Transform Your Home with Premium Fixed Windows

Enhance your property with premium fixed window installation from Bowalker Windows. Our in-house installation team measures and fits every fixed window with precision to ensure a secure fit, clear sightlines and lasting performance. Our FENSA registration (33081) and 10-year insurance-backed guarantee provide added confidence in the quality, insulation and durability of every installation.

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

Professional Fixed Windows Installation and Replacement Services

As a trusted fixed-window installer, Bowalker Windows delivers high-quality fixed-window installation and replacement services for homeowners seeking improved insulation, natural light and modern glazing solutions. Founded in 2009, the company has developed proven expertise in installing fixed-frame, picture, floor-to-ceiling, shaped, transom and side-panel windows, ensuring each installation aligns with the property’s design and performance requirements. Our in-house installers measure, supply and fit every window with precision, maintaining consistent quality across all projects.

Our fixed-window services use durable glazing materials, thermally efficient frames and secure sealed units to improve energy performance, reduce heat loss and support long-term reliability. Each installation pairs high-performance double glazing, including Low-E glass, argon-filled cavities and warm-edge spacer bars, with weather-resistant sealing systems, helping achieve U-values as low as 1.2 W/m²K while ensuring durability, security and low maintenance.

Call Bowalker Windows on 01444 810 111 for expert fixed window installation and replacement services. Our in-house team manages measurement, installation and final inspection with precision, delivering consistent results backed by FENSA registration (33081) and a 10-year insurance-backed guarantee.

Materials

uPVC
Timber

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 Fixed Windows Installation Services

Homeowners choose Bowalker for fixed-window installation for precise workmanship, transparent fixed pricing and a fully managed experience delivered by our in-house team across uPVC, aluminium and timber. Founded in 2009, we complete every installation without subcontractors and are backed by a 10-year insurance-backed guarantee and FENSA registration (reg. 33081). Our in-house installers fit each fixed window using Low-E double glazing, argon-filled cavities and thermally broken frames, achieving U-values as low as 1.2 W/m²K and full compliance with Building Regulations Part L.

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 Fixed Windows We Install and Replace

A fixed-frame window is a non-opening window designed to maximise natural light and maintain a sealed, energy-efficient structure. These windows improve insulation by reducing heat loss, eliminating draughts and offering excellent airtightness, achieving high air-permeability classes to BS EN 12207.

Bowalker Windows installs fixed-frame windows with Low-E double glazing, argon-filled cavities, warm-edge spacer bars and thermally efficient frames for long-term performance and U-values as low as 1.2 W/m²K. They are ideal for living rooms, extensions and feature walls where clear views and natural light are required and no ventilation is needed.

A picture window is a large, fixed window designed to serve as a picture frame for the scenery while allowing maximum natural light into the space. These windows do not open, which improves insulation and reduces heat loss.

We install picture windows with high-performance Low-E double glazing, durable frames and secure sealing systems for long-term efficiency and Window Energy Ratings up to A++. They are ideal for living rooms, front elevations and scenic-facing areas where uninterrupted views are required.

We install floor-to-ceiling fixed windows, a full-height glazing solution that extends from floor level to the ceiling, functioning as a wall of light that increases daylight exposure and visually opens up interior spaces. Our installations use reinforced frames and large-format Low-E double glazing with warm-edge spacer bars to maintain structural strength, energy efficiency and long-term performance.

These windows are ideal for modern homes, extensions and open-plan living areas where brightness and spatial openness are required.

Bowalker Windows installs shaped fixed windows, a bespoke glazing solution made in custom forms such as circular, arched, triangular or gable designs to match unique architectural features. They are often used in gable ends, above doors and windows, and in period or feature elevations, and can be shaped to follow roof pitches so the glazing aligns with the building's lines.

Our designs maintain a sealed, energy-efficient structure while adding distinctive visual character, using precision manufacturing, durable frames and high-performance double glazing for accurate fitting and long-term reliability.

Transom fixed windows feature a slim horizontal design positioned above doors or larger window units to increase natural daylight and complement the overall glazing layout. They are manufactured using durable uPVC, aluminium or timber frames with high-performance Low-E double glazing and secure sealed units for reliable thermal efficiency.

Our window installation team fits transom fixed windows with precision, ensuring energy efficiency, low maintenance and long-term performance in hallways, entrance areas and living spaces.

Fixed side-panel windows are vertical fixed windows installed alongside doors or main window units to increase natural daylight and create a wider glazed appearance. They are often used to flank a central window in designs such as bay or bow setups, improving symmetry.

Constructed from uPVC, aluminium or timber with double glazing and sealed units, they improve thermal efficiency. Our window installation team installs them with precision to ensure energy efficiency, security, low maintenance and a consistent, well-aligned finish.

See Our Work In Action

What Are the Benefits of Installing Fixed Windows?

