London Sash Windows

Alaskan Sash Windows (otherwise known as London Sash Windows) specialise in the installation of outstanding double glazed sash windows that are at the very forefront of innovation, customisation and heightened performance making these the leaders in the windows market.

We offer numerous styles of sash window and a full suite of customisable features. Whether you are looking for a traditional Georgian sash window, Edwardian sash window or a Victorian sash window style, we will have the perfect option for your home.

These beautiful sliding sash windows in London are available to homeowners in and around Fulham, Southfields, Putney, Croydon, StreathamEarlsfield, Tooting, Wandsworth, Balham, Clapham, Wimbledon, Morden, Battersea and the surrounding London areas.

If you are looking to replace sliding sash windows in london with new premium uPVC sliding sash windows, get your free online quote with our sash window price calculator. And also you can get upvc windows quote for free.

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How Much Do uPVC Sash Style Windows Cost?

Our team have created a sliding sash window price guide for all of your replacement sash window prices in London.

You can view our sash window price guide for more information and details of what furniture you can add. Our guide prices will help you to plan your London vertical sliders renovations and give you more inspiration for designs you never knew you could have.

We offer a free online quoting service as standard, which includes your sash window installation costs. Choose your product to get sliding sash window quote.

Read Our Price Guide

  • Perfect professionalism from first point of contact to cleaning up after work. Very consistent and thorough in communication. Prices are upfront and fair and most importantly - finished product is perfect. So happy I found them on Checkatrade and decided to solicit a quotation from them. Local London shops and nationwide leaders didn't measure up!

    Customer, Dulwich, London
  • Three workmen carried the work out in just two days, friendly hard working. Douglas and Alastair very friendly and helpful salesmen - never pushy. Great family business - reliable and efficient from start to end.

    Mr Jeeves, Croydon
  • 6 sets of new sash windows and French doors supplied and installed.

    Customer In London
  • Replacement of old sash windows.

    From our initial meeting with Douglas through to completion of the job by Mick and Terry all aspects of dealing with Alaskan Windows have been excellent. Helped find a solution to a difficult to fit kitchen window. Great quality/value for money plus service/response to any questions raised during quoting. All people that we engaged with, including office staff, take a pride in doing a good job which shows in the end results. Highly recommended.

    Customer in Streatham, London
  • Supply and fit new UPVC sash double glazing.

    Very good from initial contract to completion.

    Customer in Wallington
  • Prompt, Professional, Nice

    Replaced two wooden sash windows with PVC windows. Agreed a very reasonable rate compared to after quotes. Time schedule given was adhered to. Feedback given by their office staff whole way through process. Nice guys came to fit windows. They were efficient and left no mess at all!

    Ailish, London
  • AW installed secondary glazing for my box sash front windows, to schedule and on budget. The product uses acoustic glass and works very well to deaden noise from a busy road; the latch is simple to operate so that the front windows can be opened when required; and it's unobtrusive inside and out. They gave me a six week lead-in time and kept me informed by e-mail. The installers arrived on the day on time at 8 a.m. and completed the work in 90 minutes. Service was efficient and professional throughout from the first meeting with Doug the sales rep through to the installation. I didn't obtain alternative quotes but theirs seemed good value and matched my expectations. Overall it has been a smooth and stress-free experience and I would not hasten to recommend this excellent south-west London firm

    Mr Wright, London
  • Happy to recommend Alaskan to anyone looking to replace windows or for out a home - they’ve done a great job of replacing our 100yo original sash windows with a very elegant set of uPvc sash units. We were recommended Alaskan in the first place and they’ve been a pleasure to deal with. Michael firstly, with his understanding approach as we were looking at options. Nikki in the office who was always prompt to reply to our questions - and we had a few! And then Tony, who did a brilliant job with the install and finish. Very pleased with the Alaskan team, their products and service and have already recommended to neighbours.

Sash Windows Exquisite Design

Our range of sash window styles in London offers exquisite design. They will add character and charm to any London home, giving your property a chic appearance. You can tailor your vertical sliders to suit your tastes and property style. The combination of options we offer our London customers is extensive, giving you a truly bespoke look. Choose from various colours and finishes to customise your profiles to your personal tastes and architecture.

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 Georgian Sash Windows

For authentic period allure, our replica uPVC Georgian vertical sliders combine classic aesthetics with contemporary benefits. These double glazed windows with authentic Georgian bars will create a timeless appearance for your property that you can enjoy year after year. Improve your property’s aesthetics with the Georgian style profile. Get in contact today for more information and a free no-obligation quote.

