Transform Your Home with Premium Triple-Glazed Windows

Transform your home with high-performance triple-glazed windows from Bowalker Windows Limited. Our in-house team measures and fits every window with precision, backed by FENSA registration (33081) and a 10-year insurance-backed guarantee for improved insulation, reduced external noise and 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 Triple-Glazed Windows Installation and Replacement Services

As a leading provider of triple-glazed windows, Bowalker Windows Limited offers professional installation and replacement services that improve your home’s energy efficiency, security and acoustic performance. Our window installers professionally measure, supply and fit a variety of triple-glazed window styles, including casement, sash, tilt-and-turn and bay and bow windows, ensuring a precise fit for every property. Whether replacing old glazing or upgrading to modern triple glazing, we guarantee a seamless installation experience.

Our triple-glazed windows feature advanced materials and multi-chambered profiles, delivering superior thermal insulation and significantly reduced heat loss. Designed to minimise external noise and increase security, they provide a comfortable and safe living environment. Each window is crafted to meet the highest standards, offering long-lasting performance with excellent energy efficiency.

Call Bowalker Windows on 01444 810 111 for professional triple-glazed window installation and replacement services. Our in-house team ensures accurate measurements and precise installation, all backed by our FENSA registration (No. 33081) and a 10-year insurance-backed guarantee for your complete peace of mind.

Materials

uPVC
Timber
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 Triple-Glazed Window Installation Services?

Homeowners choose Bowalker Windows Limited for triple-glazed window installation because of our commitment to quality, precision and customer satisfaction. As a FENSA-registered company (No. 33081), we ensure every installation meets the highest UK building regulations, with triple-glazed windows achieving U-values as low as 0.6 W/m²K for outstanding thermal performance. Our in-house team, experienced in both new installations and full replacements, delivers a hassle-free, reliable service, no subcontractors, no surprises. Our 10-year insurance-backed guarantee gives you complete assurance that your investment is protected for the long term.

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

Styles of Triple-Glazed Windows We Install and Replace

Casement windows are a popular choice for triple glazing, known for their side-hinged design that opens outwards to allow maximum airflow or locks shut for effective draught exclusion. These windows are ideal for energy efficiency, as the triple glazing helps retain heat, reduce heat loss and improve insulation.

At Bowalker Windows Limited, we specialise in installing and replacing triple-glazed casement windows, offering enhanced security and superior noise reduction for a more comfortable home. Our in-house installers ensure precise fitting and a high-quality, long-lasting solution for your property.

Designed for versatility, triple-glazed tilt-and-turn windows offer the option to tilt inwards for ventilation or open fully for easy cleaning and maximum airflow. These windows provide exceptional energy efficiency, reducing heat loss and enhancing insulation.

Bowalker Windows Limited specialises in the installation and replacement of triple-glazed tilt-and-turn windows, ensuring improved security, noise reduction and long-lasting performance. Our in-house team guarantees a precise fit, delivering a high-quality, energy-efficient solution for your home.

Triple-glazed sash windows combine classic style with modern energy efficiency. This traditional window design slides vertically, offering a timeless aesthetic whilst maintaining excellent insulation and noise reduction.

We specialise in installing and replacing triple-glazed sash windows, providing enhanced comfort and energy savings for your home. Our in-house team ensures precise measurements and flawless installation, so your sash windows retain their charm whilst benefiting from superior thermal performance and enhanced security.

With their elegant outward projection, triple-glazed bay and bow windows add extra space and an abundance of natural light to your home. The triple glazing enhances energy efficiency by providing superior insulation, reducing heat loss and improving noise reduction.

Bowalker Windows Limited specialises in the installation and replacement of triple-glazed bay and bow windows, offering both aesthetic appeal and long-lasting performance. Our in-house team ensures precise fitting, delivering a solution that enhances your home's comfort, security and energy efficiency.

Triple-glazed sliding windows offer a sleek and space-saving design, providing easy access to fresh air and unobstructed views. The smooth sliding operation allows for effortless ventilation, whilst the triple glazing ensures outstanding insulation, keeping your home warm and quiet.

Bowalker Windows Limited specialises in the installation and replacement of triple-glazed sliding windows, offering energy efficiency, enhanced security and long-lasting durability. These windows are the perfect choice for homeowners looking to combine modern style with superior 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 Triple-Glazed Windows?

Installing triple-glazed windows improves your home’s energy efficiency by providing superior insulation, reducing heat loss and lowering energy costs. They also enhance security, offer better noise reduction and protect your interiors from UV damage. With their added durability and minimal maintenance requirements, triple-glazed windows provide long-term comfort and efficiency for your home.

Six benefits of installing triple glazed windows are:

Superior Thermal Insulation

Improves energy efficiency, helping to keep homes warmer in winter and cooler in summer whilst reducing heating and cooling costs. Triple-glazed windows can achieve U-values as low as 0.6 W/m²K, compared with around 1.2 W/m²K for standard double glazing.

Enhanced Security

Strengthens protection against break-ins with toughened glass and advanced multi-point locking systems, ensuring greater safety for your home.

