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High-performance Deceuninck PVCu Windows

Deceuninck PVCu windows comply with all current Building Regulations requirements. They provide excellent thermal insulation and soundproofing and are compatible with all standard security hardware. Deceuninck PVCu windows are available in several different styles.

The Heritage Collection is perfect for traditional property installations. This can be specified as a flush sash window or sculptured sash window. For the ultimate in innovation Deceuninck windows are available as fully reversible windows. These are perfect for high rise installation where cleaning and maintenance access can be difficult.


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Aesthetically pleasing window in upvc

Deceuninck Window Aesthetics

Available with a wide range of durable coloured foils and stylish coated finishes.  Choose either a chamfered or decorative profile to match your installation requirements.

Decueninck window system with rain drops

Deceuninck Window Performance

Their slimline profiles are low maintenance and thermally efficient.  Available with double or triple glazing, U-values as low as 1.0W/m²k can be achieved.

Deceuninck window security lock

Deceuninck Window Security

Internal beading is used to prevent forced entry.  With multi-point shoot bolt locking as standard, they can meet Secured by Design standards for their superior security protection.

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  • Colour

    A range of classic and contemporary colours for Deceuninck windows

    Deceuninck PVCu windows are available in a wide range of foils and colour coated finishes. Select Golden Oak or Rosewood for a realistic natural woodgrain look. For contemporary properties go for Chalk White or Eclectic Grey.


    The finishing touch to your Deceuninck windows

    Deceuninck windows are compatible with all standard security hardware. This helps to provide a versatile solution to any application.


    Glazing for any application

    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.


    Expertly crafted Deceuninck windows made to your exact requirements

    At Dekko Window Systems, we manufacture all our trade 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 deceuninck supplier.

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    uPVC window in golden oak finish with one window open
    Deceuninck uPVC flush sash bow window

    Deceuninck flush sash windows

    Deceuninck flush sash windows are the perfect choice for heritage property installations. Once installed the window frame sits flush with the exterior property wall to create a smooth uniform aesthetic. This perfectly recreates the appearance of original timber windows, and the frames can be finished with a realistic timer-effect coating to further accentuate the period effect. They are also gaining popularity in more contemporary installations thanks to their sleek finish and unique style.

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    Deceuninck 2500 Heritage Chamfered windows

    Deceuninck 2500 Heritage Chamfered Windows feature outward opening sashes which sit proud of the frame. They have a smooth sloping profile with no embellishment and are a popular choice with both modern and traditional properties. Their subtle style provides an understated appearance which can perfectly complement almost any property type. They are 100% recyclable and are available in 20 different colourways.

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    Deceuninck 2500 chamfered sash window
    close up of Deceuninck 2800

    Deceuninck 2800 Heritage Sculptured Windows

    Deceuninck 2800 Heritage Sculptured Windows are similar to the Chamfered model, sitting proud of the frame and opening outwards. Heritage Sculptured Windows, however, feature more profile detail than their Chamfered counterparts. They feature more architectural lines on the profile face to give a more machined appearance. They are popular with properties with clean architectural designs as their straight lines tastefully complement a more understated aesthetic.

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    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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    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