Transform Your Home with Premium Heritage Windows

Enhance your property with heritage window installations from Bowalker Windows. Our experienced in-house installers measure every opening and install each window with exacting precision, with no subcontractors involved at any stage. Every installation is FENSA-registered (No. 33081) and supported 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 Heritage Windows Installation And Replacement Services

As a leading heritage window installer, Bowalker Windows Limited delivers premium installation and replacement services for homeowners seeking period-accurate glazing that enhances property value, appearance and thermal performance. Founded in 2009, we have built proven expertise across the full range of heritage window styles, including sash, casement, bay, bow oriel, and arched windows. Our in-house team measures and installs each window with precision, ensuring that every fitting complements the property’s historic character and meets conservation area and Listed Building requirements.

Our heritage window services use durable, energy-efficient glazing materials, high-performance thermal breaks and multi-chambered profiles to maintain both security and period style. Every replacement is tailored to your property’s specific requirements, from advanced multipoint locking systems and draught-proof seals to weather-resistant hardware, ensuring lasting performance, thermal efficiency and authentic period character.

Call Bowalker on 01444 810 111 to arrange your heritage window installation or replacement, with precise measurement, period-accurate design and professional fitting from our in-house team. All work is backed by FENSA registration (No. 33081) and a 10-year insurance-backed guarantee.

Materials

uPVC
Aluminium
Timber

Standard Hardware

Chrome
Satin
Black Monkey Tail
Gold Teardrop

Standard Colours

Anthacite Grey
Black
White
Chartwell Green
Painswick
Irish Oak
Dual Colour
Paint to Order

Glass

Triple Glazed
Obscure
Astragal bars

Standard Layouts

Single
2 x 2
Bay

Our Certifications And Professional Standards

Why Homeowners Choose Bowalker For Heritage Windows Installation Services?

Homeowners choose Bowalker for premium heritage window installation, a hassle-free full-service experience and the reassurance of a trusted in-house team. Founded in 2009, we complete every installation without subcontractors, maintaining a single standard of quality from the first measurement to the final fitting. Our 10-year insurance-backed guarantee and FENSA registration (No. 33081) reflect our commitment to reliable workmanship, whether you are restoring a listed building or updating a period 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 Heritage Windows We Install and Replace

A sash heritage window features two vertically sliding sashes within a single frame, maintaining a flush exterior profile when closed. This double-hung configuration is characteristic of Georgian and Victorian architecture, offering authentic period aesthetics, controlled ventilation and a classic appearance suited to historic properties.

Bowalker installs sash heritage windows with slimline double glazing, draught-proof brush seals, multipoint locking and run-through sash horns for period-accurate detailing, available in timber-look uPVC and powder-coated aluminium to suit listed buildings and conservation area properties.

Made from thermally efficient uPVC, aluminium or timber, casement heritage windows are side-hinged, outward-opening windows that sit flush with the outer frame, the correct profile for most period properties and a key requirement in conservation areas. Bowalker installs flush casement heritage windows with slimline double glazing with a 12–16mm cavity, friction-stay hinges, multipoint locking and weather-resistant seals.

Period detailing options include ovolo or chamfered bead profiles and Georgian astragal glazing bars across a wide range of finishes. Every installation combines authentic period aesthetics with the thermal performance and low maintenance of modern glazing systems.

We install bay and bow heritage windows that project outward from the main wall, increasing natural light and expanding views without altering the room's footprint. Bay windows use angled frames canted at 45 or 90 degrees for a squared projection, whilst bow windows use narrow frames to form a gentle curve.

Both are defining features of Victorian, Edwardian and interwar properties. Bowalker installations incorporate sash or casement opening lights, high-performance double glazing and weather-resistant seals for authentic period character and low maintenance.

Oriel heritage windows are cantilevered structures projecting from an upper storey, supported by corbels or timber brackets, and unlike bay windows, do not extend to ground level. Associated with medieval, Tudor and Victorian architecture, they take square, canted or polygonal forms, adding depth and grandeur to a façade whilst increasing natural light.

