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Transform Your Home's Windows with Premium Astragal Bars
Enhance your home with authentic divided-light detailing through professionally installed astragal bars. Our in-house installers survey and install astragal bar systems with precision, ensuring accurate alignment, traditional styling and compatibility with modern glazing. Where replacement windows or glazing units are involved, Bowalker provides FENSA-registered installation support backed 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
Certifications And Partners
Professional Astragal Bar Installation & Replacement Services
As a leading astragal bar installer founded in 2009, Bowalker provides professional astragal bar installation and replacement services for homeowners seeking authentic divided-light detailing without replacing their existing window systems. Our in-house installers survey and install astragal bar layouts across casement, sash, fixed, tilt and turn and bifold windows, ensuring each configuration complements the property’s architectural style and existing glazing proportions.
Our astragal bar installations work across sealed double-glazed units, heritage-style profiles and bespoke window designs, combining decorative bar systems with Low-E glazing, argon-filled insulated glass units, secure fixing methods and weather-resistant finishes. This approach recreates traditional divided-light appearances whilst maintaining modern thermal performance, security and long-term reliability.
Call Bowalker Windows on 01444 810 111 to arrange your free consultation for astragal bar installation and replacement services. From measurement to astragal bar fitting and final inspection, our professional window installers deliver a reliable service, backed by our 10‑year guarantee, with FENSA registration (33081) covering any glazing replaced as part of the work.
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
Types of Windows We Install and Replace with Astragal Bars
uPVC Windows with Astragal Bars
uPVC Windows with Astragal Bars
Traditional divided-light character and low-maintenance durability come together in uPVC windows with astragal bars, making them a practical choice for cottages, heritage homes and conservation properties requiring authentic styling with modern performance. Astragal bars sit externally over the glazing unit and are often paired with internal Georgian bars or spacer details to recreate traditional multi-pane proportions whilst retaining the benefits of modern sealed glazing. We install and replace these windows with multi-chambered profiles, Low-E double glazing, argon-filled sealed units, secure multipoint locking and realistic woodgrain foil finishes for long-term reliability.
Learn More →Timber Windows with Astragal Bars
Timber Windows with Astragal Bars
Preserving original architectural details in listed buildings, conservation areas and period homes calls for timber windows with astragal bars, where authentic joinery character and carefully designed divided-light detailing work together. Our in-house installers install and replace these windows using engineered timber, period-appropriate profiles, high-performance glazing, microporous paint or stain finishes and traditional ironmongery, ensuring carefully positioned astragal bars and sympathetic proportions that improve weather resistance, security and thermal performance without compromising historic character.
Learn More →Aluminium Windows with Astragal Bars
Aluminium Windows with Astragal Bars
Slim, durable frames and traditional glazing patterns make aluminium windows with astragal bars well suited to modern extensions, renovated period homes and architectural projects where larger glazed areas require classic detailing. The strength of aluminium allows narrower sightlines and larger glass areas whilst maintaining structural stability. Bowalker Windows installs and replaces these windows with thermally broken aluminium frames, Low-E glazing, durable RAL powder-coated finishes and secure multipoint locking systems, combining traditional divided-light appearance with modern energy performance.
Learn More →Double Glazed Windows with Astragal Bars
Double Glazed Windows with Astragal Bars
Traditional multi-pane appearance and modern insulated glazing work together in double glazed windows with astragal bars, recreating authentic divided-light proportions without requiring individually glazed panes. Astragal systems combine external decorative bars with internal glazing details to create a deeper, more traditional divided-light appearance. We install and replace these windows with Low-E glass, argon-filled insulated glazing units, warm-edge spacer bars and carefully aligned bar layouts, delivering improved insulation, security and authentic architectural detailing.
