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AluK Windows – Installed by Bowalker
AluK’s aluminium windows are built to combine sleek modern aesthetics with exceptional thermal and security performance, and Bowalker installs and replaces them throughout Sussex and Surrey. Whether you are upgrading ageing frames, replacing steel-look heritage windows or fitting out a contemporary new build, we survey and fit the full AluK range with our in-house installers.
There are no salespeople, no subcontractors and no pressure, just honest advice, a detailed quote and a finished job backed by a 10-year insurance-backed guarantee alongside AluK’s own product warranty.
Call Bowalker on 01444 810 111 to book a free home consultation and see what AluK windows would do for your home.
What Are AluK Windows?
AluK windows are a comprehensive range of aluminium glazing systems, with the best-known residential option being the 58BW, available as a casement, flush casement, tilt-before-turn, heritage steel-look and top-swing reversible, covering everything from traditional period homes to contemporary new builds in a single, well-engineered platform. AluK is an international designer and engineer of these systems, with the UK division established in 1994 and operating from a substantial base in South Wales. Depending on the profile and glazing chosen, U-values of aluk windows range from 1.2 to 1.7 W/m2K, with the thermally enhanced HI versions comfortably exceeding current UK Building Regulations on double glazing alone. Every configuration is independently tested and certified. The 58BW ST series replicates the narrow sightlines of classic steel windows in aluminium, making it the ideal system for period and heritage projects where the appearance of steel is required without its drawbacks.
Bowalker installs and replaces the full AluK residential range across Sussex and Surrey, including the 58BW casement and flush windows, the heritage steel-look 58BW ST series, and AluK’s bifold and sliding door range, so you can use one manufacturer and one set of matching finishes throughout the property.
Engineered and certified to the highest UK standards
AluK’s 58BW range is independently tested, PAS 24 certified and Secured by Design approved, backed by more than 30 years of dedicated aluminium glazing development in the UK market.
One system, every residential need
The 58BW is available as a standard casement, flush casement, tilt-before-turn, heritage steel-look and reversible window. That breadth of choice means we can specify the right configuration for each property type without switching manufacturers.
The right window for period and contemporary homes
The 58BW ST heritage series replicates the slim sightlines and aesthetic of original steel windows in aluminium, making it genuinely suited to the Victorian, Edwardian and interwar housing stock that is common across Sussex and Surrey.
No subcontractors, ever
Our own advisers, surveyors and installers quote and complete every job, so the people who specify your windows are the people who fit them.
Why Bowalker Installs AluK Windows?
We do not fit other companies’ products, and we do not install every brand we are asked to. We choose the systems we would be happy to put in our own homes, and AluK earns its place for a few clear reasons:
It is an approach our customers have rated ‘Excellent’ on Google and 9.9 on Checkatrade, and one we will not compromise on.
AluK Window Styles Available from Bowalker
AluK’s 58BW platform is modular and broad, so you can specify the right opening style and performance level for each elevation without changing manufacturer.
The window options Bowalker installs are:
58BW Casement and Flush Casement
AluK’s core residential window, available in top-hung, side-hung, bottom-hung, fixed light and multi-light configurations with clean lines and advanced thermal performance. The flush casement variant provides a sleek, minimal exterior profile for contemporary builds.
58BW ST Heritage (Steel-Look)
The steel-look version of the 58BW, with ultra-slim sightlines and hardware designed to replicate traditional steel window aesthetics. The right choice for interwar and period properties, conservation area projects and any home where original crittall-style steel windows are being replaced.
58BW Tilt-Before-Turn
Offering exceptional child safety and easy cleaning from inside the home, the tilt-before-turn configuration tilts inwards from the top before swinging fully open, providing secure ventilation and practical access.
Looking beyond windows, we also fit AluK’s bifold and sliding door range, so you can use one manufacturer and one set of matching finishes throughout the property.
Colour and Finish Options Available
Because AluK’s windows are aluminium, they take a powder-coated finish that is tough, low-maintenance and will not fade, flake or need repainting. White is the standard, but the range runs far wider across four curated collections totalling over 66 colours and finishes, and profiles can be specified with different colours inside and outside.
The finishes Bowalker can supply include:
Elements
Eighteen smooth, matte RAL shades with a hard-wearing, scratch-resistant surface, designed for a clean contemporary look.
Homestead
A soft-feel, low-gloss textured finish in warm tones and classic shades, aimed at traditional and heritage properties where a period-sympathetic colour is needed.
Specturm
Twenty-one tactile, textured metallic finishes using an advanced polyester resin for exceptional gloss retention and strong weather resistance.
Urbane
Fourteen smooth metallic finishes that replicate the appearance of an anodised surface, suited to commercial and high-end residential projects.
