More Facts & Stats on Our Bi-Fold Doors

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  • Built into every Alutech System are the highest quality security mechanisms
  • For the highest energy efficiency the system is designed with 70mm thermal aluminium profiles
  • Each door panel measures 3,500mm in height and 1,250mm wide
  • When ordering your Alutech System you have a choice between flush or standard rebate options
  • Every handle will pop out to touch to keep your Design smooth and sleek.
  • Every system comes with multi point locking built in
  • Electric and manual integral designs are available within all Alutech System


Colours & Finishesarray

All bi-fold doors are painted and coated with high quality, long lasting paint that is designed to last the test of time, hence why we are able to offer a 10 year guarantee inclusive of all bifold door orders. All finishes are first class with low maintenance attached, subsequently, your bifold doors will only require a quick wipe down once or twice per annum.



Gives a lovely finish to any house and home, being a neutral shade it combines with almost all colour schemes that you have in situ. Smart and practical you can’t go far wrong with white.


Classic and classy, the dark smart shade also goes with almost all other colours that you have in your home. Adds that really smart solid affect against your other finishes.


So if you’ve considered the white and black but they don’t grab you, then grey’s going to be the shade for you. Stylish and also sits alongside almost any other colour you have.

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All colours come supplied with a 10 year warranty for long term reassurance. Only the highest quality materials are used which are professionally applied by experienced industry experts. Hence the ability to offer a 10 year warranty on all colour options we apply for you.

Glass Options

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As we are the manufacturers of our own range of products, when it comes to selecting glass for your bifold doors, any preference is possible. We can accommodate your requirements across your chosen selection, whether you wish to maintain a more traditional single glaze look and feel or whether you would prefer a more modern, energy efficient and more secure solution such as double, treble or even quadruple glazed bifold doors. Either way, we can help advise and guide you on the best option for your home, however, our standard double glazing solution looks really great – high quality, secure, easy to clean and very energy efficient too!

All our doors and windows have been submitted to the United Kingdom Accreditation Service (UKAS for short!) to gain the all important Industry standard PAS 24 accreditation, this involves a rigorous testing procedure at their independent testing facility. This ensures that the product meets and gains the PAS 24 – Part of The British Standard stable of excellence and minimum security requirements (previously the BS7950) and assesses the security performance of the glazing for windows and external doors against possible forced entry and intrusion by an unwanted ‘visitor’. We are confident in all of our products, special attention is paid to good design, safety and security so you can be sure of purchasing a truly quality product.

We invite you to our lovely showroom in Colchester where you will be advised and guided through the various options by one of our knowledgeable and friendly assistants. We are here to help so don’t hesitate to either call us or drop by – You will be amazed at the variety, the quality and the shear beauty that a Bifold door brings to your home.

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Energy Efficiency

All bifold doors manufactured, built and assembled by Bifolds Bidesign are fully energy efficient meeting the highest attainable energy efficiency ratings for fixed windows. Subsequently, if you want care for your home and eco friendly warmth all year round, why look anywhere else, other than Bifolds Bidesign for high quality bi-folding doors.


Our Alutech Systems are tailored to suit your needs and styles ensuring every detail is just right. Long lasting, durable and superior, the hardware within every mechanism and every surrounding frame will ensure the security of your property and the safety of those behind the doors.

HandlesVerso Handle (Raw / Unfinished)

All handles within the Alutech System will ensure the smooth operation of your doors with precise and subtle handling. They provide you with pop out effect to keep from sticking out and prevent the smooth sleekness of your bifolds doors. High quality is standard.

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Alutech System Hinges are the strongest in the industry. Taking most of the workload they are exceptional in quality to ensure the durability and functionality of the mechanisms. For the smooth opening, folding and closing of every bi fold Alutech System, these hinges offer the best in the business.



For the ultra smooth running of your bifolds doors, bifolds 6 - Alutech Systems the Alutech System has incredible components required for long lasting, smooth running and reliable movement. Opening and closing your bifolds doors is essential and the reason for any purchase, so every mechanism is designed and manufactured to the highest quality.


Whether you live in a small or large property and regardless of where your home is situated within your neighbourhood even with the best neighbours in the world, we all worry over the security of our homes. They are our nests, where we raise our families and need to be as secure as we can possibly make them with particular emphasis when it comes to windows, doors, lanterns and bifold doors.

