Edwardian Windows
Authentic Period Style with Modern Double Glazing Performance
Supply Only | Supply & Fit
Edwardian windows are one of the defining architectural features of early twentieth-century British homes. Known for their balanced proportions, larger glass panes, and elegant simplicity, Edwardian style windows sit perfectly between the decorative Victorian era and later modern designs.
At Colin’s Sash Windows, we manufacture and supply bespoke Edwardian windows designed to preserve original character while delivering modern comfort, energy efficiency, and long-term reliability. Whether you require Edwardian sash windows, casement windows, or bay windows, each system is carefully produced to match traditional proportions while incorporating discreet modern performance upgrades.
We offer UK-wide supply only as well as supply and installation in selected areas, with typical manufacturing lead times of approximately 2–3 weeks. Every order includes detailed approval drawings before manufacturing begins, ensuring complete confidence before production.
What Are Edwardian Windows?
Edwardian windows originate from the architectural period between 1901 and 1914. Homes built during this time were designed to feel brighter and more spacious than earlier Victorian properties, which is reflected in wider openings and increased natural light.
Our uPVC windows are manufactured using modern multi-chambered profiles and paired with double glazing, allowing them to achieve excellent insulation, draught reduction, and long service life.
✔️ Larger panes of glass to maximise daylight.
✔️ Symmetrical layouts across property façades
✔️ Simpler detailing compared to Victorian windows.
✔️ Strong emphasis on proportion and balance.
The most recognisable configuration is the six over two sash design, where the upper sash contains smaller panes and the lower sash features larger clear glass panels. Today, many homeowners upgrade to double glazed Edwardian windows, improving insulation while maintaining authentic appearance.
Our modern Edwardian Style Windows Range
Our Edwardian style windows online are available in different styles including Timber & uPVC sash windows, casement windows, flush casement windows, Ecoslide uPVC vertical sliding sash windows, mechanically jointed uPVC sash windows each offering distinct advantages in performance, design flexibility, and long-term maintenance.
Edwardian Sash Windows
Edwardian sash windows remain the most popular choice for period homes across the UK. These vertically sliding windows provide excellent ventilation while maintaining historical authenticity.
Common features include:
- Six over two or six over one glazing layouts
- Slim glazing bars for refined proportions
- Run-through sash horns
- Deep bottom rails reflecting traditional joinery
Modern double glazed Edwardian sash windows combine traditional appearance with improved thermal efficiency, enhanced security, and smooth operation, making them ideal for replacing original single-glazed units.
Edwardian Casement Windows
Edwardian casement windows are commonly used on rear elevations, extensions, and within bay structures. Side-hung openings and fixed panes work together to maintain symmetry while offering flexibility.
Key characteristics include:
- Clean sightlines and wide openings
- Traditional handles and stays
- Period-correct glazing bar arrangements
- Compatibility with timber and uPVC systems
Casement designs allow homeowners to retain Edwardian character while benefiting from modern usability.
Edwardian Bay Windows
Edwardian bay windows are a defining feature of many properties from this era. Projecting outward from the façade, they increase internal space while allowing light to enter from multiple angles.
Typical Edwardian bay windows:
- Combine sash and fixed sections
- Maintain strict symmetry
- Follow consistent glazing bar layouts
Accurate surveying and bespoke manufacturing are essential when replacing Edwardian bay windows to maintain alignment and structural integrity.
Our Edwardian Windows
Based On Material
Choosing the right material depends on property requirements, maintenance preferences, and conservation considerations.
Timber Edwardian Windows
Timber remains the most authentic option and is often preferred in conservation areas. Modern engineered timber offers durability, excellent insulation, and the ability to repair or refurbish over time while maintaining traditional detailing.
uPVC Edwardian Windows
Our High-quality edwardian style upvc windows replicate timber aesthetics while offering low maintenance and strong thermal performance. Woodgrain finishes and slim profiles allow homeowners to achieve a traditional appearance with modern practicality.
Both timber and uPVC systems are available as double glazed Edwardian windows, improving comfort and reducing energy loss.
