Bespoke Timber Sash Windows In London

Experience the beauty and craftsmanship of authentic, double-glazed sash windows crafted by our team of joinery experts at Todi & Boys. For over three decades, we have proudly crafted sash windows for London’s conservation areas – where beauty and quality are essential.

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  • Beautiful slim profiles

  • Designed & installed by our professionals

  • Like for like copies

  • Fully insulated, draught proofed & double glazed


London's Finest Timber Sash Windows

A long time ago, Todi & Boys chose to specialise in making traditional timber windows and doors crafted from the finest choices of hard and softwoods. As a result, our company collectively has tens of thousands of hours crafting and installing the best sash windows in London.

Our luxurious double-glazed sash windows repel the chill on even the coldest nights. Plus, they give homes an excellent finishing touch with the classic lines synonymous with Edwardian, Georgian and Victorian design. Not only are they stunningly beautiful, but also highly energy efficient, so you can enjoy year-round comfort while saving on energy costs.

From short to tall, thin to thick, simple to complex, and downright bizarre. Nothing surprises us because we’ve seen it all, and our customers have peace of mind knowing that they’re in safe hands with even the most unique like-for-like replacements.


Specialists In London's Conservation Areas

We’ve been crafting timber sash windows in London’s conservation areas for almost three decades. Our precision manufacturing means that each window is made to order – so whatever your style or detailed specifications may be, we can accommodate them. These wooden sash windows come in several attractive finishes, such as varnish or paint in any colour you can dream of.

When we find new tools or techniques, we ask ourselves;

  1. Will this make for a more beautiful window? And,
  2. Will this make our window last longer?

If the answer to both is yes then we’ll go ahead and as a result, we’ve developed the highest quality sash windows in London.


Replacements For Any Style Of Sash Window

It’s rare that we come across a sash window that we can’t copy like-for-like. It’s what we do best, we’ve spent close to two decades matching traditional heritage windows in and around London’s conservation areas.

We have the experience and the tools to create beautifully elegant copies of box sash windows and doors that incorporate modern technologies that bring them into the modern age. You’ll have the perfect balance of comfort and beauty that will have your neighbours asking “Where did you get your windows from?”.


Choosing Todi & Boys For Your Sash Windows

For almost three decades, we have been creating sash windows throughout London with the goal of perfecting our craft and providing high-quality service for our customers. 

With every year that passes by, we strive to improve upon both the quality of our products as well as the level of care and attention given in order to ensure complete satisfaction from all those who rely on us.


Let Us Brighten Up Your Home!

At Todi & Boys, we have used our bespoke designs to make classic and timeless sash windows that bring a sense of beauty and character throughout many London homes. 

Whether your project is centred around period restoration or modern transformation, these versatile and long-lasting windows will add an elegant touch to any property. Let us help you brighten up the look of your home with one of our delightful bay sash window creations!

Sash windows are a traditional style of window that was initially popularised in the Georgian era, which continued into both Victorian and Edwardian periods. Sash windows typically feature two windows that open by sliding up and down on rails and can be found throughout London’s conservation areas.

We proudly serve all areas of London, specialising in replacement timber sash windows. You can find our work in Wandsworth, Balham, Clapham, Hammersmith, Twickenham, Richmond, Kensington, Putney, Earlsfield, Chelsea, Fulham, Wimbledon, Surrey, and many other locations.

We certainly do! All of our products come with warranties which are determined by your choice of timber, and where necessary, the level of maintenance required. Contact us today for more information.

If you’re in the process of searching for your ideal sash windows, you may have been shocked by the vast range in prices you have been quoted from different sash window companies. This is something that can often cause a level of anxiety – and you need to be 100% sure you are making the perfect choice before parting ways with your allocated budget. Here are some influencing factors that impact the cost of sash windows:

● Quality of craftsmanship
● Number of windows and doors required
Choice of wood
● Size and dimensions
● Number of panes
● Style of glass
● Finish and design details
Installation costs
● Historical/conservation requirements

Just like when you’re buying a house, or even a new car, there are several things that can raise the costs of sash windows – to make the best possible decision, you need to ensure you are choosing the perfect partner that will provide you with exactly what you’re looking for. We offer tailored advice to all of our customers that guides you through all aspects above, helping you get the absolute most out of your home renovation.

Todi & Boys are one of the few sash window specialists in London that can provide an exact replica of your current window. From the style of timber to joints, ironmongery and replicating the slimmest of profiles. If you have any questions around your specific window – contact a friendly member of our team today to see how we can help.

If you can, always chose Accoya. It may be more expensive, but it will provide you with a return on your investment within 10 years. There’s no rot, on-going maintenance, such as painting, to worry about and it’s environmentally-friendly too!

