sash window refurbishment

Sash Window Refurbishment in London
by Mortice & Green

At Mortice & Green, we provide specialist sash window refurbishment services for period properties across London, helping homeowners restore the beauty, functionality and efficiency of their original timber windows. Established in 1994, our family-run business has over 30 years of experience refurbishing traditional sash windows using time-honoured craftsmanship and high-quality materials. Rather than replacing original windows unnecessarily, we carefully refurbish and service every component, ensuring your sash windows operate smoothly, eliminate draughts and continue protecting your home for decades to come. Every project is carried out by our experienced in-house restorative joiners, guaranteeing exceptional workmanship and a personal level of customer care from start to finish.

A Complete Mechanical Refurbishment for Your Sash Windows

Many original sash windows suffer from years of wear and tear, resulting in windows that stick, rattle, become difficult to open or fail to close properly. Our comprehensive sash window refurbishment service is designed to resolve these issues while preserving the original timber and traditional character of your windows.

Every refurbishment begins with a detailed inspection of the window mechanism before carrying out a full mechanical service. We replace all worn sash cords with durable nylon-core sash cords, service or replace pulley wheels where required and carefully rebalance every sash using the correct counterweights. This ensures the windows glide smoothly and remain safely in position when opened.

We also replace worn staff beads and parting beads with high-quality timber replicas that are pre-painted in our workshop before installation. These incorporate discreet draught-proofing brush seals, dramatically improving insulation while maintaining the authentic appearance of your sash windows.

To complete the refurbishment, we replace worn catches, lifts and restriction bolts with premium-quality solid brass or satin nickel fittings and carefully adjust the meeting rails to ensure every window closes securely and aligns perfectly. The result is a sash window that looks, feels and performs as it should.

Eliminate Draughts and Extend the Life of Your Windows

One of the biggest advantages of professional sash window refurbishment is the significant improvement in comfort and energy efficiency. Original sash windows often develop gaps over time, allowing cold air to enter the property and warm air to escape.

As part of our refurbishment package, we professionally draught proof every window, eliminating over 97% of unwanted draughts while also removing the rattles commonly associated with older sash windows. By carefully aligning and adjusting every component, we ensure each window fits correctly within its frame, creating a much tighter seal without affecting its traditional operation.

Refurbishment not only improves the performance of your windows but also extends their lifespan by addressing mechanical wear before more significant problems develop. In many cases, a professionally refurbished sash window can continue performing reliably for many years, making refurbishment an excellent investment for period homeowners who wish to preserve their original features while improving everyday comfort.

Why Choose Mortice & Green for Sash Window Refurbishment?

Since 1994, Mortice & Green has earned a reputation as one of London’s leading specialists in sash window refurbishment, restoration and repair. Our highly skilled restorative joiners have extensive experience working on Victorian, Georgian and Edwardian properties, as well as listed buildings and homes within conservation areas.

Unlike larger national companies, every quotation is prepared by one of the company proprietors, and every refurbishment is completed by our own dedicated in-house team. We never subcontract work, ensuring complete quality control throughout every project.

Our independent workshop allows us to manufacture bespoke timber components whenever required, helping us preserve original windows rather than replacing them unnecessarily. We only recommend work that is genuinely required and provide detailed written quotations explaining exactly what is included in your refurbishment.

Every sash window refurbishment is backed by our minimum three-year guarantee, giving you complete confidence in the quality of our workmanship. With honest advice, exceptional craftsmanship and over three decades of experience, Mortice & Green remains the trusted choice for sash window refurbishment throughout London.

Areas We Cover for Sash Window Refurbishment

We provide expert sash window refurbishment services across London, restoring traditional timber sash windows in period homes, listed buildings and conservation properties.

Our refurbishment specialists regularly work in:

• Kensington
• Chelsea
• Fulham
• Putney
• Wimbledon
• Hampstead
• Islington
• Hackney
• Notting Hill
• Mayfair
• Belgravia

We also carry out sash window refurbishment projects throughout:

• North London
• South West London
• West London
• North West London
• Central London

Wherever you’re based in Greater London, our experienced team can provide a free site survey, assess the condition of your sash windows and recommend the most suitable refurbishment solution for your property. If your location isn’t listed above, simply contact us and we’ll be happy to confirm whether we cover your area.

How Much Does Sash Window Refurbishment Cost?

The cost of sash window refurbishment depends on the condition of the existing windows and the level of restoration required. Every refurbishment project is tailored to the individual window, ensuring only the work that is genuinely needed is carried out.

As part of our refurbishment service, work may include:

• Replacement of all sash cords with durable nylon-core cords.
• Servicing or replacing pulley wheels.
• Rebalancing both sashes.
• Replacing staff beads and parting beads.
• Installing integrated draught-proofing brush seals.
• Replacing catches, lifts and restriction bolts.
• Adjusting and aligning meeting rails.
• Eliminating rattles and reducing draughts by over 97%.

As a general guide, complete sash window refurbishment typically ranges from £400–£900 per window, depending on the condition and size of the window and any additional repairs required.

We provide free, no-obligation surveys and detailed written quotations, with comprehensive specifications outlining exactly what is included. In most cases, you’ll receive your quotation by email on the same day as your site visit, allowing you to make an informed decision with complete confidence.