Golden Ratio Sash Windows and Doors
Bi-Folding Door Installers in London
Bespoke crafted bi-folding door design & installations
Bespoke Timber Bi-Folding Doors London
A lot of kitchen extensions in North London—especially around Islington and Hackney—end up feeling disconnected from the garden. We are Bi-folding door installers in London homeowners can rely on for thermal efficiency is the ideal solution to link your indoor and outdoor spaces. We custom-build and fit these folding systems to comply with the latest building regulations while maintaining the character of your period property.
Why Choose Timber Bi-Folding Doors?
Timber vs. Aluminium Bi-Folds
When you are looking at Bi-folding door installers in London, you'll see a lot of aluminium options. Metal is great for narrow sightlines, but it gets incredibly cold in the winter. Engineered timber—we mostly use Accoya®—stops that cold bridge effect completely. Wood doesn't transfer heat the way metal does, which means your kitchen stays warm when the temperature drops.
Plus, on a Victorian or Georgian house, metal frames can look a bit harsh. Timber has a warmth to it that matches the brickwork and garden greenery much better. For historic properties, choosing high-performance timber bi-folding doors London joiners design from Accoya® ensures you get the best of both worlds: modern insulation and period-correct details.
We prefer working with wood because of how it performs over time. Standard plastic or uPVC doors tend to degrade and look yellowed after a few years of UV exposure, whereas a well-maintained timber door can be repainted and refreshed indefinitely. It is also highly versatile—if you want to change your home's color scheme in ten years, you can simply repaint the timber, which you can't do with uPVC. We source all our timber from sustainably managed forests, making it a much better long-term choice for the environment.
Bi-folding door installers in London
We build our bi-folding doors using engineered timber, typically Accoya®
Unlike standard wood that can swell or warp when it gets wet, engineered timber doesn't budge. This means your doors will glide smoothly year-round, whether it is a humid summer day or a wet London winter.
Security is another area where we don't cut corners. Every door set we install is fitted with a multi-point locking system. These lock at several spots along the frame rather than just in the middle, providing strong resistance against forced entry and giving you peace of mind when you are away from home.
To keep your home warm and quiet, we combine these thick timber frames with high-performance double-glazed units. Filled with argon gas, this glazing acts as a barrier to heat loss, which is essential if you have a large glass wall in a kitchen extension. It also helps dampen street noise, making your garden room a much more peaceful space.
Lastly, every home is laid out differently, so we configure the panels to suit your space. You can choose whether they slide to the left or right, and we can include a "traffic door" (a single active leaf that opens like a normal door) so you don't have to fold back the entire set just to pop out and water the garden or let the dog out.
There is noone better Bi-folding door installers in London than Golden Ratio.
How We Handle the Installation Process
If folding doors aren't fitted perfectly square, they will stick and drag. That is why our work starts long before we show up with the doors. We do a detailed site survey to check the opening, measuring everything to the millimeter. If the brickwork is slightly out of alignment, we plan for it then, not when we are trying to hang the doors.
Once the door set is made, we bring it to site and get to work on the opening. We clear out the old frame, clean up the masonry, and double-check the structural lintel. We secure the main outer frame, check the levels again, and then mount the door leaves onto their tracks. We adjust the rollers until the whole set slides with just a light push.
After that, we check the weather seals and multi-point locks to make sure everything seals tightly, then tidy up and apply the final sealant lines. If you are looking to install premium timber bi-folding doors London families trust for durability, get in touch to discuss configurations and arrange a site visit.
Get in touch to get your custom Bi-folding door installers in London today! Free Quotes Available.
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Here at Golden Ratio Windows we have built up an excellent reputation in our local area by offering the most comprehensive and expert service in London. From the planning stage to the finished article; we are with you every step of the way, making sure that whatever the task, you are completely satisfied with the end result. You can also rest assured that you will be receiving a professional, yet personal service for each job that we attend.
With so many years working in the trade, we are happy to answer any queries and provide quotes for any work that you are looking to have done. If you are in need of any work in London or the surrounding areas, then give us a call on 02034881695, or send us a message through our contact page.
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