Transform Your Home with Premium Aluminium Windows

Upgrade your home with premium aluminium windows installed by Bowalker’s in-house team. Our surveyors and installers measure and fit every window with precision for secure, reliable and long-lasting results, backed by our FENSA registration (33081) and a 10-year insurance-backed guarantee for complete peace of mind.

Dimensions Max size 2.5M high x 1.5M wide
Thermally Broken As standard
Glass Astragal bars, Satin, Double Glazed

Professional Aluminium Windows Installation and Replacement Services

As a trusted aluminium window installer founded in 2009, Bowalker provides premium aluminium window installation and replacement services for homeowners seeking modern glazing solutions that improve kerb appeal, thermal efficiency and interior comfort. Our in-house window installers measure, install and replace a wide range of bespoke aluminium windows, including Casement Windows, Tilt and Turn Windows, Bifold Windows, Fixed Windows and Sash Windows, ensuring each installation complements the property’s architectural style and requirements.

Our aluminium window installation and replacement services support properties with bespoke designs, double-glazed units and contemporary profiles, using durable thermally-broken aluminium frames, energy-efficient glazing and thermal insulation systems to minimise heat loss. Each replacement is specified to suit the property’s requirements, incorporating secure multi-point locking systems and weather-resistant powder-coated finishes, with every installation completed by our fully in-house team, ensuring consistent workmanship and accountability from survey through to final fitting.

Call Bowalker at 01444 810 111 to arrange your free consultation for Aluminium Window Installation & Replacement Services. From measurement to aluminium window fitting and final inspection, our professional window installers deliver a reliable service, supported by FENSA-registered compliance (33081) and a 10-year guarantee.

Materials

uPVC
Timber

Standard Hardware

White
Brushed Chrome
Gold
Chrome

Standard Colours

Smooth White
Cream
Painswick Grey
Chartwell Green
Anthracite Grey
Irish Oak
Dual Colour
Paint to Order

Glass

Triple Glazed
Satin
Astragal Bars

Standard Layouts

Single
Double
Triple

Our Certifications And Professional Standards

Why Homeowners Choose Bowalker For Aluminium Windows Installation Services?

Homeowners choose Bowalker for aluminium window installation and replacement services for its 10-year insurance-backed guarantee, a hassle-free full-service experience and skilled in-house aluminium window installers with no subcontractors, ensuring reliable workmanship and FENSA-compliant installation standards. Founded in 2009, we have built our reputation on trusted aluminium window installation services, FENSA Reg: 33081 certification and a fully in-house team responsible for every fitting. We also provide a fixed-price guarantee and a full-service experience, ensuring transparent costs and a smooth process from consultation to completion.

10-year Insurance-backed Guarantee

Fensa Registered And Fully Compliant

Hassle-free, Full-service Experience

In-house Installers (No Subcontractors)

Fixed Pricing Guarantee, No Surprises

Types of Aluminium Windows We Install and Replace

At Bowalker, we install and replace Aluminium Casement Windows for modern, traditional and period properties. Featuring side-hung sashes and durable aluminium frames, these windows provide natural light, effective ventilation and clean sightlines suited to various architectural styles.

Our in-house window installers ensure precise fitting with energy-efficient double or triple glazing, draught-proof seals and secure multi-point locking systems. Each aluminium casement window installation supports thermal efficiency, kerb appeal and long-lasting, low-maintenance performance.

We install and replace Aluminium Tilt and Turn Windows for modern apartments, new builds and upper-floor properties. These dual-function windows tilt inward for secure ventilation or open fully inward for improved airflow and easy cleaning, combining practical functionality with slim aluminium aesthetics.

Our in-house window installers ensure precise fitting with energy-efficient double or triple glazing, thermally-broken aluminium frames, secure multi-point locking systems and weather-resistant powder-coated finishes, helping improve thermal efficiency, ventilation and home security.

