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Trustworthy Double Glazing Suppliers

At Dekko Window Systems, we've built a reputation for excellence in the double glazing industry. For over 15 years, we've been the trusted supplier for trade installers seeking high-performance windows and doors that enhance any property. We manufacture a comprehensive range of uPVC, aluminium, and timber-alternative products, ensuring you have the perfect solution for every project.

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Infinity uPVC Windows and Doors: Unmatched Performance and Value

Our Infinity range represents the pinnacle of uPVC design and engineering. Crafted using the latest profile technology, Infinity products offer exceptional thermal performance, superior weather resistance, and unrivalled security. These uPVC window frames and doors are meticulously fabricated to ensure a flawless finish and effortless operation.

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

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Infinity Flush Sash
Open Raum bifold doors

Räum Aluminium Windows and Doors: Strength, Style, and Sustainability

For projects demanding a touch of contemporary elegance, look no further than the high performance Räum range of aluminium doors and windows. Räum products are renowned for their exceptional strength, sleek sightlines, and expansive glazing options. Highly durable and inherently low maintenance, Räum aluminium windows and doors are ideal for both modern and traditional builds.

Räum trade windows and trade doors are created using slimline aluminium frames which offer thermal efficiency and optimise natural light intake, creating an enhanced feeling of spaciousness. Aimed at the luxury end of the market, Räum trade windows and doors add superior quality to a full range of installation projects such as aluminium sliding patio doors and bifold doors.

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Residence Collection: Timber-Alternative Windows and Doors imbued with Classic Charm

The Residence Collection offers a unique range of timber-alternative windows and doors that perfectly emulate the timeless appeal of traditional wooden styles. Manufactured using high-performance materials, Residence Collection window frames provide exceptional energy efficiency and low maintenance upkeep, while retaining the classic aesthetics homeowners desire.

R7 windows are defined by their flush frames both inside and out, R9 frames faithfully replicate a 19th-century timber aesthetic, and R2 frames provide a flush exterior with a stylish square detail inside. All Residence Collection windows and doors are manufactured with multi-chambered profiles, providing excellent levels of thermal and acoustic efficiency with a smooth, low maintenance finish.

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Traditional flush sash window
CW50 Curtain Walling

Expanding Your Project Portfolio with Dekko Aluminium Products

In addition to our window and door ranges, Dekko also provides a selection of premium aluminium products to complete your project requirements. This includes the innovative Decalu 88 aluminium bi-fold doors, ideal for creating seamless connections between indoor and outdoor living spaces. We also offer the Decalu 88 aluminium entrance doors, providing a stunning and secure welcome to any property. And for larger-scale projects, Dekko supplies the Concept Wall 50 curtain walling system, perfect for creating expansive areas of glazing with exceptional thermal performance.

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Make it Yours: Dedicated Trade Installer Support

At Dekko, we understand that your success is our success. That’s why we offer a comprehensive suite of support services under the “Make it Yours” umbrella. From marketing materials and sales brochures to technical expertise and installation training, we provide everything you need to confidently showcase Dekko products to your customers and ensure a smooth project delivery.

By partnering with Dekko Window Systems, you’re not just choosing exceptional products; you’re choosing a reliable and committed supplier dedicated to your long-term success. Contact us today to discuss your requirements and discover how Dekko can elevate your next project.

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Make it yours brochure


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