Bowalker installs and replaces oriel windows using uPVC, aluminium or timber frames with high-performance double glazing, working in accordance with conservation area and Listed Building guidelines throughout.

Arched and swept-head heritage windows feature curved tops that add elegance and architectural distinction across Georgian, Gothic Revival, Victorian and Edwardian properties, making them a common requirement in conservation areas and listed buildings. Bowalker installs arched and swept-head windows in engineered aluminium with a 33mm slimline profile and 40-year manufacturer-rated lifespan.

Mechanically jointed uPVC provides smooth, weld-free curves, while timber offers the most authentic finish. Each window is made to measure, with arched glazing bars, decorative head detailing and high-performance double glazing throughout.

Our in-house installers fit cottage heritage windows, a traditional glazing style characterised by multiple small panes divided by slim astragal bars, most commonly seen in rural cottages, Arts and Crafts homes and 1930s properties. Available as casement or double-hung sash in aluminium or uPVC, these windows come in four-over-four and six-over-six pane arrangements.

Optional leaded light detailing is available. Each installation incorporates modern double glazing for strong thermal efficiency whilst retaining the small-pane aesthetic and handcrafted character of the original style.

Leaded light heritage windows feature small individual panes joined with lead cames, the narrow lead channels that give these windows their characteristic grid pattern and period elegance. Originating in medieval glazing and carried through to Victorian, Arts and Crafts, and Art Nouveau architecture, they remain among the most recognisable heritage window styles.

Bowalker installs leaded light windows in timber, aluminium or uPVC, with diamond, rectangular and square pane configurations, varying came widths and coloured or textured glass. Toughened or laminated backing panels can also be incorporated where safety standards require.

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See Our Work In Action

What Are the Benefits of Installing Heritage Windows?

Installing heritage windows delivers measurable improvements across comfort, security, energy efficiency and property value. Modern heritage windows, including sash and casement styles, use high-performance glazing, multi-chambered frames and thermally broken profiles to reduce heat loss, lower U-values and maintain consistent indoor temperatures throughout the year, all whilst preserving an authentic, period-accurate appearance.

The six key benefits below explain why heritage window replacement is one of the most effective home improvements for period properties.

Better Noise Reduction

Sealed frames and acoustic double glazing significantly reduce external noise, improving indoor comfort in busy or urban locations and creating a quieter, more peaceful living environment.

Increases Property Value

Correctly specified heritage windows strengthen kerb appeal and can add up to 10% to the resale value of a period property, making them one of the most cost-effective improvements for homes with authentic architectural features.

Low Maintenance & Durable

Modern uPVC and aluminium frames resist rot, warping and corrosion, eliminating the need for regular repainting or sealing. Combined with multipoint locking hardware and weather-resistant seals, heritage windows are built for long-term performance with minimal upkeep.

Retains Heat & Reduces Heating Costs

High-performance double glazing and thermally broken frames reduce heat loss and lower heating costs year-round. All heritage windows are manufactured to comply with Part L of the Building Regulations and are available with A-rated energy performance as standard.

Stronger Security With Modern Locking

Multipoint locking systems, toughened glazing options and reinforced frames provide robust protection against intrusion. Our heritage windows are available to PAS 24 security standards, giving homeowners confidence that period style does not come at the expense of modern home security.

Attractive Design

Period-accurate heritage windows restore a property's architectural identity and improve kerb appeal in ways that plastic replacement windows cannot replicate. For listed buildings and conservation area properties, correct glazing is a planning requirement as well as an aesthetic choice.

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

Getting started with heritage window installation at Bowalker begins with a free consultation and no-obligation quote. Our experienced team assesses your property, recommends suitable heritage options, such as sash or casement windows, and ensures that every design complements your architectural style whilst meeting your energy-efficiency and performance requirements.

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Areas we Serve

Bowalker provides professional heritage window installation and replacement services across East Sussex, West Sussex, Surrey and London. Our in-house installers deliver consistent workmanship and reliable service for homeowners throughout these regions, ensuring every heritage window is installed to the same exacting standard regardless of location.

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 highly skilled heritage window installers who deliver every installation with precision and care. All work is carried out fully in-house, ensuring consistent quality and accountability from consultation to completion. We are committed to preserving your property’s architectural character whilst delivering reliable, long-lasting performance.