Aluminium Bi-fold Windows feature a contemporary multi-panel design where two or more sashes fold and stack neatly to one side within slim aluminium frames, creating wide unobstructed openings between interior and exterior spaces. Common in kitchen extensions, garden rooms, orangeries and modern new builds, these windows maximise natural light, improve ventilation and maintain a clean architectural appearance.

We install and replace aluminium bi-fold windows using thermally-broken aluminium frames, energy-efficient glazing and secure multi-point locking systems for long-lasting, low-maintenance performance.

At Bowalker, we install and replace Fixed Aluminium Windows for modern, contemporary and period properties. Fitted with sealed non-opening glazed panels within thermally-broken aluminium frames, these windows provide natural light, unobstructed views and a clean, minimalist appearance suited to various architectural styles.

Our in-house window installers ensure precise fitting with energy-efficient double or triple glazing, weather-resistant powder-coated frames, draught-proof seals and secure fixing systems, helping improve thermal efficiency, weather resistance and reliable long-term functionality.

Aluminium Sash Windows suit Georgian, Victorian and period properties with their traditional vertically sliding sash design and thermally-broken aluminium frames. These windows provide effective ventilation, balanced natural light and an authentic heritage appearance suited to classic UK architecture.

We install and replace aluminium sash windows with precise fitting, energy-efficient double glazing, smooth sliding mechanisms, draught-proof seals and secure sash locking systems, helping maintain indoor comfort, traditional styling and reliable everyday performance.

No more windows to show

See Our Work In Action

Doors

Pool House

We helped create a stunning new-build pool house in West Sussex, featuring bespoke cornerless sliding doors and uninterrupted countryside views.

Rooflight

Living Room Extension

Partnership with builder to create a bright, modern living space with aluminium French doors, Bifold doors, matching windows, and a Lantern Rooflight.

Doors

Whole House Renovation

Assisted a developer with a full property renovation with, installing bespoke blue and black aluminium windows and doors.

Windows

Full Window & Door Upgrade

We helped transform an aging building with 56 new white uPVC windows and doors, enhancing thermal efficiency while keeping costs reasonable.

What Are the Benefits of Installing Aluminium Windows?

Installing aluminium windows provides improved thermal efficiency, slim modern aesthetics, enhanced property security, long-term durability, low-maintenance performance and increased natural light. Modern aluminium windows use thermally-broken frames, energy-efficient glazing and secure locking systems to improve indoor comfort, minimise heat loss, reduce maintenance requirements and complement both contemporary and traditional properties.

Seven benefits of installing aluminium windows include:

Improves Thermal Efficiency

Thermally broken aluminium frames and energy-efficient glazing help reduce heat loss and maintain comfortable indoor temperatures throughout the year.

Provides Slim Modern Aesthetics

Slim aluminium frames and large glazed areas create clean sightlines and maximise natural light within the property.

Supports Better Home Security

Secure multi-point locking systems and strong aluminium construction provide reliable protection against intrusion.

Offers Long-Term Durability

Powder-coated finishes and durable aluminium frames provide reliable everyday use with minimal maintenance requirements.

Reduces Maintenance Requirements

Aluminium window systems resist warping, rotting and corrosion, helping maintain appearance and functionality over time.

Increases Property Value

Contemporary aluminium windows improve visual appeal, energy efficiency and practical functionality, supporting overall property desirability and resale value.

Reduces External Noise

Double and triple-glazed aluminium windows provide effective acoustic insulation, helping reduce traffic noise and improving everyday comfort, particularly in urban and roadside properties.

How to Get Started With Aluminium Windows Installation and Replacement at Bowalker?

Getting started with aluminium window installation and replacement at Bowalker begins with booking your free consultation and receiving a no-obligation quote from our experienced installation team. Our aluminium window installers assess your property and recommend suitable aluminium window styles, including Casement Windows, Tilt and Turn Windows, Bifold Windows, Fixed Windows and Sash Windows. Each installation is tailored to complement your property’s design while improving thermal efficiency, natural light, durability and long-term functionality.

