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The superior choice for window innovation

Infinity PVCu windows feature a stylish smooth corner weld. This is achieved by pushing the leftover plastic into the profile to create a perfectly smooth, timber effect corner joint. They are the perfect choice for period property renovations but are equally suited to adding charm and character to contemporary properties.

Infinity PVCu windows can be specified in a range of different styles. Choose from flush sash, standard casement, and fully reversible windows depending on your project specifications.

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uPVC window with smooth corner weld

Infinity Window Aesthetics

Faithful timber replication finish with smooth corner weld and slim sight lines. Available in 42 different colours and woodgrain finishes with either a chamfered or decorative profile.

Our durable uPVC Infinity window system

Infinity Window Performance

Infinity windows have a lifespan of several decades. They are durable and energy efficient with a low maintenance easy clean finish. They are weather resistant and will keep warm air in and cold air and water out.

Highly secure system with secure locking systems as standard

Infinity Window Security

For the greatest in protection, look no further than the high-security Yale Shootbolt locks and SAC handles that come standard with Infinity Windows. They’re guaranteed to resist even the most aggressive forced entry attempts, keeping you and your valuables safe.



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    Durable and attractive window hardware

    Compatible with a selection of durable and smooth functioning hardware.  Choose from a range of handle styles to match your installation specifications. Infinity PVCu windows are fitted with attractive SAC handles.  They are available in several styles and provide unrivalled levels of performance with their smooth but strong opening action.


    Windows glazed for style and performance

    Available with numerous glazing options.  Select obscure glazing to increase privacy or leaded and decorative glazing to add character to a property. For commercial installations choose reinforced glazing.  For residential windows, obscured or decorative glass is popular for bathrooms and rooms which are overlooked or close to a busy street.


    Quality manufactured windows

    Expertly crafted Infinity windows made to your exact requirements

    At Dekko Window Systems, we manufacture all our windows at our Lancashire factory. We can create bespoke windows, designed, and fabricated to your exact specifications. When you want to offer your customers high performance, style, and customisation, choose Dekko Window Systems as your trusted supplier.

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    Bespoke infinity windows built with the installer in mind

    A happy installer is an installer who will recommend our products and services and continue to use them, themselves. At Dekko, all our products are designed with the installer in mind to ensure a smooth installation and a very happy end-user.

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    Infinity window in white uPVC with monkey tail handle for traditional look
    Dekko infinity window frames

    Expertly manufactured infinity windows to suit any home improvement product

    Our factory team of experts are equipped in using the latest techniques to create high-end bespoke infinity windows for our trade customers to ensure a very pleased end-user. Our state-of-the-art factory is filled with all the latest machinery so we can manufacture our huge range of products.

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    Become an approved Dekko installer to access a wealth of benefits

    Why should you become a Dekko approved installer?

    You will gain access to the highest quality windows and doors manufactured and supplied directly to you, access to three trade counters to purchase products and essential hardware at competitive trade prices, and see a noticeable increase in your installation requests, plus:

    Find out more about partnering with Dekko today.

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    Highly energy efficient Infinity windows
    golden oak uPVC Deceuninck window

    Frequently asked questions

    What is the average life of uPVC windows?

    The longevity of uPVC windows can vary depending on their quality and maintenance. Typically, these windows can last for about 20 to 25 years. However, some uPVC windows may not last more than 10 years, while others can last for up to 35 years.

    If your uPVC windows were installed around the turn of the millenium, then they may need replacing or repairing as they would have likely either reached or exceeded their expected lifespan. Regular cleaning and lubrication can help extend the life of your uPVC windows, so it’s important to keep up with proper maintenance.

    Should I replace old uPVC windows?

    To enhance the comfort of your home and reduce energy costs, it’s worth considering replacing old uPVC windows with newer, more energy-efficient models. For a professional assessment of the windows’ condition and guidance on replacement options, it’s recommended to consult with a window installer. This will help you make an informed decision on whether to replace your uPVC windows or not.

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    Find out more about Infinity PVCu windows

    Have a read of some of our latest articles to discover more about Infinity windows from Dekko.

    Dekko’s popular Infinity Collection gets a brand-new premium website

    Comparing our flush sash range: Infinity vs Residence 9

    7 reasons installers love Infinity products from Dekko

    Infinity uPVC windows with georgian bars creating a traditional look

    Start your project

    Schedule your complimentary quote consultation with a nearby specialist consultant who will:

    1. Provide you with an exact, obligation-free quotation.
    2. Present creative suggestions and practical remedies.
    3. Display product samples.
    4. Perform essential measurements as required.

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    By submitting your details you confirm that you agree to the storing and processing of your personal data by Dekko Window Systems as described in the privacy statement.


    Fast delivery and would highly recommend

    "Ordered double glazed window for our shop. Dealt with Nathan on the Trade Counter, who was excellent and went above and beyond the usual customer service. Window was very well made and arrived with no problems. Fast delivery and would highly recommend."

    Tony Spooner

    The windows look fantastic

    "Recently used Dekko Windows to supply the windows and aluminium bi-fold doors for our renovation project. We paid a short visit to their showroom where Rob and Neil were really helpful, showing us around and providing options for us. We were really happy with the whole process and the windows look fantastic. Would definitely recommend this company."

    Richard Kennedy

    Very happy with the level of service and products

    "I've been using Dekko Windows for a number of years now and have been very happy with the level of service and products. Rob and Neil have never failed to get back to me promptly with quotes and lead times etc and Leon the delivery guy is always happy, friendly and helpful whenever unloading frames on site."

    Peter Bain

    Excellent service

    "Excellent service. It's always a joy to deal with Rob, Neil and Leon. They always go out of their way to assist me with my projects and are very professional and friendly. Thanks again to the Swindon Dekko Team!"

    Jordan King