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Replace your old windows! Start your Lumi transformation today - Enquire Now
Transform your home

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.

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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.

For Free Practical Renovation Advice – Enquire Now

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.

For Free Practical New-Build Project Advice – Enquire Now

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.

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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.

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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.

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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.

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Lumi Protects

Lumi looks after your family’s safety with super-secure features and protects the environment by being amazingly energy efficient.

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Start your Lumi transformation

Phone or ping our expert team to discuss everything Lumi

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We got Lumi windows for our new build house. From the very beginning the service has been excellent from Jamie in sales to Gary and the lads who installed. Exceptional. The windows themselves are in a league of their own. Nothing else like them on the market and they really make the house unique. Could not be happier with the service and the product.
Stephen Whyte, Dublin
Lumi window and door systems are excellent products that stand out from their competitors and their seamless lines and industry-leading thermal qualities are second to none. We are exceptionally pleased with the look of Lumi windows and doors. We love the sleek, seamless finish which we feel enhances the contemporary design of our new home. The sales and manufacturing team were professional throughout and we were impressed by their willingness to accommodate the very particular demands of our product.
Stephen & Ruth Johnston, County Antrim
We are extremely pleased with our Lumi windows and slider, and all who see them comment very favourably on them. They have added an extra wow factor to the build that we hadn’t originally anticipated. Our Lumi windows are the key element that truly transformed our house rather than the build being just another extension.
Michael Lelieveld, Berkshire, England
I selected Lumi for the exposed coastal location of my project. The windows are very high quality and cost effective. Easier to install than UPVC or Aluminium. My installation company Guy McCullough of Ulverston said they were the easiest windows he had ever installed. My only criticism of Lumi is one of poor communication during the delivery process, but this is just a hang up of a busy fast growing company. Any problems are addressed and if you asked me would I use them again it would be a resounding yes.
Ian Postlethwaite, Lancashire

Completely flat, yet totally stand out

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