But you know your home much better than we do, so if you would like some of your new sash windows in Accoya and the rest in a softwood such as Sapele, that’s perfectly fine. We can do both and are highly skilled at working with both of these options too.

You can learn more about the best wood choices here.

Technical drawings of your new sash windows are a key step in ensuring you gain the necessary permission to kickstart your project – and in many of London’s conservation areas – technical drawings are a necessity. Contact us today to see how we can help you with your technical requirements so you can paint the perfect picture of how your new sash windows will look.

When looking to replace your sash windows in a conservation area, it’s crucial to familiarise yourself with area-specific guidelines and consult with local planning authorities early on. A risk at this stage is having your application denied, as you cannot reapply for another 4 weeks – subsequently holding you back. By employing experienced professionals such as Todi & Boys, we can ensure your design aligns with all preservation and potential energy requirements. If you need guidance, our team can help you submit a well-documented application to avoid any risks of rejection.

Investing in sash windows brings with it a range of modern benefits, which include:

  • Increased curb-appeal for your London home
  • Improved double-glazing and draught-proofing
  • Enhanced window security
  • Improved energy efficiency and reduced heating bill 
  • Experience greater peace-of-mind knowing that you are reducing air pollution and blocking out unwanted noise

Sliding sash windows are traditionally composed of two sashes that can be opened from the top or bottom or both, instead, they slide up and down in vertical grooves against counterbalancing lead weights attached by cords for easy operation. While traditionally these windows have no outward swing, modern designs tilt inward and outward for convenient cleaning!

Our team carefully measures and crafts each window to ensure it fits perfectly into your home. We work with you throughout the process to ensure all your needs are met. Once ready, our team will fit each window securely and professionally, leaving your home exactly as we found it. 

We’ll ensure that your sash windows look great for years to come, as well as the latest technology to safeguard against air and water leakage.

Get in touch with our team to find out more about our sash window installation service.

Sash Windows London

Come and visit our London workshop

Come see our craftsmanship up close, meet our friendly team, and discuss your needs. Contact us today.


Wood choice 1: Sapele

Sapele is a north African hardwood that’s part of the mahogany family. It looks beautiful and has incredible rot resistance. It takes years for any rot to set in, unlike softwood, which can start to rot in just 1 to 2 years. Read more here.

Wood choice 2: Accoya

Accoya is a softwood that costs more than most expensive hard wood. It doesn’t absorb water in the way other wood does. It doesn’t rot due to the fact rot needs water to develop. Accoya isn’t affected by insect attacks either. Read more here.

Our areas of expertise



The highest quality spray paint applied with a methodical preparation system that is specially designed to make our windows and doors make your home look beautiful for decades.

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We never compromise the 100 year old traditional joinery of the past. All the modern benefits of new windows and doors with the same elegant profiles as your originals.

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Small investments in time taking care of your windows and doors will pay dividends over the years. Find out the best practices to keep your windows and doors looking beautiful.

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When fitting in period properties we never know what we'll find. If something unexpected happens, you'll want a skilled, experienced team with a positive attitude on your side.

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What separates timber windows and doors that last years or decades? The secret is hidden in the joints. Our traditional joints are essential to windows and doors that last decades.

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Draught Proofing

A small detail that has a huge impact on your home. Draught seals are easy to add and difficult to masterfully blend into your windows and doors. What makes good draught proofing?

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vent lock

Locks and ironmongery

A cross between padlocks and jewellery. We use high-security locks paired with beautiful ironmongery. So what makes a lock keep you safe whilst complementing your home decor?

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double glazing

Double Glazing

Double glazing will insulate your home, reduce noise, make your home safer, and increase your home's value. We're one of a handful of joineries that make our own double glazing.

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Our Google Reviews

Jon Chan, Camden

Albi and team were very helpful and efficient, accommodation some changes and making helpful suggestions during the initial requirements gathering phase. Finished product is excellent after an efficient install. The shutter company we subsequently used said they’d never seen such perfect sash windows. See More.

Ceeri Heasman, Putney

Following a recommendation from a neighbour we used Todi & Boys to replace all our old sliding sash windows with double-glazed versions of the same. Price quote was lower than other companies we’d had to quote, work was carried out quickly & efficiently & there was very minimal damage to the interior (something I was worried about). Have already recommended to friends & looking forward to a cosy Winter with our draft-free new windows! See More.

