Sash Window Restoration 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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What is Sash Window Restoration?


Sash window restoration is the process by which sash windows (also named Casement or Sliding sash windows) are restored to their original condition, function and beauty. This requires treatment of both the timber and leadwork, with particular attention given to the locks, handles and in-swinging counterweights. The entire process requires a high level of skill, artistry and craftsmanship to ensure windows are not only restored to an authentic period appearance but also keep all necessary historical integrity requirements from the Historic Building Technical Advisory Service (HBTA). With a commitment to customer satisfaction, the Trade Timber Windows and Doors Sash London team of windows restoration experts will ensure that your sash windows are restored to the highest quality standards.

When Should I Restore my Sash Windows?


When the frame is rotten

When your window frame rots, it tends to shrink over time. As a result, the sashes tend to move inwards or outwards. When you open and shut the windows, gaps between the sashes and panes can occur. This is caused by the wooden glazing units swelling during damp weather, which pushes them away from the frame.

Reduced energy-efficiency

You should consider sash window restoration if you are concerned about your sash windows’ energy efficiency. To improve energy efficiency on sash windows, it is essential to stop the “leak” into the frame of the window itself—i.e., draught-proofing.

Poor functionality and deterioration

The most common problems with sash windows are that the sash cords snap, causing the window to become loose and not open properly. This is where we come in. We offer a full-service window repair and restoration service for sash windows all across London.

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.

Lack of Proper maintenance

Sash failure is often due to poor maintenance. Neglecting even basic sash window care can lead to problems, including draughts and water ingress. This can eventually lead to structural damage involving the sashes. If you’re not careful your whole property could be at risk of damp and rot. Treating your sashes with respect might seem like a daunting task, but we’re here to help you do it safely.

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

What are the Benefits of Sash Window Restoration?


Eliminates draughts

Because sash window restoration deals with the windows’ many moving parts, it blocks draughts and even vermin from entering your home. Lesser quality windows can’t provide this same level of efficiency.

Helps to eliminates rattles

Silencing the rattling sash windows in your period home is an important aspect of restoring your sash windows. It provides a more energy-efficient environment as well, as poor draught-proofing is what causes many sashes to rattle.

Offers improved sound ventilation

Do you want to reduce the level of external noise in your home? Sash windows are effective at reducing noise pollution, thanks to their cloth-lined frames which are filled with two wooden panels.

Enhances insulation

Sash windows that are drought proofed are perfect for home and office renovations, making them better at insulating, reducing your heating and cooling bills and keeping energy costs low.

Environmentally Friendly

A professionally refurbished sash window offers a durable and energy-efficient solution, with the reassurance of warranty and solid wood being a natural, environmentally friendly material.

Reduces dirt and dust ingress

Sash window restoration can significantly reduce the amount of dirt and dust which enters your home and reduces the costs for both heating and ventilation.

Improves security of the home

Windows serve a variety of functions, but security is one of the most important. It’s important to make sure that your home is as secure as possible so you don’t have to keep worrying about break-ins and other potential threats.

A home with draught-proof windows allows owners to rest easy, knowing that their belongings are safe and sound inside.

What are the Steps For Restoring Sash Windows?

  • Sash Window repair
  • Remove Old Paint From Sash Windows
  • Hand-painting Frames
  • Replacing All Sash Cords
  • Rebalancing Sashes by Re-weighting
  • DS Perimeter Draught Sealing System
  • Final Paint Application

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

Do I need to supervise/be at home when the work takes place?

If the work is dangerous in any way you must be available to supervise. The vast majority of window restoration work, however, can be undertaken with you absent from home and without issue.

Do I need to remove curtains/blinds/furniture before the window restoration services?

No. The window restoration services by our sash windows restoration team at Trade Timber Windows and Doors London are carried out carefully and with a knowledge of how to avoid getting in your way.

Do I need planning permission to restore windows?

The short answer is that it depends on what work you want to carry out. If the work amounts to creating an opening (an opening is defined as any point where a hole larger than 50 millimeters wide occurs in the wall or facade), then you will need planning permission.

Can old wood windows be restored?

Not all old windows can be restored. Old-style flat sash windows are particularly difficult to restore because of the type of joinery involved. If you think you may have antique flat sash windows, do not despair! Flat sash window repair is still possible with these original components, and even new aluminium flat sash windows can be obtained that will fit the original casing.


Information about London


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