Casement Sash Windows in London

We offer wooden sash window restoration, sash window installation, double glazing, maintenance, refurbishment and replace old sash windows.

Arthur East

Arthur is a hardworking and dedicated Glazing specialist, with over 10 years trades experience


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Why Choose Our Casement Sash Windows?


Thermal efficiency

Thermal efficiency is one of the advantages of casement sash windows. Casement sash windows allow maximum airflow, without letting any heat escape through them. Our sash windows are made from quality, eco-friendly materials – which means less energy wastage. They’re also designed to cut down on draughts for a more efficient and comfortable home.

Aesthetically pleasing

Our casement sash windows have been designed to fit a variety of architectural styles and are pleasing to the eye.

Whether you are looking for a Georgian, Victorian or a modern style casement sash window, we will work with you to create the best solution. With our casement sashes, we can help you create a perfect balance between form and function.

Excellent security

Another advantage of casement sash windows is the ability to improve your home’s security features. The panes of glass are designed in such a way that it is impossible for anyone to reach inside and open the window from the outside.

This makes them perfect in both residential and commercial buildings as a way to improve peace of mind. Plus, they can easily fit into an existing structure, taking up very little space while still giving you excellent access into your property.

Extra Durable

Our casement sash windows are more durable than most standard window designs as they use sturdy frames. This is particularly important if you have a larger window where extra strength can make a real impact on your home’s resilience to storms. Our casement sash windows are built to last; they will remain in perfect working order for many years to come. ​

Low Maintenance

Our casement sash windows are known for their low maintenance. They roll up and down smoothly without getting stuck, even after continuous use. And when they get too dirty, they require just little cleaning to bring it back to its original glory.

Naturally Insulating

By installing these casement sash windows into your property, you can reduce the amount of energy you use to heat and cool your home. With the ability to open them at any time, you effectively control your property’s internal temperature for an even more comfortable and consistent environment.

A variety of finishes

Choose from natural finishes, whether you are going for wood, uPVC or aluminium. We have an extensive range of colours, sizes and designs for you to choose from.

What features do our Casement Sash Windows have?

  • Single, double or triple glazed
  • Improved Draught proofing
  • Choice of lock & catch styles
  • Security locks & safety glass
  • Acoustic glass options
  • Low maintenance and easy to look after
  • Farrow & Ball or RAL colour, microporous paint
  • 10 years guarantee.

Our Guarantee

  • Unrivalled Expertise in Door & Window Glazing
  • Industry-approved Door & Window Glazing
  • High-quality Door & Window Glazing
  • Unbeatable Value for Money
  • 100% Safety and Satisfaction
  • Checkatrade Registered
  • Homepro Insured
  • CERTAS Guarantee

Why Choose Trade Timber Windows and Doors London?


When it comes to installing casement sash windows, you can’t go wrong with Trade Timber Windows and Doors London. Here are top reasons why you should consider us for your casement sash windows.

We are Highly Experienced

Trade Timber Windows and Doors London is a company of experienced professionals who focus on your individual needs. We take a personal interest in every aspect of the job, ensuring the end result we achieve is of the highest standard possible. With over 10 years’ experience in the industry and great reviews throughout London, there is no job we cannot handle.

We are Accredited

Trade Timber Windows and Doors London are the UK’s local, accredited experts for casement sash windows in London. All our products and services carry the BBA certificate and will be fitted by an accredited fitter. Our windows are manufactured here in the UK and carry a ten-year guarantee on their products.

We carry full Public Liability Insurance

We are a professional company that prides itself of being able to offer the customer an excellent product at an exceptional price. With no franchise fees, the price you see is what you pay. And we have public liability insurance so you’ll be covered for any scenarios that were not foreseen.

We offer Competitive Prices

When it comes to Trade Timber Windows and Doors London, our prices are extremely competitive and our aim is to have a minimum interruption to your home life whilst the work is carried out. Call us today for a free quotation. We will be happy to give you some information about the benefits of our products.

We offer 24/7 Emergency Call out Service

Sometimes it doesn’t matter what time of the day or night a window breaks, you just want it fixed fast. Trade Timber Windows and Doors London provides 24/7 emergency call-out service, any time of the day. Our team is fully equipped to handle any window restoring job – whether it’s to double glazing units, sash windows or traditional casement windows.

We are CERTAS Approved Installers

Trade Timber Windows and Doors London offers a range of CERTAS accredited double glazing, sash and case windows & frames. This means that all our windows are CERTAS approved (Fenestration Self-Assessment Scheme) which is an independent accreditation scheme and the UK’s foremost installer accreditation scheme with BBBEE Level 2 compliance. With over 10 years of experience, we pride ourselves on carrying out no-compromise quality installations across London and surrounding areas. You too can join the list of our satisfied customers when we work for you. Request a free quote today or call 020 452 51669 to speak to someone about your project.

Areas We Cover

Trade Timber Windows and Doors London covers all of the capital’s boroughs including Kensington, Wimbledon, Richmond, Fulham, Ealing, Hammersmith, Acton, Chiswick, Kingston upon Thames and even our very own City of Westminster. We can help you with your installation or replacement windows in these areas and many others. If you’re within our coverage area we will be more than happy to help you.

