SJB Sash Windows is a brand which is proud to present affordable bespoke sash windows London can be proud of.  We are a local firm, offering uPVC, timber and casement windows, as well as a variety of leading glazing options.  Whether you would like to know more about sash window prices UK homes pay, or if you’d prefer to take a look at the options available to you, we are always here to help.

We specialise in stunning sash windows South London homes are excited to install.  It is important to us that you receive a product which offers genuine value as well as a pleasing design.  Therefore, let our leading team take a close look at your window design needs – and let us help you find that perfect fit.

Buy uPVC Sash Windows London

With SJB, you can now buy low cost uPVC sash windows online with ease. It is as simple as looking through our catalogue and getting in touch with our team. Sash style uPVC windows are amongst our most popular choices. They are energy-efficient, easy to install and maintain, and extremely cost-effective. Why not set up a uPVC sash window with double glazing for added benefits?

Don’t worry about uPVC sash windows costs. We will help you build a bespoke quote to fit your budget to the penny. It’s important to us that you get the best possible prices for the services you deserve. Sash window prices UK and elsewhere should reflect incredible value. We will never charge you more than for the materials and labour you require.


We’ve mastered our craft over many years of manufacturing & installing a wide range of Sash, Casement, and Doors into a wide variety of homes.

Windows Installed
Doors Installed
Homes Served
Years Of Experience

Buy Timber Sash Windows London

For a stunning, long-lasting window installation, choose wooden sash windows London homes can be proud of. Choose double glazing London families rely on for safety, comfort and warmth all year round. Whether you prefer sliding sash windows or timber casement windows, we will help you choose a look which will weather years of use.

What’s more, our flush sash windows London customers buy are always easy to use and secure. Our products don’t just look the part; they offer genuine practical support and peace of mind. As a leading glazing company London customers can turn to for new windows and replacement glazing, SJB is always flexible to your needs.



Our truly bespoke design, manufacture & installation service allows you to craft your own design from our wide range of colours & styles to compliment your home.

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Single Colour Options

Dual Colour Options

We can also paint your new timber windows and door two tone, one colour outside, and a different colour inside.

We can also paint your new timber windows and door two tone, one colour outside, and a different colour inside.

Not Just Windows

We don’t just install sash windows in London and elsewhere.  We are a top London door company, which means we compete with many other firms in our region with high-quality patio doors, entrance fixtures and more.  Looking for bifold doors London or elsewhere?  Are you struggling to find the right fit?  Don’t worry.

We are specialists in a wide variety of door and glazing solutions.  Whether you like the idea of French doors London properties are making the most of, or if you’d like something more straightforward, we can help.  We only ask for a minimum of information from you before we get started.  This way, we can build a quote for you based on your specific needs.

Why Buy Secondary Glazing in London?

As window and door experts, we recommend double glazing London and beyond.  Secondary glazing and even triple glazing offer the perfect defence against the cold, as well as any unwanted intrusion.  Installing double glazing will mean you save money on your energy bills, too.  Choose double glazing South East London properties are crying out for.

If you would like to take a closer look at all our glazing services and options, all you have to do is ask.  You are at the very heart of your project from the design stage onwards.  This means – ultimately – you get to call the shots.


Regardless of the issue with your window, we will be able to offer a solution to your problem. We know that having a faulty window can be an inconvenience and can sometimes make you feel as though your home is insecure. That’s why we will complete a repair service on your sash window as quickly and promptly as possible. All of our repair services will leave your window and home in a safe and secure condition.

sash windows cord repair london

A faulty sash cord can often cause problems when trying to open and close your sash window. If this is the case, we can replace your sash window cord in no time at all and at an affordable price.

double glazed replacement windows

Some windows use spring balances to assist you in raising and lowering the window sash. This can be a real burden if it breaks. By contacting our friendly team today, we’ll be able to rebalance your sash window quickly.

sash windows draught proofing london

Having a sash window which is draught proof is important for living in a home which is warm and energy efficient. A home with a draught is one which is allowing heat and money. The quicker you have your home draught proofed, the more money you will save in the long run. Draught proofing is a quick process for our window experts to complete. Using weatherstripping, we will soon stop cold air from entering your home.

Double Glazed Sash Windows Offered by London's Leading SJB Sash Specialist

If you’re looking to make your home as energy efficient as possible, our window specialists can fit double glazing windows. All of our double glazed windows are built to minimise heat loss through windows and doors. Our specialist window fitters are able to install double glazing in all types of sash window. Simply speak to our friendly office team to match your preferences with a bespoke service from SJB.

Experts at SJB Implementing Repairs & Replacements for Sash Windows

Having dated, worn or faulty window frames and sills can dramatically age your home and even diminish the property value. Our expert sash window team can repair broken sash window frames if necessary, simply call the SJB Sash Window team for a free quote.

the sash window company in london

To inquire about any of our London sash window services, please get in contact with us via our contact form or call us today on 02082969487.


“Everything that was done was perfect. Absolutely recommend, Steve and his team are conscientious, reliable and first class workers.”
“I’d definitely use them again for future work and wholeheartedly recommend them to others.”
“Definitely recommended, everything is thoroughly done and methodical. Very courteous and polite.”
Fantastic job, on time, on budget, great quality and nice to deal with, great looking double glazed sash windows in existing wood box frames.
London Customer
You will not be disappointed with SJB Sash Windows service. It is second to none.
Travel Daily
A new look to my house. My fantastic new windows have transformed my home.
Stephen with Sash Windows did very good work – was responsive to the first call and in giving the estimate, and scheduling. Prompt, efficient, fast workers but without losing good workmanship – so important! Careful with the wood surrounds. Cleaned up well after the work was completed. I could well recommend this firm. I had insulating strips installed.
London Customer

Contact a Reliable London Glazier

SJB Sash Windows specialises in sash technology, but we offer so much more.  Need to set up bespoke windows and doors at a new property?  Want to replace or repair an existing system?  Take a look at our brilliant catalogue for inspiration.

We’re proud to offer double glazed sash windows London properties can rely on.  Call on 02082969487 or fill in our contact form for your bespoke quote, and get access to a deal you won’t find cheaper elsewhere.  Choose top quality, low cost sash windows UK families are already taking advantage of.