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Aluminium Bi Fold Doors


Klosen / Doors / Aluminium Bifold

Aluminium Bi-fold Doors
Aluminium Bi-fold Doors
decking with garden furniture and open house windows and doors


Install stunning aluminium bi-fold doors in your home to create a spacious and elegant atmosphere, transforming a regular entrance way into one which evokes allurement and envy.

What are Aluminium Bifold Doors?

Our folding glass doors with aluminium frames have been designed to marry to their surroundings seamlessly, affording you an uninterrupted view of the outside world whether the doors are open or closed.

Much like our slimline sliding doors, our bi-fold doors’ aluminium frames are thin and have little impact on your vista.

Made with precision and designed for maximum visual impact, aluminium bi-fold doors allow you to extend your living space to the garden. Their 95% opening aspect, timeless appearance and exemplary thermal insulation properties give them year-round appeal.


At Klosen, we provide an all-encompassing installation service. Our passionate and experienced craftsmen will handle your project with the utmost care and attention to detail, conducting an initial design and planning process before installing your new doors.

We ensure that you’re totally satisfied with your installation as it develops, answering your questions along the way and keeping you updated on its progress.

Recognising that a premium-priced aluminium bi-fold door brings with it high expectations of quality, we only supply the finest products from DeWall and Senior Architectural Systems. Contact us today for more information or request a free quote online today.

Request A Quotation

Our Customer Reviews

Great Price & Quick Delivery

This company have been amazing and came to our rescue when another company let us down repeatedly over a period of 4 months during our building work. We got a great price, a quick delivery time and the same product but this time with lovely fitters who knew exactly what they were doing. Now we will will have a warm house for christmas HOORAY !! We went for 3 large sliding doors and the quality of the product is excellent . Many thanks to Audrey Cieran and the team I would recommend highly
- Esther Young


Delighted with the product and the service provided by Klosen. The installation team were excellent and very helpful.
- Sara Hyem

Very Happy

We’ve been very happy with the work Klosen recently completed for us. They installed a variety of windows and sliding doors for us on our new build project. All of the information we requested early on was provided promptly and they were great with our architect. Very happy with the end result and the colour they helped us chose.
- Sarah Munton


Senior Architectural Systems

Doncaster-based Senior Architectural Systems has a highly-respected line of aluminium bi-fold doors. Each model has outstanding thermal performance, helping to keep your home warm in the winter and cool in the summer, and is available in an array of finishes including standard RAL 9910 and RAL 7016 colours.


Designed to exceed current building standards and meet future ones, the PURe Fold door system is available in leaf sizes of up to 1,000mm x 2,616 mm and leaf weights of up to 100 kg. Equally at home in residential and commercial properties, its intermediate weather seals provide impressive levels of protection from the elements – and additional thermal enhancement is available to deliver further energy savings. This door’s advanced roller design means it’ll be good for years of operation – Senior expects the product to last for over forty years when maintained correctly.


Another over-achiever, the Ali FOLD range exceeds current building regulations and features a polyamide thermal break for amazing thermal efficiency. Like the PURe range, this door line is available in leaf sizes of up to 1,000 x 2,616 mm – and its sturdy design can accommodate leaf weights of up to 100 kg. Sharing the other model’s four-decade-plus life expectancy, the Ali FOLD can accept double or triple glazing to keep your home warm and peaceful.

Senior Architectural System Brochure
SAS Slimline Bifold


Elegant, beautiful and engineered to last: Cortizo bifold doors are some of the best out there. The Spanish manufacturer has been working with aluminium since 1972, and has poured all of that experience and knowledge into its current bifold door lineup.

Offering exemplary thermal performance, smooth operation and contemporary aesthetics, Cortizo bifold doors are the perfect complement to any residential or commercial property.

Cortizo Brochure

10 Year Guarantee

We offer a 10 year guarantee on all aluminium profiles and 25 years for the powder coating element

Thermal Efficiency

Stay warm in the winter and cool in the summer whilst cutting down on energy bills

Complete Flexibility

Our team are flexible throughout the entire process, including the design and installation of windows

25+ Years Experience

Klosen have over 25 years experience working with designers, architects and homeowners

Where We Work

We work across a 60-mile radius from our premises in Market Deeping, Lincolnshire. Popular areas include Peterborough, Cambridge, Lincoln and London. We install in urban and rural locations. From Stamford to Covent Garden, we’re proud to supply luxury doors and windows that enhance properties. Not sure if we operate in your area? Contact our team today.

Who Are Klosen?

We provide bespoke aluminium windows and doors installations for commercial and domestic properties. With over 25 years in the industry, we deliver a seamless experience from start to finish. Our team will get to know your design tastes and specifications, and if you’re not sure what’s best we can offer professional advice. Partnering with the finest global brands enables us to both match your requirements and exceed your expectations on the finished result.

To find out more about the designs we supply, you can download our brochure.


Can you install aluminium bi-fold doors in a business property as well as a residential one?

Absolutely – please speak to us today to discuss your needs and to obtain a free, no obligation quote.

How much do aluminium bi-fold doors cost to install?

The cost of installing these doors varies significantly depending on the configuration you choose and the size of the project. Contact us with your preferences and requirements and we will get back to you with a quote.

How do I decide which aluminium bi-fold door to choose?

Each range has its own set of advantages and plus-points, making some more suitable for certain installations than others. We can advise on which one would be most suitable for you and recommend a product line which ticks all your boxes.

Get in touch with us today to receive your free quotation!