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Sash Windows

Sash Windows

Add style and performance to your home in equal measure with our sash windows. Produced in our Clevedon factory, we have showrooms in Bristol and across the South East and South West. Start your free online quote for sash windows today!

Stylish Sash Windows

Get Your Free Quote

Maintain your home’s traditional charm while enjoying all the benefits that come with a modern sliding sash window. Sash windows have been a stylish window choice in the UK for centuries, but single glazed, timber-framed windows simply don’t perform in comparison to modern technology.

Sash windows have remained popular because of their excellent ventilation and aesthetic appeal. Now you don’t have to sacrifice any of those elements to have modern, high-performance windows that give you light, ventilation and ease of use.

Get a FREE Window Quote

Select your favourite designs, input your specifications, and we’ll send you a FREE window quote based on your design preferences.

Available Online, In-Store or At Home

Experience the freedom of obtaining the products you desire, tailored to your preferences. Our dedicated team is always available to assist you whenever you require assistance. Your satisfaction is our priority.

Decades of Experience

Britannia is proud to have been providing the highest quality uPVC windows since 1982. With over four decades of experience, our team has the knowledge and the skills to provide the very best service. You’re in safe hands when you choose us for your new sash windows.

Family Run Business

Britannia started as a family run business back in 1982, and it's still the case to this day! We believe this sets us apart from the competition. We value our service and your time by putting the customer first and helping to give the smoothest experience. For a personal touch, look no further.

10 Year Guarantee

We have full confidence in the installation of our sash windows. In fact, it's for this reason we go the extra mile. With all of our fittings, we include a 10 year guarantee. This reflects both our confidence in our work and our dedication to homeowners. Enjoy at least a decade without hassle.

Made to Measure

A one size fits all process doesn’t fit in with what we believe. After all, every homeowner’s house will be unique and distinctive to their personality and tastes. By making all of our double glazing, including our sash windows in house, we can tailor them to reflect your distinct choices.

Accredited Windows

While we stand by the quality of our double glazed windows and our service, you don’t have to just take our word for it! We have a range of accreditations, including Secured by Design and Certass. This just goes to show the inherent quality of the products we produce here at Britannia Windows.

Dedicated Showrooms

Our website showcases all of the stylish and high performance windows we supply and install. However, nothing quite beats seeing them in person. If you’d like to take an up close and personal look at our sash windows visit one of our showrooms in either Bristol, Clevedon or throughout cities in the South of England.

Customisation Options



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Smooth Operation Sash Windows

The easy gliding operating system means that opening and closing are smooth, while the upper and lower windows tilt inward for safe cleaning and ultimate ventilation. Robust design and aesthetically pleasing appearance, our vertical sliding sash windows bring out the character of any home. With near-invisible joints and the grace of the run-through sash horn.

While sash windows harken back to a more traditional style, their modern construction gives a variety of benefits. Being made of high quality uPVC, these windows will withstand the effects of weathering. Unlike traditional wood and materials, modern uPVC doesn’t rot, warp or swell in the same way. This means that your new uPVC windows will withstand even the harshest of weather.

upvc windows

Energy Efficient Double Glazing

Double glazed uPVC windows, such as our sash windows, are a great addition to the modern home. With their modern design, they’ll help you create an energy efficient environment. For you as a homeowner, that will bring a couple of key benefits. With greater energy efficiency, you could experience less temperature fluctuations through the months. This could even mean a reduction in energy bills!

Security is a top concern for us here at Britannia windows. We want to make sure that your uPVC windows keep your home truly safe and secure. Modern uPVC profiles such as those used in our sash windows are impact resistant. Combined with our double glazing and multi point locking systems, you’ll enjoy a secure environment. You and your family are in safe hands with Britannia.

Frequently Asked Questions

How does a window sash work?

Consisting of two or more panels, a sash window works by having at least one panel that can move vertically up or down. If your window is single hung this means that just one panel moves.

Do you have a showroom?

Even better, we have a few! We have a range of showrooms throughout the south of England where you can see our sash windows in person. Visit us in Bristol, Clevedon or across cities in the South East and South West today!

Where are your sash windows made?

We manufacture all of our sash windows from our base in Clevedon. By manufacturing in house, we can offer the highest quality as well as a range of customisation options.

How secure are they?

They are a brilliant way to let in light and air, ensuring your room has a fresh feel to it. Our double glazed casement windows are also good insulators, as the compression seal technology fits snugly to the window sash, creating a tight seal which prevents cold air from getting in and warm air escaping. This helps you to save on your energy bills.

Happy Customers

Lady drinks coffee and watching through windows and doors

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Credit is subject to status and affordability. Terms and conditions apply. Authorised and regulated by the Financial Conduct Authority. Network Britannia Windows Limited FCA Register no. 738269 trading as Britannia Windows Bognor, Britannia Windows Bristol, Britannia Windows Eastleigh is an appointed representative of Ffenestri Limited FCA Register no. 716352 Kimberley Road, Clevedon, Somerset, BS21 6QJ is a credit broker, not the lender. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC. Authorised and Regulated by the Financial Conduct Authority.