Call Osborn Glass, London Double Glazing 020 8683 8406
Windows, doors & conservatories - London, Surrey, Kent & surrounding areas
London’s leading sash window supplier
Replacing the windows of your home is an immediate way to add value and increase security. With a wide range of uPVC sash windows, as well as timber, aluminium, and heritage options, we’ll help you find the perfect new windows for your unique property.
What are sash windows?
A sash window – traditionally known as a box sash window – is comprised of two framed window sashes which are positioned one in front of the other. This allows them to move up or down smoothly, maximising the air flow into your home and keeping in the heat when closed. This motion is also why they are often referred to as sliding sash windows.
Sash windows are a popular choice for properties in conservation areas, thanks to their timeless aesthetic and historical appeal. In fact, the first box sash windows in the UK date back to the 1670s, and they’ve been used in all kinds of homes in the years since.
Because of technological upgrades, sash windows are just as efficient as casement or bay and bow windows.
Why choose Osborn Glass for your new sash windows?
We’ve been the go-to glass and windows supplier for South London and the surrounding areas since 1966. In the almost six decades since then, we’ve helped homeowners and property developers to choose the perfect sash windows to complete their project; from uPVC sash frames for contemporary developments, to timber sash windows in historic properties.
We don’t just supply a wide range of sliding sash windows – our expert team will arrange a convenient time with you for our fitters to come and deliver and install your brand-new windows to the highest possible standards.
Email us today
Whether you’re looking for a quote, have a question, or anything else we can help with. Send us an email and we’ll aim to respond within 24 hours.
Osborn fitted some new bifold doors and a window for us. Very happy with the service received throughout the ordering process as well as the finished result. Special mention to the fitter who was very polite and helpful.
I am delighted with the UPVC windows that have replaced three 80-year-old wooden windows that were rotting. Osborn’s staff were particularly patient when I had to delay the installation and then made a minor change to the glazing. The installers were fast and efficient.
Call Osborn Glass, London Double Glazing 020 8683 8406
How much do sash windows cost?
We treat every project with a personal touch that places your requirements at the heart of what we do. This means that each order of sash windows is individually quoted based on design, material, and measurement specifications. In order to receive your personalised quote, reach out to our helpful team today.
Can sash windows be double glazed?
Absolutely! As well as looking the part, your new sash windows will help to insulate your home with double-glazing included on all new windows as standard. Double-glazed sash windows are also ideal for keeping noise pollution to a minimum.
ThermoVFlex technology can also be used in new-build, refurbishment, and conservation projects to benefit from low U-values while remaining cost-effective and practical. Speak to our friendly team to learn more about this option.
Timeless look, modern benefits
Sash windows are the perfect choice for upgrading your current windows, regardless of the age or location of your home. This is because they have a tested, reliable design that adds charm and security to your home.
Some of the benefits that come with choosing sliding sash windows include:
Lower energy bills. All of our sash windows come with A-rated energy efficiency, keeping the heat in and reducing condensation. In colder months, this means that you’ll require much less energy to heat your home – bringing down the cost of your household bills.
Improved security. Sash windows come with a range of security features that will keep your home secure, such as limit stops to monitor how far they can open. Their double-glazed design also makes the glass in your frames much harder to break than older, historic single-pane windows.
Complete customisation. All of our sash windows come in a wide range of colours and finishes, meaning that you could choose uPVC sash windows and still give them a woodgrain finish that replicates timber. The choices are limited only by your creativity!
Your sash window supplier, based in South London
We supply and install windows and doors from our South London showroom, which is open for visitors to get a sample of what we can bring to your property. Take a look at the areas that we serve, and if you’re unsure whether we can help you, reach out to us for a quick call to learn more.
Read our latest news, tips, and helpful guides…
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How To Prepare Your Windows For Winter
How to prepare your windows for winter As the cold months start to draw in, keeping your windows up to scratch is vital. Poor insulation or wear and tear can lead to draughts blowing into your home – driving up energy costs, and making it impossible to get comfortable as the temperature plummets. Rather than cranking up the heating and burning through money, here are some handy tips for preparing your windows for winter, to keep your home nice and cosy throughout the season. Maximise your window insulation Window insulation might sound like a big undertaking, but it doesn’t need...
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How to choose new windows for your home When replacing windows, it can be tricky to know which type is best for your home. There are lots of options to choose from, which can make glass and window replacement feel like a much more complicated process than it needs to. As South London’s experts in everything from double glazing to conservation properties, we’re here to help. Let’s unpack the different kinds of window that you may choose, and why each of them has unique benefits that suit a wide range of properties. Considerations for picking the type of window for...
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