Sliding Sash Windows in London

Our beautiful sliding sash windows are a showcase of what London has to offer, with intrinsic style and elegant functionality captivating the essence of the city.

We adopt a period design that is reminiscent of nineteenth-century London, which is complemented by an innovative profile to construct beautiful, high-performance sliding sash windows.

Our uPVC sliding sash windows can easily replicate the classic style of the original wooden sash windows with a range of wood grain foils.

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  • 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.

Impressive Aesthetics

Sliding sash windows create an impressive feature for any home with their traditional yet flexible design. They offer stunning sightlines with beautiful glazed areas, accommodating a vertical sliding sash style which is easy on the eye and easy to operate design.

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 Bespoke Design

We offer a myriad of styles to find a perfect match from for your property in London. We offer replica period furniture including Georgian bars and ornate handles. You have the choice of a broad palette of colour finishes to create the whole combination of fantastic finishes.

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Versatile Design

The beautiful appeal of sliding sash windows has stood the test of time. Now you can have windows in that unique design that will last you long into the future, due to their durable uPVC profile. Have the benefits of modern double glazing with the charm of classic sliding sash windows.

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High Security Sliding Sash Windows

These are the epitome of security, having met the PAS24 testing standards. We ensure homes in London are safe and protected living environments when our sliding sash windows are installed.

We offer a full range of high-quality hardware to secure your sliding sash windows, including various impressive multipoint lock designs, high-performance handles, and highly-secure hinges.

Our sliding sash windows are fitted with high-security locking mechanisms that exceed the stringent standards of Secured by Design, ensuring your home is safely locked when you are out or asleep.

Locking your windows is vastly important as intruders will often target windows, therefore we fit every sliding sash window with these locks that are embedded into the profile to prevent any leverage.


Sliding Sash Window London


Innovative Technologies

Our sliding sash windows are fitted with brand new spiral balances. This innovative design is able to competently carry the full weight of the sash. This results is a smooth, gliding feel when opening and closing, for effortless operation.

We have replaced the original pulley system of traditional sliding sash windows as this was often a cause of issues that resulted in the sashes becoming difficult to manoeuvre and operate. The functionality has now been vastly improved. 

Our windows not only protect your home from potential intruders and the weather, the slim sightlines also provide great views. They have low-level PCE gaskets to open up views whilst keeping your home dry and thermally-efficient.

Our thermally-broken multi-chambered profiles are kept warm and comfortable throughout the year. In fact, as they are a low conductor of heat, they help retain heat within the home. Our high performance sliding sash windows achieve fantastic energy ratings of ‘A’.

We offer a tilt function on our innovative sliding sash windows, which feature a built in pivot bar. This clever feature allows extra ventilation without the necessity to compromise on security. It also provides easier access from the inside for cleaning.

Our windows are extremely low maintenance, and will require nothing more than an occasional wipe down with a damp cloth before looking brand new again. Have the look that you want last a long time, without the need for repainting.

Our sliding sash windows will never warp, rot, fade or discolour because of the intelligent design of our uPVC profiles. You will find it is both cost-effective and time-saving investing in sliding sash windows from Alaskan Sash Windows.


Sliding Sash Windows London

Stylish Sash Windows in London

Our sliding sash windows are high-quality and authentic, providing impressive performance with beautiful aesthetics, meaning you benefit from the best of both worlds. You won’t have to settle for anything less for your home, securing yourself the very best.

Timber sliding sash windows were once a favourite in London. However, these come with their problems, which is why we had to come up with something unique to replace them. Our finest uPVC sliding sash windows offer an identical shape and design, and can even be decorated to appear more traditional.

We incorporate the latest innovative technologies into our uPVC sliding sash windows making them incredibly strong and durable. They are designed with a sleek profile and discretely positioned hardware to further enhance the illusion of traditional timber windows

You can decorate your sliding sash windows with patterned glass and tailor the beading to your tastes. We offer a range of options to match the interior décor or exterior of your property. Choose from an overwhelming selection of colours and woodgrain foils to finish your windows to perfection.

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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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Sliding Sash Windows Prices, London

We provide high-quality double glazing in London at affordable prices, meaning you can find a sliding sash window option that works for you. Visit our online quoting engine to obtain a quote today.

By using this sliding sash window cost calculator, you will be able to plan your home improvements for your London property.

By inputting your measurements, we will be able to provide you with an instant price estimate.

You will be allowed to choose the desired size of your window, along with the colour frames you would like. We also offer options for decorative glass if this is desired, as well as a mixture of handles.

Alaskan Sash does not stop here. We want to offer you fully bespoke sash windows for your London home which will complement the style of your property.

You can see our list of sash window furniture options and sash window prices in London on our price guide page.

Alternatively, please do not hesitate to get in touch and ask questions about our sliding sash windows at Alaskan Sash Windows. Just head over to our online contact page.

Frequently Asked Questions About Sliding Sash Windows in London

How do you Open a Sash Window?

A traditional sliding sash window is opened by unlocking the window catch, so it is left in the open position. You can find this on the top of the sash. You then press upwards with the palm of your hands to separate the sash from the windowsill. The sash can then be lifted upwards along the sliding tracks from underneath to the aperture you desire.

What is the Sash Part of the Window?

The sash part of the window is the part of the window that opens and moves. A window sash is fitted within the window frame and holds the glass panes together.

Are Sash Windows Energy Efficient?

Sash windows are energy efficient. The sliding sash windows feature a six chambered profile. The unique design will trap warm pockets of air and retaining heat for longer. This enables the windows to achieve an impressive BFRC Window Energy Rating.

What Glass Options Are Available For Sliding Sash Windows?

Modern sash windows are fitted with double glazing as standard but can also offer you secondary glazing. Other glass options that are available for sash windows include insulated glazing, acoustic glazing and decorative or obscure glass designs.

How Do You Open Sash Windows for Cleaning?

Opening a sash window for cleaning can be done in a few simple steps.
1. If the tilt facility is fitted, you can slide the lower sash upwards and release the interlocks between the top and bottom sash. 2. You can then slide the tilt knob towards the centre of the sash and gently pull the sash towards you. 3. You can repeat this with the top sash. This option enables an easy opening to clean your sash windows.

Will uPVC Vertical Sliders Jam?

Unlike timber windows, a uPVC sash window is engineered to function smoothly on vertical sliding tracks, making them very unlikely to stick and jam with everyday use.