These are the weak points for any house and can become the entry points of any unwantedbifolds 3 - Alutech Systems ‘visitor’. Our industry has responded with the introduction of the PAS 24 (2012) Security Standard, this is the line in the sand of the very minimum basic security requirements as dictated by the United Kingdom Accreditation Service (UKAS for short!) So the door, window and lantern manufacturer submits their product and is granted this ‘fit for purpose’ standard. These measures have proven to be so effective in stopping intruders that the Police Service has had to plan differently when they are executing a warrant and making an arrest by forcing entry to the house of a suspect. Comforting information indeed and should go a long way to allaying any fears and worries you may have over the security of your home.

This is the very reason why we specialise in bifold security to ensure a force of entry is not possible other than through extreme instances which are almost impossible to prevent. As a company, we pay particular attention to security across all our product range and truly believe that we sell the most secure and highly tested bifold door solution on the market and we welcome you to put this to the test by visiting our showroom in Colchester, Essex.

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Established over 160 years ago, the Winkhaus group is renowned as one of the best security mechanism manufactures worldwide. Experts in security, we work with this globally recognised manufacturer to ensure all tilt and turn window security systems that we install are highly regarded as the best in it’s class, as we only believe in the very best. ‘Because We Can’. If you want to learn more about Winkhaus visit their website, as you will see they are based in Kettering of the UK. Winkhaus is a company we are happy to be associated with in terms of quality and heritage and this is why we use their high quality products for most of our manufacturing processes, which are proven to be consistent here in the UK.



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Almost everyone has heard of Yale and if not, then you will have almost certainly used one of their door or locking systems. Yale is yet another well respected company which we are proud to confirm we work with by using their products throughout most of our manufacturing processes as well. Subsequently, if you love to buy quality products, then look no further than Bi-Folds Bi-Design based in Colchester, Essex, UK. “Because We Can”.



The Alutech System is tailored to fit your threshold. When considering your new bi-folding doors consider the wall or door already in place and the size and area you’d like to see through. Decide where you’d like to have your Alutech System built and we’ll do the rest, ensuring the external wall and the internal skirting is perfect and aligned.





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We use only the best! All our doors are Tested to the PAS 24 UK Standard and have various locking systems to satisfy your concerns about security. The components used are rigorously quality controlled and where necessary tested to the highest standards.
Doors can be provided in double or single configurations so are applicable for almost all design layouts. The materials used are light yet strong and have longevity so you can be sure of daily use across a long period of time. Suitable for application in New builds and / or refurbished older properties, you can be sure of the look, quality and lasting service where ever you fit them!







Let your imagination run riot! The number of configurations we can offer you is not limitless but certainly extensive; From a 2 pane span to a wonderful and impressive 7 pane spread as a standard, provided your property can accommodate such a solution. Please request details of the 8 pane and more option should that be on your ultimate wish list. It is a solution we love to fit because it looks so amazing and is really impressive. Creates that wonderful idea and feeling of bringing the outside in and the inside out.
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Alutech are one of the leading manufacturers of Aluminium Systems in the world

Their decades of experience producing the highest quality aluminium products for doors and windows make their knowledge coveted and their accolades prestigious. Scaling down their work for multinational corporations and international businesses, they’ve designed the BF 70: a masterclass in bifolding door technology.

You’ll see more of the outdoors than through any other profile with straight lines on 120mm thick. Combined that with being PAS24-approved & you’ve got the most secure door with the widest vistas possible. It might not come as a surprise that these high quality specifications also have the maximum possible insulation value and weatherproofing available on the market – Alutech Systems meet or exceed every industry standard to keep you warm, dry and breeze-free.

With such slender frames other providers might make you compromise on colour, but we can give you your Alutech bifolding door system in any one or even two RAL colours of your choosing. We’re in the business of letting you choose to make your home yours, right down to the shade of your frames.

Speaking of shade, Alutech systems are also capable of supporting an industry-leading sash size of 1200mm in width, so you can decide when the sunshine fills your living space. It’s all about letting you choose what your home looks like without compromising on any aspect of design or quality.

No matter whether you’re trying to open up your kitchen into your back garden or turn your back wall into a widescreen view of your porch, you can have it your way every time with Bi Folds Bi Design & Alutech Systems. Enjoy up to 14 panels of door to occupy even the widest spaces and treat yourself, and your family, to the home improvement you’ve always wanted.

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Registered Office:

71 - 75, Shelton Street, London, WC2 9JQ

Company Number: 10733676

Tel: 01206 212040