Our Casement Sash Window Services in London

sep_imgCasement Sash Windows Installation

If you’re looking to improve the overall look, feel and functionality of your home by having a new set of casement sash windows installed, then Trade Timber Windows and Doors is the right place for you. We have professional casement window installers in London that regularly work with homeowners on a wide range of their casement sash window needs. Our clients expect us to provide them with expert services, and we always meet those expectations.

Casement Sash Windows Repair

Trade Timber Windows and Doors specialises in Repair of Casement window frames, repair of locks, supplying and fitting of casement sash stops, adjusting sashes up and down, hinge repairs and general casement window repair. We have been carrying out casement sash window repairs for over 10 years. Our highly skilled technicians provide a fast and efficient service for all your casement sash window repair needs. We supply and fit top-quality replacement components, keeping your casement sash windows working like new again with the minimum of fuss.

New Casement Sash Windows Replacement

With an exceptional reputation for serving the needs of local homeowners since 10 years, Trade Timber Windows and Doors’ window replacement services in London have built a trustworthy service based on decades of expertise. We replace old, broken or damaged casement sash windows with new ones. Our aim is to match the original look and style of your existing sash windows by replacing the sashes, capping and poles to ensure a long-lasting solution. We use only top-quality materials and time-tested methods to ensure that your sash windows are secure, durable and last for a lifetime.

Casement Sash Window Refurbishments

Your window is a key part of your home’s exterior and as such, are vulnerable to damage from wind, displacement, or simply age. In such situations, refurbishment may be your best solution. At Trade Timber Windows and Doors Sash Windows London, we provide the best casement sash windows refurbishment in and around London; our accredited professionals use quality materials and working practices to deliver maximum, energy efficiency and durability with unparalleled results. Don’t take chances with your casement sash windows, contact us today to get a free quotation and arrange a convenient time for fitting. Our highly trained team of technicians are here to give you maintenance advice while also helping add value back to your home.

Request for a FREE Quote

We offer a variety of sash window repairs, new installations, maintenance, refurbishment and replacement services in London.

To find out more about our services, get free quotations, or arrange an appointment, call this number 020 452 51669.


What Types of Casement Sash Windows do we install?


Trade Timber Windows and Doors has the widest selection of sash window types in London. See all our Casement Sash Window styles here.

Timber Casement Sash Windows

The Timber Sash Casement has become more popular in recent years due to its aesthetics and it’s improved thermal properties. This excellent range not only has the traditional vintage aesthetic but also includes a modern feel when it comes to functionality and versatility. If you are looking for a quality traditional range of Timber Sash Windows that really let in natural light, look no further than Trade Timber Windows and Doors London.

uPVC Casement Sash Windows

The UPVC Casement is a very popular window style which can be glazed with a number of different options, including obscure glass or leaded glass as well as being double styrene glazed for maximum insulation. The UPVC Casement will give you the most benefits of an uPVC window but has similar appearances to traditional timber.

A bespoke design for your stylish home, Trade Timber Windows and Doors can bring you a broad range of top quality and reasonably priced uPVC window frames in a variety of designs to satisfy all tastes.

Aluminium Casement Sash Windows

Aluminium Casement Sash Windows are made from aluminium. The aluminium is formed into windows with a hinged frame and sashes that open. They are very good at keeping the weather out and they usually have a glazed panel in the top half as well as the bottom for natural light to enter. This type of window is particularly good for conservatories because it enables you to see outside without allowing the elements in. Our aluminium Casement Sash Windows are designed to be wind-tight, to have a low U-Value and to be maintenance-free.

What do our customers think?


I called Trade Timber Windows and Doors London. They come out and repair my old windows. I am very happy and I recommend them to my friends. Thanks guys. Trade Timber Windows and Doors London was extremely efficient in attending to our sash window repairs. They were also more professional than others and they provided me with a ten- year guarantee on all their works. Their customer service was also good and they also worked within my budget. Overall, it has been a great experience working with them and I will continue to use their services in future too.

Contact us for casement sash windows in London


Need casement sash windows in London? Then contact us. Trade Timber Windows and Doors London has over 10 years’ experience serving the London area. We offer expert casement sash window services, at affordable prices. Our casement sash windows are designed to give you maximum strength and durability. We employ locally trained technicians that visit your premises and carry out an assessment of your casement sash window requirements, before giving you a free no-obligation quotation. We work with you to find the style and design you want, installing sash and casement windows in London. Contact us today for a free, no-obligation quote. We look forward to hearing from you.


Frequently Asked Questions

When should I bite the bullet and buy new casement sash windows?

This is a question that we, as a casement sash window installation company, are asked by our clients on a regular basis. The answer is quite simple; if your windows are not working efficiently then you need to look into replacing them ASAP.

Should I change my aluminium or timber casement windows?

It can be a hard decision to make and, of course, the type of window you choose should depend on a variety of factors such as budget, use and even how the home looks with a particular style. It could be that aluminium windows are less expensive than timber casement windows however installation and repair costs can vary greatly – it’s certainly worth having a discussion with your local builder before making these decisions.

What is a sash on a casement window?

A sash is a movable frame on casement windows that allows you to open and close the window. It basically controls how much light and air enters through your door or window. Traditional timber windows have two sashes.

Can you replace casement windows with sash windows?

Replacing the window’s original casement with a sash utilising the existing frame can be done for most windows that still have their original sashes, and maintain the character of the property.

Can you match the style of my existing windows?

Of course. We carry a wide range of window styles to complement your home’s architectural features. Each window is built using the finest materials in order to be energy efficient and maintenance-free for years to come.


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