Heritage Windows Project Gallery

Two anthracite sash windows in Hassocks

Ready To Get Started With Bowalker Heritage Windows?

Installing a heritage window improves your home’s comfort, energy efficiency and visual appeal whilst preserving its traditional character. Bowalker Windows Limited delivers a hassle-free, full-service installation with a fully in-house team of installers, premium 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 heritage window installation and replacement team handles every stage with precision, ensuring each window is fitted accurately for lasting performance and authentic period 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 Heritage Windows?

Heritage windows are traditional-style windows designed to replicate the appearance and detailing of historic properties whilst incorporating modern materials and performance features. They are commonly found in listed buildings, conservation areas and period homes, including Victorian, Edwardian, Georgian and interwar properties, where maintaining architectural authenticity is important and where conservation officers or planning authorities may require period-accurate glazing as a condition of any replacement or renovation work.

How Much Does Heritage Window Installation Cost?

Heritage window installation costs range between £600 and £1,500 per window for standard residential sizes, though the final figure depends on several factors: the size and number of windows, the frame material (uPVC, timber or aluminium), the glazing specification (double or triple glazing), and the complexity of the design. Additional considerations that affect cost include site-specific installation requirements such as scaffolding or difficult access, the need for structural adjustments, and any conservation area or Listed Building regulations that specify particular materials or glazing configurations.

What Materials Are Heritage Windows Made From?

Heritage windows are available in uPVC, aluminium and timber, each suited to different property types and planning requirements. uPVC offers strong thermal performance and low maintenance, aluminium provides slim sightlines and a corrosion-resistant powder-coated finish, and engineered timber remains the most authentic option, frequently required by conservation officers and Listed Building consent conditions. All three are compatible with double glazing, and your choice will be confirmed during your free consultation.

How Long Does Heritage Window Installation Take?

Heritage window installation typically takes 30 to 60 minutes per window for a standard casement or sash replacement, whilst larger or more complex windows such as bay, bow or arched styles may take 1-2 hours each. For a standard three-bedroom house, a full installation takes around 2 days, allowing for precise fitting and finishing. Installation time may vary depending on factors such as removal of existing frames, required structural repairs, window size and brief exposure of the opening during frame removal in poor weather.

What Guarantee Do You Provide on Heritage Window Installation?

Bowalker Windows Limited provides a 10-year insurance-backed guarantee on all heritage window installations, covering both workmanship and installation quality. All installations are carried out in compliance with FENSA regulations (registration No. 33081), and a FENSA certificate is issued upon completion, which your conveyancer will require if you sell the property.

Do I Need to Be at Home During the Installation?

No, you do not need to be present at the property during installation, provided we have agreed access arrangements and your window specifications are confirmed in advance. Our fully in-house installers will carry out the work professionally, with careful handling of your property throughout, and full adherence to your specified heritage window design and finish requirements. We will ensure your home is clean, secure and weathertight before we leave.

How Much Does It Cost to Replace Heritage Windows?

The cost of replacing heritage windows typically ranges from £500 to £2,000 or more per window, depending on frame material, glazing specification, size and design complexity. Straightforward casement or sash replacements in standard sizes sit towards the lower end, whilst bespoke designs, large bay or oriel windows and installations on listed buildings or in conservation areas, where specific materials or glazing units may be required, tend towards the higher end. All prices quoted by Bowalker are fixed and inclusive of VAT, survey, installation and disposal of existing frames.

What Are the Maintenance Tips for Heritage Windows?

Maintenance tips for heritage windows include cleaning frames and glazing regularly with a mild detergent and soft cloth, lubricating hinges, friction stays and locking mechanisms once or twice a year, and inspecting perimeter sealant annually, resealing with a flexible mastic if cracking is visible. Draught-proof seals and brush strips should be checked and replaced annually, particularly on sash windows where brush seals along the meeting rail are prone to wear. Timber frames require repainting or resealing every three to five years, whilst uPVC and aluminium frames are largely maintenance-free beyond regular cleaning.

Heritage Window