UV Damage Protection

Blocks harmful UV rays that cause fading and deterioration of furniture, fabrics and flooring, preserving the interior of your home.

Reduced Condensation and Moisture

Helps prevent moisture build-up, reducing the risk of damp and mould and maintaining a healthier indoor environment.

Enhanced Soundproofing

Reduces external noise levels, improving indoor comfort in busy or urban locations and creating a quieter, more peaceful living environment.

Improved Property Value and EPC Rating

Modern triple-glazed windows enhance your home's kerb appeal, improve its Energy Performance Certificate (EPC) rating and make it more attractive to prospective buyers.

How to Get Started With Triple-Glazed Windows Installation and Replacement at Bowalker?

Getting started with triple-glazed window installation and replacement at Bowalker is straightforward. First, book a free consultation in which we will assess your home and discuss your requirements. After the assessment, we provide a clear, no-obligation quote based on the best triple-glazed options for your property. Once you are happy to proceed, our skilled installation team will schedule a convenient time to fit your new windows, ensuring a seamless and high-quality installation.

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Areas We Serve

Bowalker provides professional triple-glazed window installation and replacement services across the UK, including Sussex, Surrey and London. We offer high-quality, energy-efficient windows, installed with precision and care, ensuring a seamless installation experience and lasting performance for homeowners 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

At Bowalker, our team is dedicated to providing exceptional service and craftsmanship in every triple-glazed window installation and replacement. With years of experience and a passion for quality, each member brings expertise in precision fitting, customer care and energy-efficient solutions. We take pride in our work and ensure every project is handled with the utmost attention to detail, delivering long-lasting, high-performance results for your home.

Triple-Glazed Windows Project Gallery

Two anthracite sash windows in Hassocks

Ready To Get Started With Bowalker Triple-Glazed Windows?

Installing triple-glazed windows enhances your home’s energy efficiency, security and comfort whilst also reducing external noise. Bowalker Windows Limited offers a seamless, full-service experience, ensuring each window is fitted to the highest standard using premium materials and advanced glazing technology.

Call 01444 810 111 today to schedule your free consultation and receive a no-obligation quote. Our in-house window installation team will ensure a perfect fit, providing long-lasting performance and improved comfort for your home.

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 Triple-Glazed Windows?

Triple-glazed windows consist of three panes of glass separated by two insulating cavities, which are typically filled with argon gas. This additional layer of glazing enhances thermal insulation, reduces heat loss and improves energy efficiency compared with double-glazed windows. Triple glazing also reduces noise, increases security and protects against UV damage, making it a highly effective choice for improving home comfort and energy performance.

How Much Does Triple-Glazed Window Installation Cost?

The cost of triple-glazed window installation ranges from £400 to £900 per window, depending on size, style and glazing specification, with installation rates starting from £150 per casement window and supply-and-install prices typically ranging from £1,000 upwards. Although the initial cost is higher than double glazing, triple-glazed windows offer long-term savings by improving energy efficiency and reducing heating costs. For an accurate estimate, book a free consultation and we will assess your requirements and provide a fully itemised, no-obligation quote.

What Materials Are Triple-Glazed Windows Made From?

Triple-glazed windows are typically made from high-quality glass, with the panes separated by cavities filled with insulating gas, such as argon or krypton, which improves energy efficiency. The frame can be made from various materials, including uPVC, timber or aluminium, each offering different benefits in terms of durability, insulation and aesthetic appeal. These materials work together to provide superior insulation, noise reduction and security.

How Long Does Triple-Glazed Window Installation Take?

Installing a triple-glazed window takes around 1-2 hours per window, depending on the size and style. The process may take longer where there are bespoke features or multiple windows to install, but we always maintain high-quality standards whilst delivering a prompt and efficient service.

What Guarantee Do You Provide on Triple-Glazed Window Installation?

We provide a 10-year insurance-backed guarantee on all triple-glazed window installations, covering both the windows and the installation work. This ensures complete peace of mind, protecting your investment against any defects or issues that may arise over time.

Do I Need to Be at Home During the Installation?

No, you do not need to be at home during the installation. Our team can complete the work whilst you are away, but it is helpful to be available for the initial assessment and to provide access to the installation areas.

How Much Does It Cost to Replace Triple-Glazed Windows?

The cost to replace triple-glazed windows ranges from £500 to £900 per window. The final cost varies depending on size, style and materials. For an accurate quote, we recommend scheduling a consultation to assess your specific requirements and provide a tailored estimate.

What Are the Maintenance Tips for Triple-Glazed Windows?

To keep your triple-glazed windows performing at their best, clean the glass regularly using warm soapy water and a soft, lint-free cloth. Avoid abrasive cleaners, which can scratch the glass or damage frame coatings. Inspect the rubber seals periodically for signs of wear or shrinkage and arrange for replacements if needed, as damaged seals reduce thermal performance. Keep frame drainage channels and weep holes clear of debris to prevent water pooling. Lubricate hinges, handles and locking mechanisms once or twice a year with a light silicone-based lubricant for smooth, reliable operation. Regular upkeep ensures your windows retain their thermal efficiency and appearance for years to come.