We specialise in the design and manufacture of bespoke box sash windows in London, handcrafted from premium quality timber and expertly tailored by our skilled joiners to enhance your property’s character. Our timber sash windows are custom-built to deliver timeless style, durability, and high performance, whether you require an authentic sash window replacement for a period property or a new installation for a traditional or contemporary home.

Our box sash windows are ideal for restoring original features while improving natural light, ventilation, and overall comfort. We offer full sash window replacement services, including upgrades to modern double glazed sash windows that significantly improve thermal efficiency, reduce noise, and enhance security without compromising the classic appearance.

Each window is manufactured using traditional joinery techniques combined with modern glazing technology, ensuring smooth operation and long-lasting performance. Our experienced installation team completes every project to the highest standard, providing reliable and professional sash window installation across London.

We offer a range of glazing options, including single glazing for heritage properties and energy-efficient double glazing with slimline profiles that preserve the original aesthetic. Every detail can be fully customised, from timber selection and mouldings to ironmongery and finishes, ensuring your bespoke sash windows perfectly match your home.

Our bespoke box sash windows service includes:

• Fully personalised sash window design and joinery
• Complete sash window replacement and installation services
• Durable Accoya® timber with up to 50 years lifespan or FSC-certified timber alternatives
• Double glazed sash windows and slimline glazing options for improved energy efficiency and noise reduction
• Traditional single glazing options for listed and period properties
• High-security locks and premium ironmongery for added safety
• Matching key systems for everyday convenience
• Custom mouldings, glazing bars, panels, and paint finishes
• Factory-applied spray paint for a smooth, durable, low-maintenance finish
• Comprehensive draught-proofing and weather sealing for year-round performance

We proudly serve clients across South, West, and Central London, including:
Clapham Junction, Clapham Common, Battersea, Chelsea, Fulham, Putney, Wandsworth, Islington, Kensington, Richmond, Dulwich, Chiswick, and surrounding London areas.