What are Sash Windows?
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Wite uPVC tilt and slide sash window exterior -
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White wooden sliding sash windows at front of house
Sash windows are made up of two glazed panels called ‘sashes’ and are either single or double-hung. Moving up and down on a vertical slider, single-hung sashes have only one moving panel, while double-hung means both sashes move. They are very common window on Victorian, Edwardian and Georgian properties.
Sash Window Materials
Choose between double glazed uPVC or wooden sash windows. Create the perfect look from a range of colour and design options.
Sash Window Styles
Sash windows were a staple in Georgian and Victorian homes. Customise our modern double glazed range to mimic classic design styles.
Victorian Sash Windows
Transform your Victorian sash windows with our energy-efficient, contemporary replacements. We can help replicate period details like central bars and coloured glass.
Georgian Sash Windows
Refresh the windows of your Georgian home with our modern sash options. Recreate the charm of the Georgian chequerboard design with glazing bars or leaded designs.
Edwardian Sash Windows
Retain the period look of your Edwardian home with like for like Edwardian sash window replacements. Choose from a wide range of decorative features to evoke timeless Edwardian design.
Sash Bay Windows
Create a beautiful feature with sash bay windows, a classic look to enhance any property. Choose between uPVC or traditional wood in a wide range of colours and finishes to suit your style.
Reasons to Choose Sash Windows
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Warmer Home, Lower Bills
Double glazed sash windows help keep the heat in your home. Thermal treatments stop warm air escaping through frames, and high-performance pile weather seals help reduce draughts.
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Perfect for Conservation Areas
Our Elite uPVC and Timber sash windows are easily tailored for homes in conservation areas. Customise yours with features like Georgian bars, decorative horns and heritage-style locks and handles.
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Open with Ease
Thanks to a perfectly counterbalanced system of hidden runners and springs, opening and closing sliding sash windows is smooth and easy. We also offer easy-opening modern cord and weight box sashes with timber.
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Modern Security Features
Key-operated cam locks and limit stops are standard on our sliding sash windows. We also have reinforced sashes across our range and Security bars or blocks on our uPVC sash windows.
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Add Value to Your Home
Modern double-glazed sash windows increase the energy performance and look of your home, making them a good long-term investment.
Compare Sash Window Energy Ratings
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10-year Guarantee
A 10-year parts and labour guarantee is included in your Anglian double glazing price.
Made in Britain
Our products are made from start to finish in a British factory by skilled craftspeople.
Price Match
If you find cheaper like for like uPVC windows elsewhere, we'll match the price.
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Sash Window Details
Our design specialists are ready to help you craft your ideal sash windows. Whether you opt for uPVC or timber sash windows, tailor your windows to the style and look you want. From colours all the way down to handles and locks, you have control over so many options.
Sash Window Colours
Create sash windows with classic colours to suit your period property or choose bold colours to bring new life to any home. Our uPVC sash windows come in 8 colours with either solid or woodgrain finishes. Our timber sash windows come in 9 standard colours or a huge choice of over 200 RAL colours.
Sash Window Glass
Add more privacy or decorative flourish to your sash windows with our range of decorative glazing. Create a stunning feature bay sash window with diamond leaded designs or elegant brilliant cut designs. Add obscure glass to bathroom windows or bespoke coloured glass designs for your period home.
Sash Window Accessories
Complete the look of your sash windows with quality handles, locks, sash pulls, knobs and horns. Available in white, chrome or gold, you'll find the perfect finish for your uPVC or wooden sash windows. Create a more traditional feel with gold locks and lifts or choose chrome fixtures for a more modern feel.
Box Sash and Sliding Sash Windows
With every window type, there are sometimes conflicting terms or industry jargon to wade through. To help cut through any confusion, here are some proper explanations of Box Sash Windows and Sliding Sash Windows.
Box Sash Windows
A box sash window, also known as a hung sash, is a sash window with a traditional opening mechanism used. Hidden down the sides of the timber window frames, the 'box' contains a cord and weight pulley system. This mechanism keeps the sashes in place as well as making opening and closing smooth and easy.
Sliding Sash Windows
A sliding sash window is a simpler and more modern system. Instead of weights and pulleys, the sliding sash window uses tracks and springs along the sides of the window. These are often found in uPVC sash windows, but still provide that sleek, elegant look that suits traditional or modern properties.
Sash Windows Gallery
Working with the Best Industry Bodies to Install the Best Sash Windows
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BFRC
The British Fenestration Rating Council (BFRC) verifies the energy performance of windows and doors in the UK. Installing BFRC rated energy-efficient windows will help save money on your energy bills.