Learn More →Triple Glazed Windows with Astragal Bars
Triple Glazed Windows with Astragal Bars
Where suitable glazing specifications are selected, triple glazed windows with astragal bars combine traditional divided-light detailing with enhanced thermal and acoustic performance. Three panes of Low-E glass and two insulating cavities can help reduce heat loss and external noise whilst maintaining the structured appearance of traditional window designs. Our in-house installers specify and install these windows with carefully aligned astragal detailing, high-performance seals and glazing systems selected to suit the frame design, helping improve insulation, comfort and year-round performance.
Learn More →Bathrooms, entrance halls, ground-floor rooms and period-style properties benefit from obscure glass windows with astragal bars, where patterned privacy glazing sits within a traditional divided-light frame to limit visibility without sacrificing natural light. Glazing options range from light diffusion through to near-total opacity, allowing privacy levels to be matched to each room. We install and replace these windows with carefully positioned bar layouts and secure frames, ensuring the finished design complements the property's architecture whilst delivering reliable everyday performance.
Learn More →A smooth frosted finish and traditional astragal bar detailing give satin glass windows a refined, heritage-inspired appearance suited to bathrooms, hallways, entrance areas and contemporary homes where privacy and daylight need to work together. The even surface diffuses light across the room without the texture variation of patterned obscure glazing. Our in-house installers fit and replace these windows with precise bar alignment, secure fixing and carefully matched proportions, creating an understated divided-light design with reliable long-term glazing performance.
Learn More →Fixed Windows with Astragal Bars
Fixed Windows with Astragal Bars
Large glazed areas with decorative divided-light detailing and no opening mechanism define fixed windows with astragal bars, making them well suited to feature elevations, stairwells, entrance halls and architectural openings where ventilation is provided elsewhere. The fixed frame allows symmetrical bar layouts and uninterrupted glazing patterns across the full window area. We install and replace these windows with accurately positioned astragal detailing, high-performance glazing and secure frames, creating strong architectural features with excellent natural light and dependable thermal performance.
Learn More →Casement Windows with Astragal Bars
Casement Windows with Astragal Bars
Heritage-inspired styling and practical ventilation come together in casement windows with astragal bars, where side-hung or top-hung opening sashes combine with authentic divided-light detailing. Georgian, Victorian, Edwardian and modern properties benefit from this balance of traditional appearance and everyday usability. We install and replace these windows with Low-E glazing, secure multipoint locking systems and carefully aligned astragal layouts, ensuring each installation complements the property's architecture whilst delivering reliable performance throughout the year.
Learn More →Tilt and Turn Windows with Astragal Bars
Tilt and Turn Windows with Astragal Bars
Modern functionality and traditional styling combine in tilt and turn windows with astragal bars, offering inward-tilting ventilation for everyday airflow and a fully opening sash for easier cleaning and access. These windows are particularly suitable for upper-floor rooms, modern homes and period-inspired renovations where practical operation is important alongside heritage detailing. Our in-house installers install and replace these windows with secure hardware, energy-efficient glazing and accurately configured astragal layouts, creating a balanced combination of convenience and classic appearance.
Learn More →Vertical Sliding Windows with Astragal Bars
Vertical Sliding Windows with Astragal Bars
Traditional sash proportions and authentic divided-light detailing define vertical sliding windows with astragal bars, making them ideal for Georgian, Victorian and Edwardian properties where maintaining period character is important. Modern spring balance systems replace traditional weight-and-cord mechanisms, providing smoother operation and reduced maintenance. Bowalker Windows installs and replaces these windows with energy-efficient glazing, draught-resistant seals, secure locking systems and carefully positioned astragal detailing to preserve authentic sightlines whilst improving insulation and everyday usability.
Learn More →Bifold Windows with Astragal Bars
Bifold Windows with Astragal Bars
Specialist bifold windows with astragal detailing are designed to create a wide, unobstructed connection between indoor and outdoor spaces without losing traditional divided-light character. Multiple folding panels suit extensions, garden rooms and open-plan living areas where increased daylight and ventilation are priorities. We install and replace bespoke bifold windows with astragal detailing using precision-engineered tracking systems, secure locking hardware and carefully designed bar layouts, delivering modern functionality with timeless architectural character.
