Box Sash Windows in London

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

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


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Our Box Sash Window Services


Trade Timber Windows and Doors London is an expert in installing new, replacing existing, and renovating traditional box sash windows. Our box sash window services offer a wide variety of beautiful box sash windows designed uniquely by our experts to make your home stunning and functional.

Renovating Box Sash Windows

We have a full range of services available for restoring box sash windows, from a routine refurbishment to a complete restoration. Our team of specialist tradesmen have been restoring sash windows in and around the London area for over a decade, helping our customers get more value from their homes. We expertly restore all makes and styles of sash windows, old or new.

Whether you have stripped frames, damaged or rotting sash cords, broken glass, missing weights or rotten window stops, we can help you bring them back to life again.

Call us today for a free survey on your home – whether it’s an emergency job or a long term project, you can trust us to do a great job!

Replacing Box Sash Windows

Replace your traditional box sash windows with the strength, stability and thermal properties of a modern UPVC frame, or go for traditional timber styles. We are your number one choice for box sash window replacement in London, whether your property is listed or not. At Trade Timber Windows and Doors London we deliver market leading service, quality and value every time.

Installing New Box Sash Windows for the First Time

It can be a daunting task to try to pull off a project like installing new box sash windows, but with the help of our ace glazing london team, you will be sure to have smooth sailing! We’re here to help you in every aspect of the project including deciding which window to order, creating customized drawings based on your home’s specifics and design, and offering expert installation!

With many years experience installing box sash windows, we have worked on some of the most prestigious and beautiful buildings in London, as well as on local residential work. Our goal is to provide outstanding customer service and a quality finish to each of our projects.

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

Did you know that there are different types of box sash windows?


Looking to add box sash windows to your property but not sure which style would be best? You could be enjoying gorgeous views of your back garden from your living room with new box sash windows. At Trade Timber Windows and Doors London, we offer a wide range of box sash windows.

UPVC Box Sash Windows

Our UPVC Box Sash Windows are a classical feature which can stand the test of time. The frame and glass construction that UPVC windows provide, combined with their easy cleaning ability makes them a choice for homeowners looking for a more traditional appearance. Appointments are available now for a free consultation to determine the style of UPVC Box sash window that is right for your property.

Timber Box Sash Windows

Timber Box Sash Windows are authentic, traditional sash windows made with high quality timber and crafted entirely from natural materials. They are used in many types of building such as residential houses, extensions, retirement homes, conversions, commercial buildings, residential flats and student accommodation. Our natural wood range enables you to add that unique feel into 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 Are The Features Of Our Box Sash Windows?

  • Weights and Pulleys
  • Guaranteed Performance
  • Internal Beading
  • Double Draught Sealed
  • Lockable Fitch Fastener

What are the benefits of our box sash windows?


You Get a Guarantee

You’ve put a lot of time and effort into your home, and we at Trade Timber Windows and Doors London guarantee that you’ll never regret making the investment of renovating, replacing, and installing sash windows from us. We offer a full 10-year guarantee on our box sash windows. We guarantee your satisfaction and we’re confident you will be delighted with our professional service.

Requires Low Maintenance

Our box sash windows are extremely reliable, durable and require minimal maintenance. We are highly skilled in installing windows on your property, and we’re equipped with the latest tools and technologies for low-maintenance windows.

Authentic Manufacturing Techniques

Our Box Sash Windows are based on authentic manufacturing techniques born and built on the principles of quality, integrity and dedication to craftsmanship.

Famed for their Durability

Our box sash windows will endure the test of time. We use dasket rails for glass sashes, giving them additional strength.

Excellent Acoustic Performance

Our box sash windows have excellent acoustic performance. They significantly reduce noise from the outside, making them ideal for homes

Twin Gasket System for Weatherproofing

Our box sash windows use twin gasket weatherproofing. The gasket system on our box sash window is one of the important parts of the window as it helps to prevent air, dust and water coming into the home. The bottom of the box sash window is brought into contact with the top of the frame to ensure weather tightness.

Highly Energy Efficient

Our box sash windows provide double glazing with air-tight seals to help create a safe, secure and energy efficient environment.

Windows are Heavily Customisable

Our box sash windows are easy on the eye and easy to fit. Choose from hundreds of styles, colours and sashes to suit your personal style and tastes. They also come with a range of options, such as matching arches, lintels and box sashes.

We allow you to fine tune these low maintenance box sash windows to meet your exact requirements and offer plenty of options for special glass, paint finishes, architraves and more.

Multiple Glazing Options

Our box sash windows are a popular choice with homeowners and builders for their extensive range of options, and their timeless beauty. All our wooden window frames can be refurbished, painted or stained to suit a specific design scheme, and each window can be fitted with a variety of glazing to provide modern insulation against noise and draughts, as well as being thermal efficient.