Mike Sims, Clapham

Todi and Boys have over the last few years, installed six double glazed sash windows for us. Our expectations are high and the company have exceeded what we hoped for, with quality, service and workmanship in every single window. So when we needed a new front door and frame, Todi and Boys were our first choice. Having just completed the work on the new door, we are absolutely thrilled with it both with the quality and finish which are superb.. From start to finish, the care and attention has been amazing, even the invite to view their factory and to select the right colour for the door. Todi and boys are a family run business and the whole team go the extra mile to give you the service . quality and workmanship that many other companies do not provide. We have no hesitation in highly recommending them for anyone needing new doors or windows. See More.

Libby Grant, Chelsea

I am absolutely in love with our new door and beautiful new timber sash windows. The service was fantastic from start to finish and we couldn’t be happier with the outcome. Would not hesitate to use Todi again and couldn’t recommend more highly. See More.

Sam Moore, Fulham

Todi and Boys were a pleasure to deal with and were both friendly and professional from start to finish. The new wooden sash window we had installed was fitted incredibly carefully. I would highly recommend them to anyone considering replacing existing sash windows. See More.

KP, Wandsworth

I recently had the sash windows in three rooms replaced by Todi and Boys having seen their van in the area and looked at their website. Their workmanship was excellent both in production and fitting. They did the work on time and made sure everything was clean afterwards. The sash windows look great and I would definitely recommend them. See More.

CDH, Putney

Todi & Boys recently replaced two of our sliding sash windows. The quality of the product is excellent, installation was quick & efficient, and the customer service support was friendly, efficient and exceeded our expectations. A particular call-out to Ada and Shab who were very helpful throughout. See More.

Paul Dolan, Wimbledon

Todi & Boys provided box sash windows within 6 weeks of my uprated specification for the bay window. The increased specification included differential widths of glazing, laminating, providing an acoustically superior barrier as well as a beautiful looking hardwood sash window. See More.

Kate Gibson, Twickenham

Over the years, I have had Todi & boys replace all the sash windows and casement windows in my house including the front bay, and my French doors onto the garden. I can’t recommend them highly enough. They offer good value and provide an extremely professional, efficient service. They’re also, without exception, polite, and friendly and take great pride in the service they give to their customers. See More.

Jane Quayle, Richmond

Todi & Boys window fitters have done a great job fitting my new wooden sash windows. I’m really delighted with the result and their efficient, very pleasant service. See More.

Tony Lafosse, Putney

Really good experience with Todi and Boys. The whole team, Todi, Ada and the installers have been very helpful and considerate. The sash windows seem high quality. I would happily recommend this company for anybody needing sash windows. See More.

Matthew Hepburn, Surrey

I can’t recommend Todi and the boys and girls (Ada) more. They were the most convincing quote for renewed sliding sash windows, bay window and front door. This doesn’t mean cheapest, it means best. Having their own workshop means they design and make all products and this is a big advantage. We were looked after very well by Ada, everything was done on time to the highest quality. Our new front door is superb and the children’s room is now warm! Thank you all! Wishing you continued success! See More.

Gina Wilton, Putney

Todi and boys recently arranged and installed two double glazed sash windows in our Victorian terraced house. Extremely happy with both the quality of the windows themselves as well as the professionalism and general attitude of the workmen that came to fit them. Service has been fantastic throughout the process and would definitely use them again. See More.

Jane Jones, London

I cannot recommend Todi and Boys highly enough. We are delighted with the quality of our new replacement sash window (the second we have had from the team) and are particularly grateful that the window was replaced at a very busy time before Christmas – fitting in with our plans. Ada and the team are most professional and friendly and we will definitely be using them again! See More.

Chris Haworth, Putney

We had a very good experience with Todi and Boys from start to finish. The end product of our box sash windows is excellent and the customer service & after sales care has been similarly so too. Well recommended. See More.

Camilla Orr, Clapham

Having just had most of our sash windows replaced by them, we couldn’t recommend T&B more highly. The quality of the workmanship is excellent, and the whole process is managed extremely professionally and efficiently. Any questions or small issues were dealt with quickly by Shay. Given the quality and detail, we also found the quote to be competitive. See More.

Hereward Walker, Fulham

Had 5 bespoke double glazed wooden sash windows made and installed by todin and boys. Service from start to finish excellent. Quality and price of product good and the team who installed left the house immaculate. Highly recommend. See More.

Rosie Doggett, London

Our Victorian terraced house in Battersea contained the original Victorian sash windows which were draughty, painted shut in places and had been repaired many times. Most importantly we were being woken each morning at 4.30 by the first ‘plane of the day as the old windows had little decent sound-proofing. We obtained 3 quotes for our wooden Victorian-style double-glazed spray-painted sash windows and found the Todi and Boys proposal to be reasonably priced and of the best technical specification. We visited their workshop in Putney and we were impressed by the quality of their workmanship. See More.

Get in Touch

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