Learn More →Window Brands We Install
Our team at Bowalker is made up of highly skilled, certified window installers and specialists who deliver premium, luxury installations with precision and care. Every window installers work 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, focusing on customer satisfaction and long-lasting performance.
Not sure which brand is right for your home? Talk to our team →
Why Homeowners Choose Bowalker For Astragal Bar Installation
Homeowners choose Bowalker for astragal bar installation services for its 10-year insurance-backed guarantee, structured full-service approach and skilled in-house installers who complete every project without subcontractors, ensuring consistent workmanship and compliance. Established in 2009, Bowalker operates under FENSA Reg: 33081 certification with a dedicated team responsible for precise astragal bar fitting. Our astragal bar installation service preserves traditional aesthetics, creates authentic divided-light detailing and integrates with double-glazed units for modern performance. A fixed-price guarantee ensures transparent costs and a controlled process from consultation through to final installation.
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
Astragal Bars Project Gallery
What Are the Benefits of Astragal Bar Installation?
Installing astragal bars enhances traditional and Georgian-style appeal, complements period and conservation-area homes, adds character without replacing your windows, requires minimal maintenance and cleaning, suits a wide range of window styles and traditional or contemporary property designs. This installation creates a defined, divided-light appearance while working with existing glazing to maintain performance and long-term durability.
6 key benefits of astragal bar installation are:
Enhances Traditional & Georgian Style Appeal
Creates authentic divided-light patterns that replicate Georgian window layouts, improving visual accuracy and reinforcing classic architectural detailing across the property.
Complements Period and Conservation Area Homes
Maintains heritage aesthetics required in conservation settings, supporting compliance with planning expectations while preserving original design features.
Adds Character Without Replacing Your Windows
Improves the appearance of existing glazing by introducing structured pane divisions, allowing property upgrades without full window replacement.
Requires Minimal Maintenance and Cleaning
Uses durable materials such as uPVC or aluminium, reducing upkeep needs and ensuring long-term performance with simple cleaning routines.
Complements All Window Styles and Home Designs
Integrates with window types such as sash, casement, bay and fixed windows, maintaining consistent visual detailing throughout the property.
Increases Property Value and Kerb Appeal
Improves external presentation and architectural definition, supporting higher property value and creating a stronger first impression.
How to Get Started with Astragal Bar Installation and Replacement at Bowalker
Getting started with astragal bar installation at Bowalker begins with arranging a free consultation, receiving a no-obligation quote and scheduling installation with our professional in-house installers. We assess your existing windows, recommend suitable astragal bar layouts and glazing options, including traditional divided-light patterns and applied bar designs, that align with your property’s architecture. Every installation is surveyed and completed with precision, ensuring accurate detailing and consistent proportions whilst maintaining window performance.
- Book Your Free Consultation
- Receive Your No-obligation Quote
- Proceed To Installation
Get In Touch
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Areas we Serve
Bowalker provides professional astragal bar installation services across Sussex, Surrey and London, delivering high-quality glazing enhancements with precision and care. Our astragal bar installation team ensures consistent workmanship, accurate fitting and reliable service for homeowners throughout these regions, maintaining strong visual detailing while supporting long-term window performance.
What Our Happy Customers Say
We have had a front door and side panel installed,Team Tim did a great job and were very professional and knowledgeable. Wouldn’t hesitate to recommend the company and this team to any one !
Simon and Brandon fitted our three windows in our garage > studio conversion and were great through the day. Arrived when they said they would, were very polite, respectful and pleasant people. Found answers to questions we didn’t realise about the installation and though we haven’t yet finished the project the windows are a very exciting and big step forward for us. Would recommend this company and this team without hesitation. Thank you!
