Transform Your Home with Premium Crittall-Style Windows

Transform your home with premium Crittall-style window installation from Bowalker Windows. Our in-house team carefully measures and fits every window, ensuring secure installation and slim steel-style sightlines throughout. All work is FENSA-registered (reg. 33081) and covered by a 10-year insurance-backed guarantee.

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

Professional Crittall-Style Window Installation and Replacement Services

As a leading Crittall-style window installer, Bowalker Windows Limited delivers premium installation and replacement services for homeowners seeking slimline steel-style glazing that enhances property value, light flow and architectural design. Founded in 2009, we have developed proven expertise in Crittall-style window design and installation. Our in-house window fitters measure, supply and fit a wide range of systems, including internal, bespoke, black steel, commercial and external Crittall-style windows, ensuring each installation complements the property’s character.

Our Crittall-style window services use durable, thermally efficient materials, high-performance glazing and precision-engineered frames to maintain security, insulation and visual appeal. Where required, we upgrade existing windows to meet modern performance standards, using secure locking systems and weather-resistant finishes to ensure long-term reliability and functionality.

Call Bowalker windows on 01444 810 111 for expert Crittall-style window installation and replacement services. Our in-house installers provide accurate measurements, tailored designs, installation and final inspection, ensuring every window is fitted correctly, with FENSA registration (no. 33081) and a 10-year insurance-backed guarantee.

Materials

Timber
uPVC
Aluminium

Standard Hardware

Chrome
Satin
Gold Knob
Antique Black Knob

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 Crittall-Style Windows Installation Services ?

Homeowners choose Bowalker Windows for Crittall-style window installation to receive premium workmanship, a stress-free, full-service experience and the reliability of our skilled in-house team. Founded in 2009, we are recognised for our 10-year insurance-backed guarantee, FENSA registration (no. 33081) and commitment to completing every installation without subcontractors. Our mission is to add value to properties by installing durable, secure and visually striking Crittall-style windows that improve both comfort and appearance. From initial consultation to final fitting, we support our customers at every stage, delivering precisely installed steel-style windows tailored to each property.

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 Crittall-Style Windows We Install and Replace

Internal Crittall-style windows feature slim steel or steel-style frames with glazing bars that create a clean, grid-style appearance. They allow natural light to flow between rooms while maintaining defined spaces such as kitchens or home offices.

Bowalker Windows installs internal systems using durable materials with precision glazing and secure fittings, and also replaces existing internal windows to improve light flow and functionality. Suitable for modern interiors, they offer strong visual character with low maintenance.

Made to precise specifications, bespoke Crittall-style windows use thermally efficient materials to suit both traditional and contemporary properties. These windows feature customised dimensions, glazing bar layouts and frame finishes to match the property’s design.

We install bespoke systems with slimline double glazing, secure locking mechanisms and weather-resistant seals, offering a 60+ year lifespan and also replace existing windows where upgrades are required.

Commercial steel Crittall-style windows feature robust steel or steel-style frames with structured glazing that enhances natural light and visibility. Ideal for offices, retail units and commercial façades, these windows provide durability, security and a refined industrial appearance.

We install commercial Crittall-style windows with high-performance glazing, secure locking systems and precise in-house fitting and can also replace existing windows to improve efficiency, appearance and long-term performance.

Our in-house window installers bring years of experience in fitting black steel Crittall-style windows that deliver a bold, industrial appearance with slim frames and defined glazing bars. These windows suit both modern and period properties,

adding contrast while maintaining natural light flow. We install high-performance systems with secure locking and durable finishes and also upgrade existing windows to improve efficiency, appearance and long-term reliability.

External steel Crittall-style windows are designed to withstand outdoor conditions while maintaining slim frames and distinctive glazing bars. They suit extensions, façades and full property renovations, providing durability, weather resistance and strong visual appeal.

Our skilled in-house window fitters install external systems with high-performance glazing, secure locking and protective finishes and can also modernise existing windows to improve insulation, security and overall appearance. They are well suited to properties where design impact and weather performance are both priorities.

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 Crittall-Style Windows?

Installing Crittall-style windows increases natural light, improves property value, enhances durability, strengthens security, reduces maintenance, and introduces a refined industrial design. Modern Crittall-style systems use slim steel or aluminium frames, high-performance glazing and secure locking mechanisms to improve insulation, maximise light flow and maintain indoor comfort whilst delivering a distinctive architectural appearance.

The seven benefits of installing Crittall-style windows are:

Improves Thermal Efficiency

Thermally broken frames combined with double or triple glazing reduce heat loss, improving energy performance and lowering heating costs year-round.

Increases Natural Light

Slim frames and larger glass panels let in more daylight, improving brightness throughout living spaces such as kitchens, lounges and extensions.

Adds a Timeless Industrial Design

Steel-style frames with defined glazing bars create a clean, architectural look that suits both modern homes and period properties.

Delivers Stronger and More Durable Frames

Steel or aluminium frames provide structural strength, ensuring long-term durability and wear resistance.

Enhances Security

Advanced multipoint locking systems improve protection against intrusion, providing reliable security for your property.

Requires Minimal Maintenance

Powder-coated finishes and durable materials reduce the need for regular upkeep whilst maintaining appearance over time.

Increases Property Value

High-quality Crittall-style windows improve kerb appeal and support higher resale value, particularly in design-focused renovations and extensions.