Dual Colour
Available across the range, letting you specify a different shade inside and outside so the window suits both your interior and your kerb appeal.
Stock colours for faster lead times
Matt Anthracite Grey, Matt Black and Gloss White are held in stock for projects where turnaround matters. All powder-coated finishes meet marine-grade standards, making them well suited to coastal properties across Sussex and Surrey.
All four collections sit within clearly defined pricing tiers, and stock colours carry the shortest lead times. We will set out exactly where your chosen finish falls when we quote. Whichever you pick, we match it consistently across your windows and doors for a unified result.
Performance and Features of AluK Windows
AluK builds its windows to a measured, certified standard. The 58BW delivers class-leading performance across thermal efficiency, weather resistance and security, and does so across a wide range of configurations, so you are not trading performance for style regardless of which opening type you choose.
Across the range, the features Bowalker can specify include:
- Warmth and lower bills: Thermally broken aluminium frames and high-performance glazing keep heat in, with U-values as low as 1.3 W/m²K for double glazing and 1.1 W/m²K for triple glazing on the 58BW Flush system.
- Double or triple glazing: A choice of glazing units to suit each project’s thermal and acoustic requirements.
- Quieter rooms: Double or triple glazing combined with sealed aluminium frames significantly reduces traffic and street noise.
- Tested security: PAS 24 certified and Secured by Design approved, meeting Document Q for new build and insurance requirements. Multi-point locking as standard across the range.
- Tilt-before-turn option: Ventilation and easy cleaning from inside the home, with a child-safe operation that tilts before it turns, reducing the risk of accidental full opening.
- A choice of glass: Obscure and decorative options for bathrooms and privacy, alongside clear units.
Replacing Your Windows with AluK
If your windows let in draughts, mist up between the panes or no longer lock as they should, replacing them is usually more cost-effective than paying for repeated repairs. The tell-tale signs that a window has reached the end of its working life include:
Bowalker replaces tired timber, uPVC, steel or aluminium windows with AluK throughout the home, matching new frames to your property’s style and planning requirements. The 58BW ST heritage series is particularly well suited to replacing original steel crittall windows in period properties across Sussex and Surrey. Every replacement is surveyed and fitted by our in-house team, and the old windows are removed and taken away on completion, leaving a warmer, quieter and more secure home.
Draughts, or rooms that feel cold near the windows
Condensation or misting trapped between the panes of glass
Stiff handles, or locks that no longer catch properly
Corroded or failing steel frames that are beyond economic repair
Heating bills that keep creeping up
Warranty: Two Layers of Protection
New windows are a long-term investment, so it is worth knowing exactly who stands behind them. With Bowalker, you are covered on two fronts, the product and the fitting, by two separate guarantees.
In practice, both the manufacturer and the installer are accountable, and you have it in writing from each of them. It is the same cover we put behind every installation, and one of the reasons our customers return to us and recommend us years after the job is done.
AluK product warranty
AluK guarantees the window itself, including the frame, hardware and sealed glazing units, against manufacturing faults, so any issue with the product is the manufacturer’s responsibility to put right.
Bowalker's 10-year installation guarantee
We guarantee our own workmanship for 10 years, and that guarantee is insurance-backed. An independent insurer underwrites it, so your cover stands even in the unlikely event we were no longer trading, a level of protection a verbal promise cannot match.
Real Installations: Before and After
The best measure of any window is the difference it makes on a real home, not in a brochure. The gallery below shows AluK installations our own team has carried out across Sussex and Surrey, the same homes before we started and after we had finished, so you can judge the change for yourself.
Want the full story behind a project? Our case studies walk through several recent installations, from the first visit to the finished home.
How Installation Works
We keep the process simple, with no pushy sales visits and no subcontractors at any stage.
- Book Your Free Consultation: One of our advisers will visit to discuss what you need, measure up and answer your questions, with no obligation and no pressure.
- Receive your no-obligation quote: After the visit, we email a detailed, itemised quote. Your deposit is fully refundable if the price changes once we have surveyed the job.
- Relax while we fit your windows: Our own surveyors and installers carry out the work, typically within six weeks, and take your old windows away once they have finished.
Get In Touch
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Ready to Install AluK Windows with Bowalker?
Whether you are replacing tired windows or fitting out a new project, Bowalker installs and replaces AluK windows and doors throughout Sussex and Surrey. All installations are backed by a 10-year insurance-backed guarantee, with no subcontractors involved at any stage.
Call us on 01444 810 111 to arrange your free, no-obligation home consultation. We will talk through your options, measure up and provide a detailed quote, with your deposit fully refundable if anything changes after the survey.
Enhance the comfort, style, and energy efficiency of your home with our premium windows and doors, contact us today.