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Sash Window Refurbishments in London

We restore original timber sash windows to full working order while retaining their charm. From draught-proofing and cord replacements to double-glazing retrofits, our specialists deliver a neat, efficient service that improves warmth, comfort, and security without compromising character.

Heritage-safe

Timber Repairs

Draught-Proofing

Double Glazing Upgrades

Free inspection & written quote

We’ll inspect your sash windows, photograph areas of concern, and provide a clear quote with honest recommendations.

Why Refurbish Your Sash Windows?

Over time, sash windows can stick, rattle, and let in draughts. Refurbishment allows you to restore performance and efficiency while maintaining the original timber and aesthetic. Our team works carefully to retain as much of the existing frame and glass as possible.

Our Sash Window Refurbishment Process

Inspection & Assessment: We inspect frame condition, paint layers, cords, and glazing.
Careful Removal: Sashes are removed safely and marked for accurate refitting.
Cord Replacement: New sash cords or chains are installed using robust pulleys and weights.
Draught-Proofing: Discreet brush seals fitted to reduce air leaks and improve energy efficiency.
Timber Repairs: Decayed areas treated and spliced with matching wood.
Repaint & Finish: Sanded, primed, and painted using high-quality exterior coatings.
Reinstallation & Balance Check: Sashes reinstalled, balanced, and tested for smooth operation.

Benefits of Professional Refurbishment

Improved Insulation & Comfort

Draught-proofing and balanced sashes keep your home warmer in winter and cooler in summer.

Smooth & Quiet Operation

Refurbished pulleys and cords ensure the windows glide effortlessly with no sticking or rattling.

Preserves Heritage Character

Our refurbishment approach retains original features and period detailing, perfect for listed or conservation homes.

Cost-Effective Renewal

Refurbishing existing sash windows is often far cheaper than full replacements while achieving the same visual impact.

Long-Term Protection

High-quality paints and durable materials protect timber frames against rot, decay, and weathering for years to come.

Ready to restore your sash windows?

Contact our team for a free inspection and expert advice. We’ll check your windows, provide clear recommendations, and help you choose the right approach for your home.

Typical Work Includes:

Full sash cord replacement
Timber splicing and rot treatment
Draught-proofing installation
Slimline double-glazing retrofits
Hardware upgrades (locks, lifts, and catches)

Popular areas we cover

Kensington • Chelsea • Fulham • Hammersmith • Notting Hill • Holland Park • Hampstead • Belsize Park • Golders Green • Totteridge • Battersea • Clapham • Brixton • Westminster • Southwark • Putney • Richmond • Barnes • Twickenham • Kew • Wimbledon • Esher • Chigwell • Buckhurst Hill

Related Services

Ready for a quote?

Share a postcode and a photo — we’ll advise quickly.

Customer Reviews

Andrew did an excellent job replacing our roof. He was professional, reliable, and kept us updated throughout the process. The work was completed on time, with great attention to detail, and the site was left spotless. Highly recommend Andrew for anyone needing roofing work.

Myles Robinson, NW11

I have been using Andrew's services for over 15 years and he is truly a roofing specialist whether it's a small repair or a brand new roof installation, he has always delivered his work on time, on budget and to the highest quality.Highly recommend his services!

Attila Horvath, SW6

I have used Bernard Andrews Roofing Ltd on a number of occasions for various roofing and guttering problems and have always found them to be brilliant! Andrew who I dealt with was very thorough, patient and totally professional

Sarah McDonald, WC1H

Sash Window FAQs

How long does a sash window refurbishment take?

Typically 1–3 days depending on condition and number of windows.

Can you add double glazing to my existing sash windows?

Yes, we can retrofit slimline double glazing where the frames allow, keeping the period look intact.

Do you work on listed buildings?

Absolutely. We follow heritage-approved methods and liaise with local conservation officers when needed.

Will the windows look brand new?

The goal is to retain original character while improving function. Once repainted, they’ll look refreshed and elegant.

Restore your sash windows with expert care

Bring back the beauty and performance of your sash windows. Book a free inspection today for a clear quote and honest advice.