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BSI Kitemark
The BSI Kitemark™ is one of the most recognised symbols of high quality products and safety standards. Anglian has 10 Kitemark accreditations, with six for windows alone.
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BSEN12608:2003
British Standard BSEN12608:2003 Licence No KM 12876 - For colour fastness, impact resistance and corner strength uPVC frames.
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FENSA
The Fenestration Self-Assessment Scheme (FENSA) ensures replacement window and door installations comply with building regulations for England and Wales. You receive a FENSA certificate to keep as proof of compliance.
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GGF
Anglian is a leading member of the Glass and Glazing Federation (GGF). The GGF is the most influential Trade Federation in the industry, recognised by government for their in-house technical expertise, which helps influence key legislation within our sector.
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Made in Britain
The ‘Made in Britain’ marque on all our products means they are made from start to finish in a British factory by British craftspeople.
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Recovinyl Plus
Recovinyl is an initiative advancing the sustainable development of the European PVC industry by improving production processes, minimise emissions, develop recycling technology and boost the collection and recycling of waste.
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TrustMark
TrustMark is a not-for-profit organisation operating a quality mark framework in the repair, maintenance and improvement sector. Registration with Trustmark demonstrates commitment to customer service, high standards and continual improvement.
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Decide if Sash Windows are Right for your Home
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Do new Windows Add Value to your Home?
Learn why it's worth considering new double or triple-glazed windows to attract homebuyers.
Made to Measure Windows
Discover how we help you create bespoke windows that are just right for your space, and your home.
Choosing the Right Window Material & Colour
Read our guide on how to choose between uPVC, wood or aluminium for your new windows.
Window Energy Efficiency
Learn the difference between an A++ and an E rated window and why Anglian install A-rated as standard.
Request a Brochure
Browse the full range of style options and colours in our free doors brochure.
- Explore the full range of handles, knockers and more
- See stable door and side panel options
- View all glass options and door finishes
Sash Windows FAQs
Your questions on sash windows answered by us.
It is not possible to double glaze existing single glazed sash windows. You can upgrade your existing single glazed sliding sash windows to Anglian double glazed sash windows. If you want better energy performance then secondary glazing is a good option. Secondary glazing fits behind your existing sash windows, providing extra warmth and sound insulation.
The best way to insulate existing sash windows is with secondary glazing. However, new double glazed A-rated uPVC sash windows may be a better option in the long run. Replacing tired or damaged windows helps prevent damp and helps improves energy efficiency. New windows are great at retaining heat, improving security and upgrading the look of your home.
Yes you can to an extent, and the best way to reduce sound coming through existing sash windows is with secondary glazing. However, replacing your windows, especially if you are replacing single glazed windows, can make a huge difference too. The large gap between existing windows and secondary glazing gives you a more effective barrier against outside noise.
The cost of a new sash window can vary greatly depending on its size, style, and your choice of material. Timber sash windows will generally cost more than uPVC sash windows, and larger sizes will also increase the price. Get in touch with Anglian for a free, no obligation quote to get an accurate price for your new sash windows.
Yes, high-quality sash windows can add value to a property, transforming the look of your home and bringing period features back to life. A lot of period homes had their original windows ripped out in the 1980s and 1990s. These were often casement windows replacing sash, and the look just isn't the same. There is a huge trend right now for restoring Victorian and Edwardian properties to their former glory. Reinstating sash windows is a great way to bring that period charm back and add curb appeal.
Planning permission isn’t normally required for installing sash windows, but in some cases you might need it. If your home is listed, in a conservation area then you will probably need planning permission. Planning rules often require replacing windows on period homes like for like. For most period properties, this means you have to get timber sash windows in the same design as the originals. You may also need planning permission if you're adding a brand new window to your home.
Modern sash windows can last for many decades, so long as they’re well-maintained. uPVC is durable and weather-resistant at a cost-effective price, lasting for 20 to 30 years. Well-made and well-maintained timber sash windows could last twice as long or even more, lasting upwards of 60 years.
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Our Accreditations and Licenses
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The British Board of Agrement provides certification on the quality of our products. -
The British Fenestration Ratings Council is the UK’s national system for rating energy efficient windows. -
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The Fenestration Self-Assessment Scheme ensures window installers comply with buildings regulations in England & Wales. -
Anglian is a leading member of the Glass and Glazing Federation (GGF). -
Certifies products made from start to finish in a British factory by British craftspeople. -
PVC Industry initiative to improve manufacturing, minimise emissions and develop recycling practices -
TrustMark is a government endorsed not-for-profit organisation that operates through more than 30 scheme operators.