The London Sash Window Company
Sash window replacement and repair across London
About The London Sash Window Company
The London Sash Window Company specialises in timber sash windows for London homes, including period properties and listed buildings. It offers full window replacement, double-glazed sash upgrades, repairs and overhauls, draught proofing and aftercare. Bespoke windows are measured to suit each home.
The company says it was established in 2006 and provides a free consultation and survey before preparing a detailed quotation. Its process includes discussing materials and options, confirming measurements and arranging installation. The team aims to complete projects with minimal disruption.
All sash window services are covered by a 10-year guarantee, which the company says is insurance-backed and underwritten by Lloyd’s of London. It also provides maintenance advice and serves customers across London.
Services
- Bespoke Windows & Doors
- Door Fitting
- Window Installation & Double Glazing
- Window Repair
- Soundproofing
- Window Shutters
Sash windows
- Full sash window replacement
- Double-glazed sash upgrades
- Sash window repairs and overhauls
- Draught proofing
Other windows and doors
- Casement windows
- Sash window shutters
- French doors
- Secondary glazing
What their website says about each service
- Bespoke Windows & Doors
“Our team at The London Sash Window Company provides expertly crafted timber sash windows in London for your home.”
- Door Fitting
“We offer expert installation, traditional or modern, including aluminium or glazed options for your windows.”
- Window Installation & Double Glazing
“A partial sash window replacement provides new double-glazed sashes—the moving parts of your window.”
- Window Repair
“Whether you need minor repairs like fixing sash window cords or a complete overhaul, we can help.”
- Soundproofing
“This process can soundproof and draught-proof your home, preventing rattling and cold air.”
- Window Shutters
“Sash window shutters”