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Can You Just Replace Window Sash In Reading?

If you have sash windows in your home, you likely already know about their benefits, such as providing an excellent level of insulation, good ventilation, and complementing the aesthetic look of your property. However, over time, sash windows can become damaged and require replacement.

At Sash Windows Berkshire, we are a leading window replacement company in Reading, providing sash window replacement services to homeowners in Berkshire and South East England. If you have a damaged sash window and are wondering whether you can just replace the sash, read on to learn more about the process and what to consider.

What are Sash Windows?

Sash windows are a type of window design that typically consists of two movable sashes that slide up and down within the frame. They are popular among Victorian, Edwardian, and Georgian period homes but can be found in modern homes too.

Sash windows offer significant benefits, including:

  • Allow for better ventilation
  • Provide better insulation
  • Provide an elegant and classic aesthetic look to your home

However, they can also have some problems as they age, such as:

  • Drafts
  • Loss of functionality in the sash mechanism due to wear and tear
  • Rattling windows
  • Rot or discolouration of the wooden frame

Can You Replace Just the Sash?

Yes, you can replace just the sash of a window, but it depends on various factors that need to be considered before making a decision.

The key component to consider when deciding whether to replace the entire sash window or just the sash is the condition of the frame. If the frame has suffered damage or is rotten, it is better to opt for a complete window replacement than to replace just the sash.

If the frame is still in good condition, then a sash replacement is a more cost-effective solution that allows you to retain the frame and window surround of your homes original character.

Sash Window Replacement Process

If you have chosen to replace just the sash, the process typically involves the following steps:

  1. Measure the Sash First, an experienced technician comes to measure the dimensions of the sash correctly. This helps ensure that the new sash fits perfectly into the existing frame.

  2. Cut the new sash Once the measurements are taken, the new sash is cut to fit the exact dimensions of the old sash. A quality window replacement specialist will create an exact copy of the old sash, ensuring that the window retains its original design.

  3. Remove the Old Sash The old sash is removed carefully, and any remaining debris is cleaned up.

  4. Install the New Sash The new sash is correctly installed in the existing window frame. The technician ensures that the new sash is properly sealed to the frame to prevent any draughts from entering.

  5. Test the New Sash - The technician will make sure that the new sash operates correctly and does not have any issues.

Double Glazing Sash Window Replacement

Double glazing is an insulation technique that involves placing two panes of glass in a single window frame with a gap between them. It provides better insulation than single-glazed windows, which can be of great value for keeping your home warm during the colder months.

If your existing sash windows are single-glazed and in poor condition, the best approach may be to replace them entirely with new double-glazed sash windows. In this scenario, opting to replace just the sash would not provide the required energy-saving benefits.

However, if the window frames are of good quality and you only need to replace the sash, it is possible to add a double-glazed pane to the new sash.

Cost Considerations

Replacing just the sash can be a cost-effective solution. The cost of a sash window replacement usually depends on the window size, the number of windows needing work, and the condition of the existing window frames.

It is usually less expensive to replace the sash of a window instead of the entire window frame. However, the cost may increase, particularly when double glazing is added or when the frames are damaged and require repair.

At Sash Windows Berkshire, we offer free consultations and price quotations, which help you understand the cost of replacing or repairing sash windows, and we ensure that our pricing is transparent and reliable.


In conclusion, replacing just the sash of your damaged sash windows can be a cost-effective solution that allows you to retain your window frame and maintain the character of your home.

At Sash Windows Berkshire, we provide high-quality sash window replacement services for our clients in Reading, Berkshire, and South East England. With extensive experience and knowledge, you can trust us to deliver the best sash window replacement services possible.

If you need your sash windows repaired or replaced, contact us at 0118 449 2798 or email us at [email protected] to schedule a free consultation with one of our window specialists. You can also visit our website to learn more about our services.

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