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Replacement Sash Windows

We know that in some areas, particularly conservation areas, your replacement sash windows have to meet exact criteria and be in keeping with their surroundings. Our range of replacement sash windows has been meticulously designed to replicate traditional vertical sliders, making them ideal for listed homes. Move past that red tape with ease when choosing us as your installation company in London.

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10 Year Guarantee

We offer a 10 year manufacturer’s guarantee on all our windows. We are confident in the outstanding quality and performance of our double glazed profiles will only enhance your London property. That’s why we share our confidence with you. It’s important to us that we supply market-leading vertical sliders, that will last the test of time and will continue to look pristine year after year. Your satisfaction is the key to our success.

Browse Our Gallery

Find inspiration for sash windows by browsing our online gallery. We want you to see how incredible these windows are when you imagine them in your London home. Take all the time you need to view our range of double glazed vertical sliders.

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London Sash Windows

sash windows london

Why Choose London Sash Windows?

We are a family run company that delivers premium vertical sliding sash windows to customers around in and around London, including Fulham, Putney and Wandsworth. Our competitively priced products will be expertly installed by our team, improving your London home’s performance as well as beautifully complimenting the aesthetics with a traditional design.

We will guide you through the entire process, from initial discussions and quotes through to the installation. We will even give you tips and tricks to keep your vertical sliders looking as good as they did on day one. However, the materials we use ensure that they are low maintenance, meaning London homeowners will not have to spend ages on upkeep. All you have to do is wipe down your profiles with a damp cloth, and they will look as good as new.

Get in contact today to find out more information about our uPVC sliding sash windows as well as other services we offer as a specialist double glazing installer in London.

We are happy to answer any questions you may have about our replacement sash windows quotes and other products we provide in London.

Contact Us

Should you have any questions, or need any guidance, when it comes to choosing your sash windows, please do not hesitate to contact us. We have a friendly and helpful team on hand waiting to assist you. There’s no hard sell from our dedicated customer service team, as we thrive on quality and not quantity. We want you to have a relaxed experience that epitomises excellence.

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uPVC Sliding Sash Windows Prices in London

Our range of uPVC vertical sliders are high end and incorporate the very latest advances in double glazing, however, our prices are still competitive. We provide a free online quote service where you can get tailored London sash windows prices.

Our online quote calculator is efficient and simple to use. Just enter your measurements and design choices and our intelligent calculator will provide you with a bespoke price within a few moments.

You can choose from a range of beautiful Sash Window profile colours, as well as decorative glass for your new window meaning you can tailor your replacement sash windows to your property in London or Sutton.

We, at Alaskan Sash, have so much more to offer. From astragal bars to wall insulation, there is an addition for every customer to make their double glazing unique.

You can also get a mobile quote here.

Areas We Cover

Here at London Sash Windows, we provide all of our sliding sash windows and other products and service to homes throughout London. The areas we cover include Fulham, Southfields, Putney, Wandsworth, Balham, Clapham, Earlsfield, Wimbledon, Morden and South West London.


How Does a Sash Window Work?

A sliding sash window is the only type of sash window. Most sash windows are double hung, allowing both the upper and lower sashes to be opened up and down on tracks. The tilt and turn function comes with this window as a way to provide easy and accessible cleaning known as a “Tilt and Easy function”.

How Long Does it Take to Replace a Sash Window?

Once the sash window for your property has been delivered, the installation is quick and simple. Depending on the size, it could take anything from a few hours to a full day.

How Do I Clean uPVC Sash Windows?

The tilt and easy clean function allows you to easily open up the sash windows to clean both the interior and exterior of the uPVC frame. To clean your windows, simply wipe down with a damp cloth.

What Styles of Sash Windows are there?

There are 3 main types of sash windows available on the UK market. The styles include Georgian sash windows, Edwardian sash windows and Victorian sash windows.

Should I Repair or Replace Sash Windows?

You can repair sash windows but you should replace them. You may notice that over time, you’ll spend more money on repairing the window, making it a less cost effective option. Replacing an entire window will be the most cost effective solution, as our sash windows have been carefully crafted to stand the test of time and are competitively priced. The modern design will not rot, warp, fade or crack, meaning you can enjoy your new windows for years, without the need to repair or replace them.

Why Choose uPVC Sash Windows?

uPVC sash windows are the superior choice over timber sash windows if you are looking for a low maintenance and long lasting window. They offer characteristic appearances that will add traditional charm to any property and an impressive range of performance benefits such as improved security, durability, insulation, and weatherproofing.