Sash Window Repair Cost Calculator London
How Much Does Sash Window Repair Cost?
The cost of repairing sash windows in London typically ranges from £150 to £3,000+ per window, depending on the extent of timber decay, broken sash cords, glazing condition, and the level of sash window refurbishment needed.
Use our free sash windows price calculator to get a tailored estimate for your specific windows in seconds.
Sash Window Cost Calculator
Estimate the cost of repairing timber sash windows, draught-proofing, broken cords, and whether you need replacement sash windows or restoration.
Select Window Type
Single Sash Window
Traditional single sash window repair and restoration.
Double Sash Window
Double sash window system with two connected windows.
Bay Window
Bay sash window restoration and repair estimate.
Select Window Condition
Good Condition
Window is generally working well with only minor issues such as slight draughts or stiffness.
Worn Condition
Window shows signs of wear including rattling, draughts, or difficulty opening and closing.
Poor Condition
Window has visible damage such as rot, loose joints, or significant operational problems.
Select Window Size
Small
Bathroom window or compact sash window size.
Standard
Typical sash window size commonly found in residential properties.
Large / Tall
Larger or taller than average sash window dimensions.
Select Services Required
Sash Cord Replacement
Draught Proofing
External Sill Repair
Timber Repairs
Single Glass Replacement
Double Glazed Unit Replacement
Ironmongery Installation
Full Refurbishment & Painting
Looking for Multiple Repairs?
If your sash window requires several repairs, we recommend selecting Full Refurbishment & Painting, which includes a complete restoration service covering multiple repair areas.
How many windows need repair?
Specify the total quantity of sash windows requiring restoration to calculate your estimated range.
Your Estimated Repair Range
Your Selected Options
This estimate is intended as a general guide based on your selections. A more accurate quotation can be provided following a professional assessment of the windows.
Need an Accurate Sash Window Repair Quote?
Our online calculator provides an estimated price range. For a more accurate quotation, our specialists can assess your windows and recommend the most suitable repair solution.
Send Window Photos
Upload a few clear photographs of your sash windows, including any visible damage, draught issues, or glazing problems.
Receive Expert Advice
Our team will review the condition of your windows and advise whether repair or restoration is the best option.
Book a Free Assessment
Arrange a convenient survey appointment anywhere across London with our experienced restoration specialists.
How Our Sash Window Cost Calculator Helps You Budget
Many homeowners search for a replacement sash windows cost UK or general refurbishment pricing because costs can vary significantly. Whether you are dealing with deep timber rot, broken sash cords, or looking for a wooden sash windows price list, factors like glazing and frame condition influence the final investment.
Our calculator has been designed to give you a realistic estimate before booking a free assessment. It provides valuable guidance for anyone researching the cost to repair or refurbish sash windows in London.
Specialist Timber Restoration Experts
Unlike general builders, we specialise in traditional timber window restoration. Our skilled joiners use heritage-approved techniques, from hardwood splicing to sash cord replacement. In many cases, original windows that appear beyond saving can be successfully restored, which is often more cost-effective than a full replacement.
Conservation-Friendly Repairs
If you own a period property, maintaining original timber is often the preferred option. Our restoration methods preserve historic character while improving energy efficiency—perfect for those looking for sash window refurbishment in protected conservation areas where replacement might not be permitted.
Long-Term Value and Workmanship
A reliable repair relies on quality materials and attention to detail. We offer professional structural repairs and draught-proofing to ensure your windows perform as well as they look. If your windows are beyond repair, we also provide high-quality replacement services as a replacement wooden windows near me solution.
Frequently Asked Questions
Several factors determine how much your sash window repair will cost. These include the size of the window, the extent of damage (surface-level wear vs. structural rot), the type of materials needed, access difficulty, and whether the property is in a conservation area or listed building. The number of windows being repaired at once can also affect the overall price, as multiple windows are often quoted at a better rate.
Each home is different, our sash window repair specialists assess all these variables before providing a quote.
Want a real estimate? Use the calculator above for a ballpark figure, then fill in our contact form and upload a photo of your window, we’ll come back to you with an accurate quote based on what we can actually see.
Yes. Our online calculator gives you an instant ballpark estimate based on the most common repair types. However, because every window is different, the most accurate way to get a real quote is to share some details and a photo of your window directly with us.
Ready for a proper estimate? Fill in the short form below, attach a photo of your window, and one of our specialists will review it and come back to you, no obligation, no sales pressure.
Full sash window restoration is a multi-stage process. It typically includes stripping old paint, repairing or replacing rotted timber, re-glazing if necessary, draught proofing, and repainting to a high finish. The more deteriorated the window, the more stages are involved.
Our wooden window restoration service covers all aspects of this process. For windows that are beyond economic repair, we also offer wooden window replacement as an alternative.
Restoration or replacement? It’s not always obvious, send us a photo and we’ll give you an honest assessment of which route makes sense for your windows.
Glazing repairs can range from minor crack sealing to full pane replacement or re-glazing. The type of glass, thickness, and whether you’re upgrading to double glazing all affect the scope of the work. Period properties may also require specific glass types to meet conservation guidelines.
If you’re considering upgrading at the same time, our double glazing and re-glazing service for existing sash windows is worth exploring, it’s a great way to improve thermal performance while keeping the original frame.
Upload a photo of your glazing issue via the form below and we’ll assess what type of repair or replacement is needed before providing a quote.