Deceuninck Windows - Installed by Bowalker

Deceuninck windows give Sussex and Surrey homes a choice of low-maintenance uPVC frames and slim aluminium frames, with strong colour choice, traditional profile options and modern glazing performance. Bowalker installs and replaces Deceuninck windows for homeowners who want dependable replacement windows without a sales-led process.

There are no salespeople, no subcontractors and no pressure, just honest advice, a detailed quote and a finished job backed by Bowalker’s 10-year insurance-backed installation guarantee, with Deceuninck product warranty details confirmed before work begins.

Call Bowalker on 01444 810 111 to book a free home consultation and see what Deceuninck windows would do for your home.

What Are Deceuninck Windows?

Deceuninck is a Belgium-based manufacturer of PVC-U and aluminium window systems, with a UK head office and production in Calne. The brand supplies high-performance windows for residential, commercial and housebuilding projects.

The Deceuninck window range gives Bowalker five main uPVC routes for replacement projects. 2500 Traditional Chamfered gives a clean chamfered sash, Traditional 2500 Flush and Flush Sash give a sash that closes level with the frame for a timber-style flush appearance, 2800 Heritage Sculptured gives a softer sculptured sash, and the Fully Reversible Window gives a sash that rotates for safe cleaning from inside the home. The Decalu aluminium range adds slim, flat-fronted aluminium frames, flush casements and industrial steel-style options where a project needs aluminium strength.

Bowalker installs and replaces Deceuninck windows across Sussex and Surrey, matching the profile to the property rather than using one window style everywhere. A modern townhouse may suit the 2500 chamfered, a more traditional home may suit the 2800 sculptured, a cottage or period-style replacement may suit a flush window, and a contemporary or steel-look project may suit the Decalu aluminium range.

Profile choice without changing supplier

2500 Heritage Chamfered, 2800 Heritage Sculptured and Heritage Flush let Bowalker specify a cleaner, sculptured or flush appearance from one Deceuninck range.

uPVC or aluminium from one brand

The Decalu aluminium range sits alongside the uPVC systems, so Bowalker may specify slim aluminium frames without changing manufacturer.

Colour Strength

Deceuninck’s Heritage Colour Collection offers 30 colourways for uPVC windows, with matching trims and accessories for a finished look.

Security Tested Options

Deceuninck lists PAS 24 certification across key window products, including the 2500 and 2800 ranges, where the correct specification is supplied.

Low-maintenance frames

PVC-U and powder-coated aluminium frames reduce the sanding, staining and repainting that older timber windows often need.

No subcontractors, ever

Bowalker’s own advisers, surveyors and installers quote, survey and fit the work, so the people who specify your windows stay accountable for the finish.

Why Bowalker Installs Deceuninck Windows?

Bowalker chooses window systems that work across real Sussex and Surrey homes, from everyday uPVC replacements to colour-led period-style projects. Deceuninck earns its place for a few clear reasons:

Bowalker customers continue to rate the company highly on review platforms, and the same in-house approach is used on every Deceuninck installation.

Deceuninck Window Styles Available from Bowalker

Deceuninck window style selection starts with the frame material, then the profile shape. Bowalker uses the material and profile choice to match the home, the existing openings and the level of traditional detail required.

2500 Traditional Chamfered

A chamfered uPVC casement profile with cleaner lines for neat residential replacement projects.

Traditional 2500 Flush

A flush window on the 2500 platform where the sash closes level with the frame.

Flush Sash

A timber-style flush sash window for cottages, period homes and conservation-sensitive replacements.

2800 Heritage Sculptured

A sculptured uPVC window system with a softer frame and sash shape for homes that need more traditional detail.

Fully Reversible Windows (FRW)

A window with a sash that rotates fully, so the outside glass may be cleaned safely from inside the home.

Decalu88 Standard

A flat-fronted aluminium window with a completely flat exterior, a flexible option suited to a wide range of applications.

Decalu88 Flush Casement

An aluminium flush casement where the sash sits level with the frame.

Decalu88 Hidden

A modernist aluminium window where the opening sash is completely hidden behind the frame to maximise light.

Decalu88 New Steel

A contemporary, high-end aluminium window with a minimalist architectural aesthetic for modern statement installations.

Decalu94 Retro

A more traditional aluminium window with classic detailing for period installations.

Decalu101 Scand

A pivoting aluminium window that rotates 160° for easy cleaning, suited to openings where access is difficult.

Decalu101 Steel

An industrial-style aluminium window for contemporary, warehouse- and loft-inspired statement builds.

Colour and Finish Options Available

Deceuninck colour options are one of the strongest reasons to choose the range. The Heritage Colour Collection gives a broad palette for uPVC windows, while Decalu aluminium windows use durable powder-coated finishes.

The finishes Bowalker supplies include:

Heritage Colour Collection

Deceuninck lists 30 colourways for its Heritage windows, with colour-matched ancillaries, trims and accessories.

Woodgrain foils

Timber-effect finishes give PVC-U frames a more traditional appearance for cottages, older homes and flush replacement projects.

Contemporary shades

Greys, heritage tones and darker finishes help modernise a property without moving away from low-maintenance frames.