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Areas we Serve

Bowalker provides professional aluminium window installation and replacement services across Sussex, Surrey and London, delivering high-quality aluminium windows with precision and care. Our skilled aluminium window installers deliver reliable workmanship, precise fitting and ongoing support for homeowners seeking durable, energy-efficient and visually appealing aluminium window solutions throughout these regions.

What Our Happy Customers Say

EXCELLENT

Based on 36 reviews

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Marchants Estate Agents Hassocks 2 weeks ago

Excellent service from a local independent company. Highly recommend.

Andy Clarke 3 days ago

I had replacement windows installed. Design and advice was good and cost was competitive. Installation was started in a good time to a good standard.

Abi Hosier a month ago

Bowalker have been incredibly helpful and provided me with extremely useful information about the windows and doors at a property I moved into, previously supplied by them. Great customer service, really recommend

steph park a month ago

Bowalker replaced all of our windows and patio doors in November. They are very efficient and got the job done in the pouring rain but did it quick and professionally. We had a couple of teething issues with the doors after completion and they did not hesitate to come out and rectify the issue. Excellent customer service and a friendly team. Would highly recommend

Nic Downer Edited 3 months ago

We had a total of 6 windows fitted at end of June 2025 (2 bathroom(frosted), 1 hallway,1 dining room and two big bay windows complete with 2 window boards). Took 5 days in total as bay windows were load bearing ,the window boards were not in warehouse so took extra time to arrive and fit , the silicone/mastic finish wasn’t great and they cut one end of a window board wrong , but after a telephone call a new team of fitters came out and rectified the mistakes of original fitters that we had noticed , a window pane had got scratched in delivery so they replaced that as well. This was a big job that entailed some mistakes but over time was rectified by bowalker windows by sending out another team of fitters to fix some minor mistakes of original fitters . We went on a recommendation from a work colleague who had used Bowalker windows in the past as were very good. Maybe just improve your fitters mastic silicone skills a bit more but is is an old house of 110 years and nothing is level in this house

Mark Fitzpatrick 4 months ago

As a property developer operating across Brighton and Hove, I rely on trusted trades who consistently deliver — and Bowalker Windows Ltd, led by Zack Newman, is one of those partners. We specify their windows across all our developments because their products meet the high standards our clients expect, installations are completed on schedule, and site coordination with our contractors is seamless. Zack is responsive, pragmatic, and straightforward about lead times and costs, which makes planning and handovers far easier. Their workmanship is excellent, energy-performance claims are reliable, and they stand behind their warranty. Competitive pricing, professional teams, and reliable aftercare mean we’ll continue to use Bowalker Windows on future projects. Highly recommended for any developer or home owners in the Brighton & Hove area.

mark Matthew 4 months ago

5 stars! I recently had all the windows in my home replaced by Bowalker Windows and couldn’t be happier with the result. From my very first contact I worked with Zack Newman — he was professional, knowledgeable, and transparent about pricing and timelines. The installation team arrived on time, worked efficiently, and left the house clean. The new windows look fantastic, operate smoothly, and have already made a noticeable difference in comfort and noise reduction. Excellent customer service from start to finish — I highly recommend Zack and Bowalker Windows to anyone looking for quality work and a hassle-free experience.

Graeme Edited 5 months ago

I am 9 years into our windows installation from Bowalker Windows. I emailed them on Sunday with an issue and by 3pm Monday afternoon they were at my home sorting the issue. This company's attitude to exceeding customer service and going the extra mile is in their DNA. These guys are just amazing from cradle to grave when it comes to windows and doors. I wouldn't go anywhere else. Simply fantastic.

Tatiana Gurova 6 months ago

The installation went quickly and without any problems. I recommended them as excellent specialists.

