Aluminium frameless windows from Lumi are the most elegant way to transform how your home looks, how it feels and how you enjoy living in it
Use the slider below to see the Lumi aluminium window glazing system transformation


Replacement Window Projects
If your windows are old or you’re unsure when they were fitted, some common signs to look out for that tell you when it’s time to replace your window are draughts, heat loss, moisture leaks and damp, poor appearance and functionality problems. Replacing your windows with Lumi double or triple-glazed windows is easy and hassle free.
Renovation and Extension Projects
Whether you’re taking on a full construction project or renovating your existing property, new windows are a key feature and with a Lumi window system, you will be able to enhance the aesthetics of your property, as well as making your home more secure and energy efficient. To complete the look, the Lumi range also includes lift & slide doors and roof-light windows.
New Build Projects
Building a brand-new home can be a daunting task and knowing what windows will be best for your new build project can become overwhelming. Here at Lumi, our team of experts can work alongside you to advise on all your glazing needs to ensure you get the best fit for your home.

Lift & Slide Doors
A new method of operation driven by the need for larger panels and increased thermal performance, Lumi’s range of lift and slide doors effortlessly bring the outside in when the weather is good and keep it outside when it isn’t.

Aluminium Windows
Lumi’s iconic frameless look and super-slim sightlines are now available in easier-to-handle aluminium units that have been designed with sustainability in mind to improve heat efficiency and come with high-security locking systems and anti-leverage bolts as standard.

Silka Door
Our designers have created the perfect complement to the Lumi look, the Silka door range. Sleek and effortless luxurious, Silka doors make a stylish statement, with a unique, smooth texture that sets the range apart from any other.
Free Advice Today! Find out more about how you can replace the windows in your home and start your Lumi transformation

Explore Lumi Design Features
Lumi’s beauty is more than surface deep. Explore the
smart technology that makes it possible.

Lumi Protects
Lumi looks after your family’s safety with super-secure features and protects the environment by being amazingly energy efficient.
Completely flat, yet totally stand out
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