Powder-coated aluminium finishes

Decalu aluminium frames use powder-coated colour finishes, with the available colour range confirmed at quote stage.

Dual-colour planning

Where the chosen specification allows, the external finish and internal finish may differ so the window works with the elevation and the room.

Hardware and accessories

Handles, trim details and finishing pieces help the frame, sash and surrounding details feel connected.

Deceuninck finish pricing depends on the chosen colour, foil and accessory specification. Bowalker confirms the price group and lead time in the quote before the order is placed.

Performance and Features of Deceuninck Windows

eceuninck performance is centred on frame design, glazing choice, PAS 24 security routes and weather protection. The uPVC systems build performance around multi-chamber PVC-U profiles, while the Decalu aluminium range builds it around slim, strong aluminium frames. This makes the range suitable for homeowners replacing older uPVC, timber or aluminium windows that no longer hold heat, keep noise out or lock properly.

Bowalker specifies these Deceuninck features around the property:

Thermal improvement: Efficient PVC-U frames and modern glazing help reduce heat loss, with an A++ energy rating available on suitable flush, sculptured and chamfered specifications.
Slim aluminium strength: Decalu aluminium frames give slimmer sightlines and larger glass areas for modern, minimalist and industrial-style projects.
Double or triple glazing: Deceuninck lists double and triple glazing availability on key products, so the glazing may be matched to the room.
Sound insulation: The slim 2500 profile improves sound insulation, and acoustic glazing may be specified for homes facing heavy street noise.

PAS 24 security route: The 2500 and 2800 windows are PAS 24 certified where the correct product and hardware specification is supplied.
Flush timber-style detail: The flush windows give the visual line of a timber flush casement while using a low-maintenance frame.
Weather sealing: Modern seals, welded frames and correct installation help keep draughts and rain out.
Privacy glass: Obscure, decorative and privacy glass may be specified for bathrooms, side windows and overlooked rooms.

Replacing Your Windows with Deceuninck

Deceuninck window replacement works well when a home needs modern window performance but still needs the right look from the street. Older plain white uPVC may feel dated, while Deceuninck lets Bowalker choose a chamfered, sculptured or flush uPVC profile, or a slim Decalu aluminium frame, around the property.

Bowalker replaces tired timber, uPVC or aluminium windows with Deceuninck across Sussex and Surrey. We match the new frames to the age and style of the property, whether that means the 2500 chamfered, the 2800 sculptured, a flush window or a Decalu aluminium frame. Old windows are removed when the installation is complete.

The signs that Allan Brothers replacement windows may be worth considering include:

Draughts around older frames or failing seals.

Misted glass from condensation trapped between panes, often showing that the sealed unit has failed.

Tired uPVC with warped, discoloured or dated frames that no longer suit the home.

Poor security from loose handles, damaged hinges or locks that no longer catch correctly.

Noise problems from road or street noise entering through older glazing.

Rising heating costs from rooms needing more heat than they used to.

Warranty: Two Layers of Protection

Deceuninck warranty details should stay separate from Bowalker’s installation guarantee. Product warranty terms depend on the chosen material, frame, finish, glass and supply route, so the homeowner knows who is responsible for what.

The written quote and order paperwork set out the product warranty details and the Bowalker installation guarantee before installation starts.

Deceuninck product warranty

Deceuninck lists a 10-year manufacturer’s guarantee on selected window products and colour finishes. Bowalker confirms the exact product warranty details for your chosen frames, glass, hardware and finish before work begins.

Bowalker's 10-year installation guarantee

Bowalker guarantees its own workmanship for 10 years, and that guarantee is insurance-backed.

Real Installations: Before and After

Deceuninck project photos should show the difference between the old frame style and the new material and profile choice. A 2500 chamfered replacement, a 2800 sculptured frame, a flush window and a Decalu aluminium installation each change the character of a home in a different way.

Case studies may show the material and profile chosen, the colour, the hardware, the glass specification and the finished result after Bowalker’s installation team has completed the work.

How Installation Works

Bowalker’s installation process stays simple and in-house from the first visit to the finished job.

Book Your Free Consultation: One of our advisers visits to discuss the property, look at the existing openings, measure up and answer questions with no pressure.
Receive your no-obligation quote: Bowalker emails a detailed, itemised quote after the visit. Your deposit is fully refundable if the price changes once the job has been surveyed.
Let our in-house team install: Bowalker's own surveyors and installers carry out the work once your windows are ready, protect the work area and remove the old windows when the job is complete.

Get In Touch

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Ready to Install Deceuninck Windows with Bowalker?

Bowalker installs and replaces Deceuninck uPVC and aluminium windows throughout Sussex and Surrey. Every installation is handled by Bowalker’s own team and backed by Bowalker’s 10-year insurance-backed installation guarantee.

Call 01444 810 111 to arrange your free, no-obligation home consultation. Bowalker will talk through the material, profile, colour, glazing and hardware options, then provide a detailed quote.

Enhance the comfort, style, and energy efficiency of your home with our premium windows and doors, contact us today.

01444 810 111