Glazing Options & Energy Efficiency
Original Edwardian windows were single glazed, resulting in significant heat loss. Modern glazing solutions provide improved performance without altering period aesthetics.
Available options include:
- Double glazing for improved insulation
- Slimline heritage double glazing
- Acoustic glass for noise reduction
- Laminated and safety glass where required
These upgrades help properties meet modern energy expectations while maintaining traditional design.
Edwardian Windows vs Victorian Windows
Although often confused, Edwardian and Victorian windows differ significantly.
Victorian windows are typically taller, narrower, and more ornate, with intricate glazing patterns. Edwardian windows are wider, cleaner in design, and allow significantly more natural light into living spaces.
Choosing the correct period style is particularly important when carrying out an Edwardian window replacement, especially within conservation areas where accurate detailing supports planning approval.
Edwardian Windows in Conservation Areas
Many Edwardian homes fall within conservation areas where replacement windows must closely match original designs. Accurate replication of glazing patterns, materials, and proportions is essential.
Modern slimline double glazing is now widely accepted in many heritage applications when designs faithfully reproduce original windows. Our approach focuses on achieving planning compliance while improving comfort and efficiency.
Edwardian Window Replacement
& Modern Upgrades
Many original windows suffer from draughts, condensation, and poor insulation due to ageing materials and single glazing. A professional Edwardian window replacement allows homeowners to retain period appearance while dramatically improving performance.
Our replacement Edwardian windows are manufactured to match original proportions and are available in:
Upgrading improves thermal efficiency, security, and everyday comfort while preserving architectural character.
Colours, Finishes & Hardware Options
Our Edwardian sash, casement, and uPVC window ranges come in an extensive selection of colours and surface finishes, designed to complement both classic architecture and contemporary homes.
Frequently chosen shades include White, Anthracite Grey, and Chartwell Green, along with realistic woodgrain effects such as oak and rosewood. Dual colour foil options are also available, allowing different tones on the interior and exterior.
You can further personalise your windows with a choice of hardware finishes and styles, including lift hooks, pole eyes, secure locking systems, tilt functions, travel restrictors, D handles, and sash knobs, ensuring the final look aligns with your design preferences.
Edwardian uPVC Sash Windows Colors Options
Edwardian Casement Windows Colors Options
Edwardian Windows
BFRC Energy Rating Comparison
The British Fenestration Rating Council (BFRC) evaluates window performance using a scale that ranges from A++ to G.
Our double glazed uPVC windows achieve strong performance scores and are independently assessed by the BFRC before receiving their official rating. This system helps you compare energy efficiency levels when planning to upgrade or install new windows. You can review the window energy ratings below.
| Window Material | Typical BFRC Rating* | Typical U-Value (W/m²K) | Performance Notes |
|---|---|---|---|
| uPVC | A – A+ | ≈ 1.2 – 1.4 | Multi-chambered uPVC profiles with Argon-filled double glazing and Low-E glass usually deliver the best overall insulation and energy efficiency. |
| Timber (Wooden) | B – A | ≈ 1.3 – 1.5 | Timber is naturally insulating and ideal for conservation and period properties. Performance depends on timber thickness, glazing specification and external paint or stain finish. |
*Typical ratings shown for modern double glazed specifications. Exact BFRC ratings and U-values depend on final glass, spacer and frame configuration chosen for your project.
Choosing the Right Edwardian Windows for Your Home
When selecting Edwardian style windows, homeowners typically consider:
Original window configuration (sash, casement, or bay)
Conservation or planning requirements
Timber or uPVC material preference
Double glazing performance needs
Supply only or installation service
We provide detailed approval drawings before manufacture, ensuring every window is correct before production begins.
To Get Value For Money
Choose Colin's Sash Windows
10 Years Gaurantee
All our modern uPVC windows comes with the 10 years on parts and labour.
Made in Britain
We supply only made in Britain uPVC windows that are manufactured in UK.
We Match Your Price
If you have got a cheaper price from any other supplier then we are ready to match the price.
