Transform Your Home with Premium Vertical Sliding Windows

Enhance your home with premium vertical sliding window installation from Bowalker Windows. Our in-house team measures and fits every window with precision, ensuring a secure finish and full compliance with current Building Regulations. All installations are 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 Vertical Sliding Windows Installation and Replacement Services

As a trusted specialist in vertical sliding window installations and replacements, Bowalker Windows Limited offers homeowners premium, energy-efficient solutions that preserve the aesthetic integrity of their property while providing modern performance. Whether you are upgrading to energy-efficient, double-glazed windows or replacing your old vertical sliders, Bowalker specialises in installing windows that deliver both style and functionality.

Our skilled window installers ensure that every vertical sliding window is installed with precision, from accurate measurements to flawless fitting. We offer a range of customisable options in uPVC, aluminium and timber-effect finishes, including single-sash, double-sash and heritage-style vertical-sliding windows, making it easy to match your home’s architecture and improve energy efficiency. With durable multi-chambered profiles and advanced glazing technology, our windows provide superior thermal performance and security.

Call Bowalker on 01444 810 111 to book your free consultation for vertical sliding window installation or replacement. Whether you are upgrading to energy-efficient windows or replacing older models, we guarantee professional service, lasting performance and peace of mind, all supported by our 10-year insurance-backed guarantee.

Materials

Timber
uPVC

Standard Hardware

Chrome
Satin
Gold Knob
Antique Black Knob

Standard Colours

Smooth White
Cream
Painswick Grey
Chartwell Green

Glass

Triple Glazed
Satin
Astragal Bars

Standard Layouts

Single
Double
Triple

Featured partners

Why Homeowners Choose Bowalker For Vertical Sliding Window Installation Services

Choose Bowalker Windows Limited for vertical sliding window installation and replacement to experience a commitment to precision, durability and energy efficiency. Since 2009, we have specialised in providing customised solutions that enhance both the style and performance of your home. Our FENSA registration (reg. 33081) ensures every installation meets the highest industry standards, while our in-house specialists guarantee a seamless, no-subcontractor process from start to finish. Covered by our 10-year insurance-backed guarantee, Bowalker provides long-lasting, secure and energy-efficient windows that improve your home’s comfort and value.

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 Vertical Sliding Windows We Install and Replace

Single-sash vertical sliding windows offer a perfect blend of classic charm and modern functionality. Featuring a single movable sash that slides smoothly up and down, these windows provide excellent ventilation and easy operation.

Ideal for period homes and modern properties, single-sash windows enhance the aesthetic appeal, energy efficiency and security of your home. Bowalker specialises in the precise installation and replacement of single-sash windows, whether in uPVC, timber or aluminium, ensuring a perfect fit and long-lasting performance tailored to your home’s style.

Double-sash vertical-sliding windows are an excellent option for homeowners seeking classic design and improved ventilation control. With two independently movable sashes, these windows offer flexible operation and easy airflow adjustment.

For homeowners with Georgian or Victorian properties, box-sash vertical sliding windows are a timeless choice that blends traditional style with modern functionality. These windows feature a distinctive box frame design and use pulleys and weights for smooth, quiet operation.

Ideal for maintaining the heritage character of your home, box-sash windows also offer improved ventilation and energy efficiency. Bowalker installs box-sash windows in uPVC, timber-effect and aluminium finishes, ensuring a precise fit and lasting performance that complements your home's period character.

When it comes to versatility and convenience, tilt-and-turn vertical sliding windows are an excellent choice for homeowners. These windows offer two modes of operation: they can be tilted inward for easy ventilation or fully turned to function like a casement window,

allowing for easy cleaning and improved security. Perfect for modern homes, tilt-and-turn windows offer enhanced energy efficiency and a sleek design. Bowalker ensures precise installation and seamless replacement, delivering durable and long-lasting windows that fit your home’s needs perfectly.

Heritage and Traditional vertical sliding windows are the perfect choice for homeowners with Victorian, Georgian or Edwardian properties who want to preserve the classic beauty of their home while improving energy efficiency and security.

These windows replicate the traditional design, using modern materials like timber-effect uPVC or timber frames, offering an effective blend of historic charm and modern performance. We provide reliable installation and replacement, ensuring that your heritage windows fit perfectly, enhance your home’s aesthetic and offer long-lasting durability and improved functionality.

For homeowners seeking easy-to-operate windows, spring-balance sash vertical-sliding windows offer a modern alternative to traditional pulley systems. These windows use a spring-balance mechanism

Each installation includes energy-efficient double glazing, durable timber frames and secure locking systems, ensuring effective ventilation, reduced heat loss and dependable long-term 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 Vertical Sliding Windows?

Installing vertical sliding windows improves ventilation control, increases energy efficiency, enhances security and maintains the aesthetic character of your home. Fitted with double glazing, weatherproof seals and secure locking systems, they provide effective insulation, reduced energy costs and reliable long-term performance, making them particularly well suited to period properties and conservation area installations.

The eight benefits of installing vertical sliding windows are:

Excellent Ventilation Control

Easily controls airflow with the sliding mechanism, making vertical sliding windows ideal for rooms that need fresh air without taking up extra space.