How to Get Started With Crittall-Style Window Installation and Replacement at Bowalker?

Getting started with Crittall-style window installation and replacement at Bowalker involves booking a free consultation, receiving a no-obligation quote and proceeding with installation by our in-house window fitting team. Our experienced fitters assess your property, recommend suitable Crittall-style options such as internal, bespoke or external systems and ensure each installation complements your property’s design while meeting performance, security and energy-efficiency requirements.

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Areas We Serve

Bowalker provides professional Crittall-style window installation services across Sussex, Surrey and London, delivering high-quality, premium steel-style windows with precision and care. Our team of window installers ensures consistent workmanship, reliable installation and continuous support for homeowners throughout these regions.

What Our Happy Customers Say

EXCELLENT

Based on 36 reviews

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Mark 22 hours ago

Had a problem with our door which was installed 3 years ago - Bowalker - Dean - came to site within 24 hours and helped resolved- thank you ! Very pleased with professional and prompt service

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 10 months ago

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

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 highly skilled window installers and specialists who deliver premium, luxury installations with precision and care. Every cottage window installer works fully in-house, ensuring consistent quality, accountability and a seamless experience from consultation to completion. We are committed to making your home warm, safe and stylish, with a focus on customer satisfaction and long-lasting performance.

Crittall-Style Windows Project Gallery

Two anthracite sash windows in Hassocks

Ready to Get Started with Bowalker Crittall-Style Windows?

Installing Crittall-style windows improves your home’s natural light, security and visual appeal while introducing a distinctive steel-style design. Bowalker Windows provides a stress-free, full-service installation with a fully in-house team of skilled window fitters, high-performance glazing systems and a 10-year insurance-backed guarantee for long-term reliability.

Call 01444 810 111 today to arrange your free consultation and receive a no-obligation quote. Our specialist Crittall-style window installation team manages every stage with precision, ensuring each window is fitted accurately for lasting performance and a refined architectural finish.

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 Crittall-Style Windows?

Crittall-style windows are steel-framed windows characterised by slim profiles and distinctive glazing bars that create a grid-style appearance. They are commonly used in period properties, industrial-style homes and modern extensions where strong architectural design is required. Modern Crittall-style windows use steel or aluminium frames with high-performance glazing to improve insulation, security and durability whilst maintaining the original industrial aesthetic and maximising natural light.

How Much Does Crittall-Style Window Installation Cost?

Crittall-style window installation costs range between £600 and £2,500+ per square metre, depending on the frame material. Aluminium Crittall-style windows cost £600 to £1,200 per window, while genuine steel frames range from £1,200 to £2,500+ per window. Final pricing depends on factors such as size, glazing type (double or triple), bespoke design requirements, frame finish and installation complexity, particularly for renovations or structural adjustments.

What Materials Are Crittall-Style Windows Made From?

Crittall-style windows are made from materials such as steel or aluminium, chosen for their strength, slim profiles and durability. Steel frames provide a traditional industrial appearance with high structural integrity, while aluminium offers a lighter, low-maintenance alternative with similar aesthetics. These materials are typically combined with double or triple glazing, secure locking systems and weather-resistant finishes to improve insulation, security and long-term performance.

How Long Does Crittall-Style Window Installation Take?

Crittall-style window installation takes 1 to 2 hours per window, depending on size and complexity, with a standard property installation completed within 1 to 3 days. Installation time may vary based on factors such as removal of existing frames, bespoke design requirements, structural adjustments and site access, particularly for renovations or extensions.

What Guarantee Do You Provide on Crittall-Style Window Installation?

Bowalker Windows provides a 10-year insurance-backed guarantee for all Crittall-style window installations, ensuring peace of mind and long-lasting performance. This covers workmanship and installation quality, giving homeowners confidence that their Crittall-style windows are fitted to the highest professional standards and comply with FENSA requirements (no. 33081).

Do I Need to Be at Home During the Installation?

No, you do not need to be home for the Crittall-style window installation as long as we have access to the property and your preferences are confirmed in advance. Our fully in-house team of installers will carry out the work professionally, ensuring secure handling, careful installation and full adherence to your specified Crittall-style window design and requirements.

How Much Does It Cost to Replace Crittall-Style Windows?

The cost to replace Crittall-style windows ranges between £1,200 and £3,200+ per window, depending on the material chosen. Aluminium steel-style replacements start from £600 per window, while steel replacements range from £1,200 to £3,200 per window. Overall costs vary based on size, glazing specifications, bespoke design requirements and installation complexity, particularly for structural alterations or upgrades from older window systems.

Do Crittall-Style Windows Require Planning Permission?

In most cases, replacing like-for-like windows does not require planning permission under permitted development rights. However, if your property is listed or located in a conservation area, listed building consent or planning approval may be required before installation begins. Bowalker Windows can advise on compliance requirements during your free consultation.

What Are the Maintenance Tips for Cottage Windows?

Maintenance tips for Crittall-style windows include regularly cleaning frames and glass to remove dirt and debris, checking seals to prevent draughts and lubricating hinges and locking systems for smooth operation. Steel frames may require occasional inspection for surface wear, while aluminium systems benefit from low-maintenance finishes. Keeping drainage channels clear and inspecting fittings ensures long-term performance, durability and consistent appearance.