Hardware Accessories of our Box Sash Windows

Our Box Sash Windows are easily customized onto handcrafted hardware. The hardware accessory options include:

  • Solid Sash Lift
  • Cast Sash Lift
  • Pressed Sash Lift
  • Push Lock
  • Angel Lock
  • Round End Sash Stop
  • Cill Lock
  • Solid Ring Pull Sash Lift
  • Ring Sash Lift
  • Mighton Fitch Fastener Locking
  • Croft Lockable Fitch Fastener
  • Sliding Sash Fitch Fastener
  • Sash Pulleys
  • Vent Lock

Customise Your Box Sash Windows

At Trade Timber Windows and Doors London, we provide a wide range of customisation options for box sash windows. We provide excellent performance box sashes windows with double or triple glazing and energy efficient solutions. Some of our customisation options include:

Opaque Colours

  • Ash
  • Autumn
  • Ivory
  • Grove
  • Ghost
  • Calm
  • Cadet
  • Bristle
  • Lawn
  • Lilly
  • Marsh
  • Milk
  • Mist
  • sandscript
  • Powder Blue
  • Porcelain
  • Polar
  • Moon
  • Sea Green
  • Seashell
  • Slate

Glass Type

  • Chantilly
  • Everglade
  • Digital
  • Contora
  • Charcoal
  • Florielle
  • Mayflower
  • Minster
  • Oak
  • Pelerine
  • Taffeta
  • Warwick


  • Oak Stains
  • Idigbo Stains
  • Sapele Stains


  • Engineered Redwood
  • Red Grandis

Why Choose Trade Timber Windows and Doors London Services?

sep_imgIf you are wondering why Trade Timber Windows and Doors London is your best choice for box sash windows in the London area, here are some reasons why our customers prefer us:

Windows Services are Competitively Priced

Our box sash windows services are competitively priced. We make use of our highly skilled craftsmanship and time proven techniques, plus quality materials reasonably sourced to ensure that you get the products that you deserve at the best prices only.

Made to Measure to the Highest Standards

Our professional services are designed to meet all your requirements. We offer you a choice of our box sash windows products which is measured to the highest of standards. We guarantee that our box sash windows provide outstanding performance for some years to come.

Exceptional Durability

Our Box Sash Windows are exceptionally durable and capable of outlasting most other glazed window types. They are nearly maintenance-free, ensuring that they will stand the test of time as an attractive feature which increases the value of your property.

Old hardware issues

Traditional sash windows were never meant to last forever; they are timber-framed and vulnerable to rot, decay, cracking and more. If you’re concerned about draughts or your windows are in poor condition, it is time to repair or restore them.

Eco Friendly Box Sash Windows

Our Box Sash Windows proved to be far more energy efficient. What with one in every four households in the UK struggling to pay their energy bills, our box sash windows are the affordable alternative you’ve been searching for.

Extensive Guarantee

While almost every window company will offer a standard product guarantee, we believe our 10-year guarantee makes us stand out from the crowd. This is because it means minimal upkeep over the years. Our box sash windows give you peace of mind.

Friendly Customer Service

A dedicated team of our customer service professionals are ready to help you with any queries. This is the type of friendly customer service that we are proud to provide for you.


Let Us Start a Project Together

If you need Box Sash Windows, go with Trade Timber Windows and Doors Sash Windows London. We are approved by Checkatrade and CERTAS, which means we have undergone a rigorous inspection process to ensure that we meet the high standards required. Trade Timber Windows and Doors London is one of the UK’s leading providers of box sash windows, with a wide range of styles available. Contact us for your FREE brochure today or call 020 452 51669 for a free, no-obligation quote.




Frequently Asked Questions

Are box sash windows expensive?

The cost of a sash window depends on the style of window, the type of materials used, and whether it is a ‘standard’ size or not.

How much does it cost to restore sash windows?

Sash window restoration can cost anything from £300 to £3000. The average cost of sash window restoration is around £800. To get an accurate quote for your box sash restoration, please request a quote by calling 020 452 51669.

Can you just replace the window sash?

Absolutely. The benefits of the box windows are many, including their ability to be replaced. Replacing the box sash windows is a cost-effective way to breathe new life into your old property, and it won’t break your bank. Our box sash window installation experts can replace the entire sash windows in just two hours.

Are sash windows more expensive than casement windows?

Yes, our wooden box sash windows cost more than other types of window. However, we believe that the investment is worthwhile in the long term.

Can you match the style of my existing windows?

Our experienced team will provide you with their expert advice so you can be confident in achieving the consistent look you always wanted. From online enquiry to final install, we’ve got you covered.

I live in a listed building and/or conservation area, will you be able to work on my windows?

Yes, we are well equipped to work on listed buildings and/or conservation areas. We have been installing windows for window replacement in these areas for over 15 years so we are very familiar with the requirements.

How do I get an estimate?

Enter your details below to request a FREE, no-obligation box sash window quote from a trusted installer. They will get back to you as fast as possible with quotes, options, and plenty of ideas on how to make your home more beautiful and energy efficient. Your information is safe and won’t be shared or sold.

How long do box sash windows last?

Like any part of a building there is an element of risk involved with the way sash windows are treated or maintained and this will determine how long their life expectancy may be. However, a well maintained sash window can last for decades


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