thermal efficiency in bifold doors is a measure of a door’s ability to retain heat and resist thermal energy transfer. This is quantified through the U-Value, which represents the rate of heat transfer through a door. The lower the U-Value, the better the door's insulation properties.
Thermal efficiency can be determined by a range of different factors, including the door frame material, whether the door has a thermal break, door glazing, weathertight seals, and more. Origin’s aluminium bifold doors are engineered with precision to achieve low U-Values, ensuring optimal thermal efficiency.
Read our guide to choosing a high-quality bifold door here.
What makes Origin Bifold Doors thermally efficient?
Aluminium is inherently a highly conductive material; however, at Origin we integrate thermal breaks made of polyamide, a type of nylon, into our bifold doors. These breaks are placed between the inside and outside aluminium profiles to reduce heat transfer. This design significantly lowers the U-Values and enhances the thermal insulation of the doors.
To prevent draughts and water ingress, our aluminium bifold doors also include superior weathertight seals. These seals play a critical role in maintaining the internal environment, thereby improving the energy efficiency of the building.
At Origin, we also offer both double and triple glazing options for our bifold doors. These glazing solutions reduce heat loss in the winter and limit heat gain in the summer, contributing to a more stable indoor temperature throughout the year.
Explore the OB-36+ Contemporary External Door
Our OB-36+ Contemporary External Door is a modern take on a well-loved design, offering impressive sightlines of just 36mm. Already 2025 Future Homes Standard Compliant, it is a great option for futureproofing your home. Offering exceptional thermal performance, our Contemporary External Door is available in U-Values as low as 0.87 W/m²K.
Find out more about our Contemporary External Door here or contact your local installer today.
Exceeding British building regulations
Origin’s commitment to excellence is evident, as our bifold doors exceed the British Building Regulations for thermal efficiency. The regulations set benchmarks for U-Values depending on the type and location of the door. By surpassing these standards, we ensure that our bifold doors offer superior insulation, reducing heating costs and enhancing comfort for homeowners. Our aluminium bifold doors are available from U-Values of only 0.87 W/m²K.
Calculating bifold door thermal efficiency
The thermal efficiency of bifold doors is calculated by assessing the overall U-value, which includes the frame, glass, and seals. Specialist software is used to model thermal performance, taking into account the materials and the structural design of the door. Origin’s rigorous testing and development processes ensure that each product meets the highest standards of energy efficiency.
Factors to consider when choosing thermally efficient bifold doors
When selecting thermally efficient bifold doors, consider the following:
Material and build quality: The quality of materials and construction directly influences the door's durability and thermal performance. Aluminium doors with thermal breaks are an excellent choice.
Glazing: Opt for doors with double or triple glazing to enhance thermal resistance. Read our guide to bifold door glazing options here.
Installation: Proper installation is crucial to maximise the thermal efficiency of bifold doors. Ensure that installation is handled by professionals and that the door fits perfectly, avoiding any gaps.
Certifications: Look for products that are certified and exceed local building regulations to ensure top thermal performance.
Read our guide to choosing a high-quality aluminium bifold door here.
Frequently asked questions
How do thermal breaks in aluminium bifold doors work?
Thermal breaks are insulating barriers within the frame that prevent heat transfer. In Origin Bifold Doors, these are made of polyamide, which interrupts the thermal pathway through the aluminium.
Can bifold doors be energy efficient even with large glass areas?
Yes, with advanced glazing options and robust sealing, large bifold doors like those from Origin can maintain excellent energy efficiency.
How do Origin’s doors exceed British Building Regulations?
Origin designs doors with superior materials and technology, such as advanced glazing and thermal breaks, ensuring that our products surpass the required U-Values set by the regulations.
Origin Bifold Doors
By focusing on sophisticated design, advanced materials, and exceeding regulatory standards, Origin provides both aesthetically pleasing and highly energy-efficient door solutions. As energy costs rise and environmental concerns grow, investing in thermally efficient bifold doors from a reputable, luxury manufacturer such as Origin is a wise and forward-thinking decision.
Aluminium bifold doors are extremely secure and are known for their exceptional strength. Origin Bifold Doors are one of the most secure systems in the market and have passed PAS 24 tests. The unique 8-point locking system offers extra security.
Shop our full collection of aluminium bifold doors here
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