Bi fold doors have become a popular choice for homeowners and businesses alike, offering an elegant and practical solution for seamlessly connecting indoor and outdoor spaces. But just how wide are bifold doors? In this comprehensive guide, we’ll explore the sizes, custom options, and material considerations to help you find the perfect bifold door solution for your project.
How Many Panels Can I Have in My Bifold Door?
When it comes to bifold doors from QUAD, you can have a maximum of 14 panels in total, with the configuration allowing up to 7 panels opening in each direction. This allows you to create large, expansive openings that seamlessly connect indoor and outdoor spaces. The ability to customise the number of panels makes bifold doors a popular choice for modern architectural designs, allowing homeowners to tailor their doors to the exact dimensions of their space.
Bifold Door Sizes

The material used to construct a bifold door system can have a significant impact on the maximum size and panel configuration that is possible. Different materials allow for various bifold door configurations, with aluminium being particularly flexible for diverse designs.
uPVC Bifold Doors
uPVC, or unplasticised polyvinyl chloride, is a cost-effective and readily available material for bifold doors. However, most uPVC bifold doors max out at around 2 meters wide.
Aluminium Bifold Doors
Aluminium, on the other hand, is renowned for its exceptional strength-to-weight ratio, making it an ideal choice for larger bifold door systems. The maximum panel width of aluminium bifold doors allows for increased light and views, enhancing the overall aesthetic and functionality of the space. Aluminium frames can support taller panels and accommodate a greater number of panes. This material’s inherent durability and slim sightlines make it a popular selection for many homeowners and installers alike. At QUAD, our aluminium bifolds are available up to 1200mm wide and 3000mm tall.
Measuring for the Perfect Fit
Accurately measuring the door opening, or aperture, is crucial when selecting the right bifold door system. Ensuring proper fitting tolerance for bi folding doors is essential, especially for custom options designed for non-standard openings. Inaccurate measurements can lead to ill-fitting doors, compromising functionality, energy efficiency, and even security.
Step-by-Step Measurement Guide
To ensure a perfect fit, follow these steps:
- Measure the width of the aperture at the top, middle, and bottom, using the smallest of the three measurements as the door width.
- Measure the height of the aperture on the left, right, and centre, again using the smallest value as the door height.
- Measure the depth of the aperture to determine the available space for the bifolding door panels.
It’s also important to account for a fitting tolerance of around 10mm, as this small gap allows for proper installation.
Benefits of Bifold Doors
Bifold doors offer numerous benefits that make them a popular choice for homeowners and businesses alike.
Bifold doors can greatly enhance the aesthetic appeal of a room or building, providing a sleek and modern look that is sure to impress. They also offer excellent functionality, allowing for easy access to outdoor spaces and creating a seamless transition between indoors and outdoors. With bifold doors, you can enjoy stunning views, increased natural light, and a sense of openness and freedom. These doors are perfect for creating a stylish and inviting atmosphere, whether you’re entertaining guests or simply enjoying a quiet evening at home.
Bifold Door Materials and Glazing
Bifold doors can be made from a variety of materials, each with its own unique benefits and characteristics.
Aluminium
Aluminium is a popular choice for bifold doors due to its strength, durability, and energy efficiency. It can support larger door panels and offers slim sightlines for maximum glass area and unobstructed views.
uPVC
uPVC is an alternative choice for bifold doors, offering energy efficiency and budgetary benefits. uPVC bifold doors are widely regarded as not a recommended solution however, due to the difficulties in using the doors as they expand and contract with temperature changes.
Glass
Glass is a key component of bifold doors, offering excellent energy efficiency and security benefits. High-quality glazing options, such as double or triple glazing, can enhance thermal performance and reduce energy costs.
By understanding the different materials and their benefits, you can choose the best bifold door solution for your needs, ensuring a perfect blend of style, functionality, and performance.
Maximising Bifold Door Widths
As bifold door technology continues to advance, the maximum widths achievable have grown increasingly impressive. External bifold doors offer numerous benefits, including energy efficiency through advanced glazing, enhanced durability to withstand weather elements, and aesthetic enhancement to complement any home design.
At QUAD, our range of bifold doors offer the perfect blend of cutting-edge technology and stylish design, suited to both traditional and contemporary homes. These doors offer space-saving solutions by folding neatly to one side of the door frame. Designed with super-slim profiles, our bifold system boasts sightlines of just 107mm from frame to sash, ensuring that the glass area is maximised for stunning, unobstructed views.
For installers, QUAD offers extensive support, including downloadable guides and expert advice, making the process efficient and hassle-free. For more information, or to become a partner with us today, give us a call on 01782 340111.