Installing fixed windows improves insulation, increases natural daylight, reduces maintenance requirements and strengthens security through their sealed, non-opening design. Modern fixed windows use high-performance Low-E double glazing and thermally efficient frames to reduce heat loss, maintain indoor comfort and support long-term durability, while providing clear, uninterrupted views and Window Energy Ratings up to A++.

Six key benefits of installing fixed windows are:

Better Insulation & Energy Efficiency

Improves thermal performance by using sealed, argon-filled glazing units that reduce heat transfer and maintain stable indoor temperatures, with U-values as low as 1.2 W/m²K.

Low Maintenance & Long-Lasting

Uses durable materials such as uPVC or aluminium that resist wear, reducing ongoing maintenance and ensuring long-term performance.

Maximises Natural Light

Allows more daylight into interior spaces, creating brighter rooms and reducing the need for artificial lighting during the day.

More Affordable Installation

Requires fewer mechanical components than opening windows, making installation more cost-effective while maintaining performance.

Improves Security Without Openings

Eliminates opening mechanisms, reducing potential entry points and increasing overall home security, with PAS 24 options available.

Reduces Heat Loss & Drafts

Maintains an airtight seal that prevents draughts and supports consistent indoor comfort throughout the year.

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

Getting started with fixed-window installation and replacement at Bowalker involves booking a free consultation, receiving a no-obligation quote and proceeding with installation by our skilled window installation team. Our experienced team assesses your property, recommends suitable fixed-window options such as picture or floor-to-ceiling designs and ensures each installation meets your energy-efficiency, design and performance requirements.

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Areas we Serve

Bowalker provides professional Fixed window installation services across Sussex, Surrey and London, delivering high-quality, premium rooflights with precision and care. Our fixed-window installation team ensures consistent workmanship, reliable installation and ongoing support for homeowners throughout these regions.

What Our Happy Customers Say

EXCELLENT

Based on 36 reviews

Google Review

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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

Meet Our Team

Our team at Bowalker comprises highly skilled window installers and specialists who deliver premium installations with precision and care. Every fixed-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.

Fixed Windows Project Gallery

Two anthracite sash windows in Hassocks

Ready To Get Started With Bowalker Fixed Windows?

Installing fixed windows improves your home’s insulation, natural light and overall appearance while delivering a sealed, low-maintenance glazing solution. Bowalker Windows provides a hassle-free, full-service installation with a fully in-house team of window installers, high-performance Low-E double glazing 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 fixed-window installation team handles every stage with precision, ensuring each window is fitted accurately for lasting performance and a clean, modern design.

Frequently Asked Questions

What Are Fixed Windows?

Fixed windows are non-opening windows designed to provide natural light, clear views and improved insulation through a fully sealed glazing unit. These windows do not include hinges, handles or opening mechanisms, which increases thermal efficiency, reduces draughts and improves overall security. Fixed windows are commonly used in living rooms, stairwells and feature walls, often combined with opening windows to create balanced, functional glazing designs.

How Much Does Fixed Window Installation Cost?

Fixed-window installation in the UK costs between £200 and £900 per window fully fitted, rising to £1,500+ for large picture or floor-to-ceiling units. Being non-opening, fixed windows are generally cheaper than casement windows, with standard picture windows averaging around £500 to £850 supply-only and labour adding roughly £100 to £150 per window. Final pricing depends on size, frame material (uPVC, aluminium or timber), glazing and property access.

What Materials Are Fixed Windows Made From?

Fixed windows are made from materials such as uPVC, aluminium or timber, selected for durability, insulation and structural performance. These materials are combined with double or triple glazing, Low-E coatings and sealed units to improve thermal efficiency, security and long-term reliability.

How Long Does Fixed Window Installation Take?

Fixed window installation takes 1 to 2 hours per window, with most standard installations completed within a single day. The total time may vary depending on window size, access, removal of existing frames and any required structural adjustments.

What Guarantee Do You Provide on Fixed Window Installation?

Bowalker Windows Limited provides a 10-year insurance-backed guarantee on all fixed-window installations, ensuring peace of mind and long-lasting performance. This covers workmanship and installation quality, giving homeowners confidence that their fixed windows are installed to the highest professional standards and comply with FENSA regulations and Building Regulations Part L.

Do I Need to Be at Home During the Installation?

No, you do not need to be home for the fixed-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 fixed-window design and requirements.

How Much Does It Cost to Replace Fixed Windows?

Replacing fixed windows in the UK costs between £300 and £1,400 or more per window, depending on size, material and glazing specification. Standard uPVC replacements run from £500 to £800 fitted, aluminium from £700 to £1,400 and timber from £600 to £1,200. The final cost is also affected by removal of existing frames, access requirements and any structural repairs, and replacing several windows at once usually reduces the per-window price.

What Are the Maintenance Tips for Fixed Windows?

Maintenance tips for fixed windows include regular cleaning of the glass and frames, checking seals to prevent draughts and inspecting sealant or caulk for cracks every 6 months to ensure airtight insulation. uPVC and aluminium frames require minimal upkeep, while timber frames may need occasional sealing or repainting to maintain durability and performance.

Fixed Windows