Improved Energy Efficiency

Improves energy efficiency with features like double glazing and weatherproof seals, helping reduce heat loss and save on energy bills.

Space-Saving Design

Saves space with a sliding mechanism that eliminates the need for outward-opening windows, making it ideal for tight spaces.

Enhanced Security

Durable frames and modern locking systems provide better protection against break-ins.

Easy Cleaning

Simplifies cleaning with easy access to both sides of the window, enabling effortless maintenance.

Versatile Design Options

Offers a range of design options to suit different architectural styles, with customisable materials and finishes for both traditional and modern homes

Enhances Weather Protection

Effectively seals out draughts and reduces heat loss, ensuring a more comfortable living space year-round.

Low Maintenance and Durability

Ensures low maintenance and durability with high-quality materials that resist wear and tear, guaranteeing long-lasting performance.

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

To get started with vertical sliding window installation or replacement at Bowalker, simply book a free consultation with our in-house team. We will assess your home, discuss your specific requirements and help you choose the ideal vertical sliding windows to match your style and budget. After this, we will provide you with a no-obligation quote based on the options we discussed. Once you are ready, our skilled window installers will handle the installation or replacement with precision, ensuring your new windows are fitted perfectly for optimal performance and durability.

Get In Touch

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Areas We Serve

Bowalker provides professional vertical sliding window installation and replacement across Sussex and Surrey. Our in-house team delivers high-quality, reliable service to homeowners throughout these regions, ensuring every installation meets our exacting standards.

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.

Meet Our Team

Our dedicated team of window installers at Bowalker is committed to providing top-quality vertical sliding window installation and replacement services. From experienced installers to helpful customer support, each member plays a vital role in delivering precise and efficient solutions for your home. We take pride in offering personalised service, ensuring your needs are met with the highest standards of professionalism and care.

Vertical Sliding Windows Project Gallery

Two anthracite sash windows in Hassocks

Ready To Get Started With Bowalker Vertical Sliding Windows?

At Bowalker, we simplify the process of installing or replacing your vertical sliding windows, ensuring a seamless experience from start to finish. Whether you are upgrading outdated windows or installing new ones, our in-house team will guide you through every step, providing tailored solutions that enhance your home’s comfort, energy efficiency and security.

Call 01444 810 111 to book your free consultation and receive a no-obligation quote. Whether you are installing a new vertical sliding window or replacing an existing one, we will help you choose the right option and ensure professional, efficient service.

Frequently Asked Questions

What Are Vertical Sliding Windows?

Vertical sliding windows are a type of window where one or both sashes move vertically, rather than swinging outward like traditional windows. These windows are known for their space-saving design, allowing easy ventilation without requiring extra space to open. They are often used in period properties for their classic look, but modern versions come with energy-efficient features such as double glazing and weatherproof seals, which improve insulation and security. Vertical sliding windows provide a blend of aesthetic appeal and functionality, making them a popular choice for both traditional and contemporary homes.

How Much Does Vertical Sliding Window Installation Cost?

The cost of installing a vertical sliding window ranges from £600 to £1,500 per window for uPVC, depending on size, specification, and installation complexity. Timber vertical sliding windows start at £1,200 and can reach £2,500 or more, while aluminium options are similarly priced. Additional costs may apply if existing frames require replacement or specific customisations are needed.

What Materials Are Vertical Sliding Windows Made From?

Vertical sliding windows are made from materials such as uPVC, timber and aluminium, chosen to combine traditional aesthetics with modern durability, insulation and security. These materials are often paired with double glazing and weatherproof seals to enhance thermal performance and ensure long-lasting reliability.

How Long Does Vertical Sliding Window Installation Take?

Installing vertical sliding windows takes 1 to 2 hours per window for professional installers, depending on factors such as window size, type and complexity. For a home with 8–10 windows, installation generally takes 1 to 2 days, but larger projects or custom designs may take 4 to 7 days.

What Guarantee Do You Provide on Vertical Sliding Window Installation?

We provide a 10-year insurance-backed guarantee on all sash window installations, ensuring peace of mind and long-lasting performance. This covers workmanship and installation quality, giving homeowners confidence that their sash windows are installed to the highest professional standards and comply with FENSA regulations

Do I Need to Be at Home During the Installation?

No, you do not need to be home for the vertical sliding window installation as long as we have access to the property and your preferences are confirmed in advance. Our window installers will carry out the work professionally, ensuring secure handling, careful installation and full adherence to your agreed design and requirements.

How Much Does It Cost to Replace Vertical Sliding Windows?

The cost to replace vertical sliding windows typically ranges from £500 to £1,500 per window for uPVC, rising to £2,500 or more for timber and similarly for aluminium, depending on material choice, design complexity and window size. The final cost may also be influenced by the number of windows being replaced and any additional features, such as triple glazing or bespoke fittings.

What Are the Maintenance Tips for Vertical Sliding Windows?

To keep your vertical sliding windows in top condition, clean the tracks and sashes regularly to remove dirt and debris. Check the weather seals for wear and replace them when necessary to maintain energy efficiency. Lubricate the sash runners and locks once a year with a silicone-based lubricant for smooth operation. Finally, inspect the frames for damage and address any issues promptly to ensure long-lasting performance.