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Slimline Aluminium Lumi Windows in Belfast and across Northern Ireland

If you live in a modern style home and want to benefit from the latest developments in window system design, Turkington Windows are proud to supply and install Lumi windows. With their completely flat, uninterrupted profile, these radically styled windows bring a wall of light successfully into your home.

This intelligent piece of engineering is the first of its kind on the market, bringing all the design benefits of frameless double glazing with all the strength, security and internal styling of more traditional windows and doors.

Minimalist design that still brightens your home

When opting for a Lumi window from Turkington Windows you get all of the specified benefits without a product that ever feels invasive. The frame sports a sleek design with concealed hinges that allows for smooth action and a high weight load. The Lumi window system allows for oversized openings and minimalist design, offering all homeowners endless light.

Another hidden feature comes in the form of a tucked away double rebate and double gasket seal that makes for some exceptional U-values, ensuring that your home is the pinnacle of energy efficiency every time.

Lumi window interior view close up
  • Features & Benefits
  • Videos
  • Energy Efficiency
  • Colours
  • Security
  • Features & Benefits

    1. Modern and Sleek Design

    • Slimline Aluminium Lumi Windows, perfect for modern-style homes.
    • Enjoy a radically styled window system with a completely flat, uninterrupted profile that brings a wall of light into your living space.

    2. Unmatched Engineering

    • The first of its kind on the market, offering frameless double glazing benefits with the strength, security, and internal styling of traditional windows and doors.
    • Experience the best of both worlds with innovative engineering.

    3. Minimalist Elegance

    • A minimalist design that brightens your home without feeling invasive.
    • The sleek frame features concealed hinges for smooth action and high weight load, creating a contemporary and unobtrusive look.

    4. Abundant Natural Light

    • Oversized openings and minimalist design for endless light.
    • Enjoy a well-lit home that brings the outdoors inside, making your living space feel open and inviting.

    5. Outstanding Energy Efficiency

    • Double rebate and double gasket seal for exceptional U-values.
    • Ensure your home is at the pinnacle of energy efficiency, providing both comfort and cost savings.

    6. Strength and Security

    • High-quality construction with a focus on strength and security.
    • Rest assured that your Lumi windows offer both aesthetic appeal and robust protection for your home.


    Lumi Energy Efficiency

    Lumi Evolution

    Lumi French Doors

    Lumi Installation

    Lumi Installation

    Lumi Product Video

    Lumi Windows

    Energy Efficiency

    As the most energy efficient window option on the market, the Lumi window range is specifically designed to conserve energy alongside excellent weather resistant qualities. Totally draught free, it’s 50mm triple glazed toughened glass fitted as standard provides effective noise reduction qualities that are second to none. Complete with ground-breaking U-values from as low as 0.7, the Lumi window system enables considerable energy savings for eco-conscious homeowners right across Ireland.

    Interior view of a Lumi windowLumi casement window close upLumi2 Cross Section


    Fully customisable, our Lumi windows are available in a wide selection of finish options for the exterior and interior frames. Whether you decide on a single colour or dual colour to enhance and compliment your home is completely up to you!


    Secure windows and doors

    Your security is at the heart of all of our home improvement products, making no exception with our highly secure Lumi window range. Considering around 30% of intruders enter through a window, we fit all of our Lumi window systems with the Winkhaus high security lock as standard. Furthermore, Lumi windows have completely concealed hinges for ultimate peace of mind that your home is safe and secure with a Lumi window installation.

    Security FAQs

    Known for professional, efficient & dedicated service

    Free showroom & home visits include a same day quote

    Average of 12-14 weeks from signing to installation

    Up to ten year warranty with dedicated post-installation support

    Dedicated teams to resolve installation & maintenance issues

    What do our customers say?

    We’re very proud of our reputation for providing an excellent all round service – from sales, through installation and after-sales we try to ensure every customer’s experience is excellent. Last year, we asked our customers if they were satisfied by the level of service they received from Turkington Windows, with 98.3% of our customers saying they were more than satisfied. We love hearing feedback on our service; below are some comments from happy customers in your area who are glad to recommend our products and services to those looking to have new windows, doors or a conservatory installed.

    Great Service

    The fitters were also great. They were very tidy workers and left the house exactly as they found it. There wasn't a mark on the wallpaper. We wouldn't hesitate to...

    Amanda Barr


    A fantastic experience

    Two groups of workers helped to deliver a first class service ie replacement of windows/plastic roof with state of the art new double glazed windows throughout. Money well spent.

    Bernard Joseph


    I had windows and doors fitted last year

    I was very impressed with them from beginning to end that I decided to get guttering this year and I am so happy with it and how it compliments my...

    Auntie B


    Conservatory Installation

    Throughout the process all members of staff with whom we came into contact were friendly and helpful, advising us of when they would be with us and turning up on...

    Graham Middleton


    Recently new door fitted

    Great service and especially Brian Luke who looked after us extremely well. Service excellence from start to finish. Fitters did an amazing job and cleaned up after themselves.

    Chris Shakesby


    100% recommend Turkington

    The team who came to fit my windows worked very quickly and were neat and tidy. I've had so many compliments on the big picture window in our living room....

    Liana Ross


    See more of our reviews

    Get in touch with us today!

    Fill out your details on our contact form to request a free quote, and our team will we will be in contact shortly to discuss your requirements.

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    Choosing the right window for your house

    Double Glazing Across Ireland

    With showrooms in Lisburn & Portadown we are ideally placed to supply and install windows, doors and conservatories all across Belfast and Northern Ireland, as well as the greater Dublin area and counties Monaghan, Meath and Louth.

    Holding ourselves to the most stringent standards

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    TSI approved code logo
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    NI Environmental Benchmarking Survey 2022