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
Excellent service from a local independent company. Highly recommend.
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.
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
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
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
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.
Meet Our Team
Our team at Bowalker includes highly skilled astragal bar installers who deliver precise installations with careful attention to detail. Every installer works fully in-house, ensuring consistent workmanship, accountability and a smooth process from consultation through to completion.
Zack Newman
Director
Anthony Bowyer
Senior Surveyor
Dean Lloyd
Operations Manager
Angela Georgant
Financial Controller
Jack Harsford
Installer
Leon Prichard
Installer
Tim Cooper
Installer
Lloyd Walker
Installer
Tim Fraser
Installer
Brandon Bowyer
Installer
Zack Newman
Director
Anthony Bowyer
Senior Surveyor
Dean Lloyd
Operations Manager
Angela Georgant
Financial Controller
Jack Harsford
Installer
Leon Prichard
Installer
Tim Cooper
Installer
Lloyd Walker
Installer
Tim Fraser
Installer
Brandon Bowyer
Installer
See Our Work In Action
- Doors
- Rooflight
- Doors
- Windows
Ready To Get Started With Astragal Bar Installation at Bowalker?
Installing astragal bars improves your window’s visual structure, enhances traditional detailing and adds character while retaining existing glazing systems. Bowalker Windows Limited provides a complete, hassle-free installation service with a fully in-house team of installers, precision-fitted astragal bars 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 astragal bar installation team manages every stage with precision, ensuring each bar is aligned correctly for a consistent appearance, durable performance, and authentic heritage-style detailing.
Enhance the comfort, style, and energy efficiency of your home with Bowalker Astragal Bar Windows
Frequently Asked Questions
What Are Astragal Bars?
Astragal bars are decorative bars applied to the glazing surface, often combined with internal glazing details, to recreate the appearance of traditional divided-light windows. Unlike traditional individual glass panes, astragal bars are applied to the internal and external glazing surfaces to create the visual effect of multiple smaller panes within a single insulated glass unit. They are commonly used to replicate Georgian-style window designs whilst maintaining the thermal performance and durability of modern double glazing.
How long does an Astragal Bar installation take?
Astragal bar installation usually takes around 30 to 60 minutes per window, depending on the size, number of bars and complexity of the pattern. Larger windows or bespoke designs may require additional fitting time to ensure accurate alignment. Our in-house installers complete each installation carefully to achieve a consistent divided-light appearance whilst maintaining the quality of the existing glazing system.
How Do You Clean Astragal Bar Windows?
Clean windows with astragal bars using warm water, a mild detergent and a soft cloth to remove dirt from both the glass and decorative bars. Avoid abrasive cleaning products that may damage the bar finish or glazing surface. Pay particular attention to the corners around the bars where dust can collect, and regularly check that the bars remain secure and clean.
How Do You Choose the Right Astragal Bar Windows for Your Home?
The right astragal bars depend on your property’s architectural style, window design and preferred appearance. Traditional six-over-six and nine-pane layouts suit Georgian and heritage properties, whilst simpler patterns may complement modern homes. During your consultation, we assess your existing windows and recommend astragal bar layouts that match the glazing proportions, frame style and overall character of the property.
What Astragal Bar Window Design Ideas Should You Consider for Your Home?
Six-over-six Georgian grids, four-pane square layouts, slim vertical divisions and bespoke patterns designed to match existing windows give homeowners a wide range of astragal bar design options to consider. These can be applied across sash, casement, bay and fixed windows to create consistent period detailing throughout the property. Frame colour, glazing finish and bar placement should all be selected together to achieve a balanced appearance that suits the home’s architectural style.
What Guarantee Do You Provide on Astragal Bar Installation?
Bowalker provides a 10-year insurance-backed guarantee on qualifying installation work completed by our team. Our guarantee provides confidence in workmanship quality and installation standards. Where window replacement or glazing work falls within FENSA requirements, the relevant certification is provided after completion.