Deceuninck uPVC Windows in Surrey, Hampshire & Berkshire

High-Performance Deceuninck uPVC Windows Installed by Experts

Thames Valley Windows proudly installs the full range of Deceuninck uPVC windows and doors across Surrey, Hampshire and Berkshire and across the Southeast. Designed for exceptional strength, lasting durability and outstanding thermal performance, Deceuninck products remain one of the most trusted choices for homeowners upgrading from older timber, aluminium or outdated uPVC windows.

Choose from flush sash, tilt-and-turn, chamfered 2500, or sculptured 2800 profiles, each designed to deliver a stylish, high-quality finish that suits both modern and traditional homes.

Explore a wide range of window design styles :

Flush Sash Windows

Tilt and Turn Windows

Chamfered 2500 Windows

Sculptured 2800 Windows

A Window Range Engineered for Every Home

The Deceuninck collection offers a complete range of styles, including classic casements, contemporary flush sash windows, sculptured or chamfered frames, and the versatile tilt-and-turn window system. Whether your Bracknell, Reading, Maidenhead, Camberley, Sandhurst, Farnborough, or Fleet property is a modern new build, a Victorian terrace or a countryside cottage, homeowners can customise each window in design, colour and hardware to achieve a perfect fit.

Market-Leading Quality Rooted in 80 Years of Innovation

Founded more than eight decades ago, Deceuninck has become synonymous with high-performance materials and cutting-edge manufacturing. Their UK headquarters in Calne produces award-winning PVC-U frames that outperform typical uPVC systems in terms of strength, longevity and thermal efficiency. Every product is engineered with installers and homeowners in mind, easy to fit, simple to maintain and built to withstand the British climate.

Sustainability at the Heart of Their Design

Deceuninck is renowned for its commitment to sustainable manufacturing. With one of Europe’s largest PVC-U recycling plants, capable of processing 45,000 tonnes of material annually, they support an actual circular economy. Choosing Deceuninck windows means investing in products with a significantly reduced environmental footprint and long-term recyclability.

Outstanding Thermal & Acoustic Performance

All Deceuninck window systems achieve exceptional energy ratings, helping homeowners reduce heating costs and create a more comfortable, consistent indoor environment. Multi-chambered profiles, advanced gaskets and precision-fitted glazing make these windows among the most energy-efficient options on the market. For those living in urban areas or near busy roads, enhanced acoustic insulation helps keep noise to a minimum.

Secure, Resilient & Built to Protect

Security is an essential feature of Deceuninck’s design philosophy. Reinforced PVC-U frames work alongside high-security locking mechanisms and PAS 24 compliant systems, ensuring your home benefits from reliable, long-lasting protection. Each window undergoes rigorous testing to guarantee maximum resistance against forced entry and adverse weather conditions.

Flush Sash & Heritage Styling

For homeowners in Bracknell, Wokingham, Ascot, or Crowthorne who prefer traditional detailing without sacrificing modern performance, the Heritage Collection offers some of the most realistic timber-effect styles available. Flush sash windows sit beautifully within the frame, offering clean, smooth lines and authentic charm. With extensive woodgrain foils, dual-colour options and elegant furniture choices, these windows effortlessly enhance character properties.

Endless Colour Possibilities

Deceuninck is the UK’s colour leader, offering more than 30 stocked finishes and additional made-to-order options, from soft Heritage tones to bold contemporary shades. Every foil delivers long-lasting performance, minimal maintenance and UV stability to ensure your windows look beautiful for decades.

Thames Valley Windows Can Now Price Match

Why pay more? At Thames Valley Windows, you get premium uPVC windows at lower prices — backed by over 40 years of expertise. With our Price Match Guarantee, we won’t be beaten on any like-for-like quote. Same trusted quality. Same exceptional service. Just a better price. T&Cs apply