- Specialist knowledge of Edwardian architecture
- Bespoke manufacturing to original proportions
- Timber and uPVC Edwardian window options
- UK-wide supply or supply & installation
- Fast 2–3 week manufacturing lead time
- Approval drawings before production
Every Edwardian house window is designed to enhance your home while protecting its architectural integrity.
Calculate the Cost of Double Glazed Edwardian Windows Online
Get a fast, accurate estimate traditional Edwardian style windows in just 60 seconds using our double glazing cost calculator. No sign-up, no obligation – simply enter your details and see your tailored price.
Benefits Of Buying
Edwardian Windows Online From Us
Choosing edwardian double glazed windows from us means more than simply upgrading your frames, it means gaining the extra value and service that comes with Colin’s Sash Windows. We focus on building genuine customer confidence, and the added advantages included with our double glazing help distinguish us from other providers.
Energy Efficiency
Our uPVC windows are built with Low E coated glazing, Argon gas filled units, and warm edge spacer bars, all designed to enhance thermal performance and minimise heat transfer. With these components combined, most configurations deliver U values ranging from 1.2 to 1.4 W/m²K, helping maintain a comfortable interior temperature while reducing energy bills when compared with single glazed alternatives.
Security
Our uPVC window units are constructed with durable double glazed panes and reinforced frames to help deter forced access. Multi point locking systems come as standard, and PAS 24 compliant hardware can be specified for new build applications, providing dependable, long lasting protection for your property.
Condensation Control
The warmer interior glass surface produced by Low E coatings, Argon filled cavities, and warm edge spacer bars helps limit the formation of condensation inside the room. This can reduce the risk of mould growth, damp issues, and moisture related damage, while also enhancing everyday comfort, particularly in older homes.
Acoustic Insulation
Our glazing systems are designed to cut outside noise by roughly 20 to 35 decibels, depending on the specification selected. Choosing laminated or asymmetric glass can enhance acoustic performance further, making them ideal for properties in high traffic or urban areas and helping create a calmer, more comfortable indoor setting.
Ventilation Integration
Our windows come fitted with trickle vents where needed, with optional over-frame vent hoods available for sash windows. Casement models include secure night vent settings, allowing airflow while maintaining safety. All ventilation dimensions are designed to meet Document F regulations.
Unmatched Guarantees
All our double glazed windows are backed by extensive guarantees for lasting peace of mind. Each installation includes coverage for both workmanship and products, ensuring your windows continue to perform reliably and protecting your investment for years to come.
Accreditations
Our windows hold certifications from over a dozen respected UK bodies covering quality, safety, and performance. These endorsements demonstrate compliance with rigorous national standards and offer confidence that each unit is crafted and fitted to the highest level of excellence.
Largest Double Glazing UK Suppliers
Colin’s Sash Windows is one of the UK’s leading suppliers of double glazed windows. Our size and experience enable us to provide consistent quality, dependable service, and competitive pricing. Homeowners enjoy the reassurance of solutions trusted across thousands of properties nationwide.
Real Images Of Our
Edwardian Windows In UK Homes
Edwardian Windows Buying Guides
Areas We Deliver
We offer supply and installation services across most areas of the UK. Submit your postcode and project details to arrange survey dates and check lead times. Our uPVC window styles typically have some of the shortest lead times, around 2 to 3 weeks.
Delivery details for our uPVC sash and casement windows are shown in the image below. Areas highlighted in green have a delivery fee of £36, yellow areas start from £120—please contact our sales team for confirmation in these zones—and red areas are currently outside our delivery coverage.
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Request a Quote for Edwardian Windows
If you are restoring, upgrading, or planning an Edwardian window replacement, our team is here to help. We provide expert guidance, approval drawings before manufacture, and fully compliant solutions across the UK.
Contact Colin’s Sash Windows today to request a quotation and start planning your Edwardian window project.
Get in Touch At Once!
Feel free to call us on 01525 552131. Our friendly sales advisors will guide you through the ordering process and help you with anything regarding double glazed windows. Alternatively, don’t hesitate to write us via the contact form or directly to our email address sales@colinssashwindows.co.uk. Don’t waste your time and take advantage of the finest quotes throughout the UK and Ireland.