Joanna Steadman 6 months ago

We have used Bowalker on several occasions for replacement windows and doors and have always been pleased with the work, product price snd communication

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

01444 810 111

Meet Our Team

Our team at Bowalker comprises experienced, fully in-house aluminium window installers who carry out every survey, fitting and final inspection themselves, with no subcontractors involved at any stage. Each installer is trained to FENSA-compliant standards and works to the same exacting specifications on every project, whether a single casement or a full multi-window replacement. From first consultation through to completion, you deal with the same professional team, ensuring consistent workmanship and a smooth installation experience throughout.

Aluminium Windows Project Gallery

Two anthracite sash windows in Hassocks

Ready To Get Started With Bowalker Aluminium Windows?

Upgrading to aluminium windows improves your home’s energy efficiency, ventilation and modern appearance while supporting long-term durability and low-maintenance performance. Bowalker provides a full-service, hassle-free installation experience with a fully in-house team of aluminium window installers, premium aluminium window systems and a 10-year insurance-backed guarantee, ensuring reliable quality and lasting performance.

Call 01444 810 111 today to book your free aluminium window consultation and receive a no-obligation quote. Our experienced aluminium window installation and replacement team manages every stage with precision, ensuring your aluminium windows are professionally fitted to improve thermal efficiency, reduce external noise and complement your property’s architectural style.

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

01444 810 111

Frequently Asked Questions

What Are Aluminium Windows?

Aluminium windows are modern window systems made with strong, lightweight aluminium frames that provide slim profiles, large glass areas and long-lasting durability. Commonly installed across a wide range of residential properties, aluminium windows offer excellent weather resistance, low-maintenance performance and energy-efficient glazing options, with many systems lasting 40 years or more, requiring only occasional cleaning and periodic hardware checks to maintain performance.

How Much Does Aluminium Window Installation Cost?

Aluminium window installation costs range from £150 to £1,500 per window, depending on the window type, size, glazing specification and any structural requirements. As a guide, installation rates start from £150 per casement window, with supply costs added on top based on the chosen frame style, glazing option and finish. Bifold windows and larger panoramic units carry higher installation rates reflecting the additional labour and complexity involved. Contact our team for a free, no-obligation quote tailored to your property.

What Materials Are Aluminium Windows Made From?

Aluminium windows are primarily manufactured from 6063-T5 or 6061 aluminium alloys, which are composed of aluminium, magnesium and silicon. These materials are extruded into slim, high-strength and corrosion-resistant window profiles. Modern aluminium window systems also include polyamide thermal breaks for improved insulation and durable powder-coated finishes for weather resistance and long-lasting performance.

How Long Does Aluminium Window Installation Take?

Aluminium window installation usually takes 1 to 2 days, depending on the number of windows, property access, window size and installation complexity. Larger projects involving bespoke aluminium window designs, structural adjustments or multiple window replacements may require additional installation time.

What Guarantee Do You Provide on Aluminium Window Installation?

Bowalker provides a 10-year insurance-backed guarantee on aluminium window installation, meaning your guarantee remains valid and protected regardless of any change in our business circumstances. Our aluminium window installations are completed by fully in-house installers and supported by FENSA-registered compliance standards to ensure reliable fitting, lasting performance and customer confidence.

Do I Need to Be at Home During the Installation?

No, you do not need to remain at home during aluminium window installation, provided property access and installation preferences are arranged in advance. Our in-house aluminium window installers carry out every installation professionally, ensuring secure workmanship, careful property handling and fitting completed in accordance with the agreed project requirements.

How How Much Does It Cost to Replace Aluminium Windows?Much Does It Cost to Replace Sash Windows?

Aluminium window replacement costs range from £300 to £1,500 or more per window, depending on the window type, size, glazing specification, frame style and any structural requirements. Unlike a new installation, replacement work includes the removal and disposal of your existing windows as standard, alongside surveying, fitting and final inspection, all completed by our fully in-house team with no hidden charges. Factors such as triple glazing, powder-coated colour finishes and thermally-broken frame upgrades may also influence the final cost.

Call Bowalker on 01444 810 111 for a free, no-obligation quote tailored to your property.