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London Box Sash Windows is a family-run business that has been specializing in high-quality timber sash windows in London for over 40 years. We take pride in preserving the timeless elegance and craftsmanship of traditional sash windows, while incorporating modern functionalities and exceptional engineering. Our skilled artisans use only the finest materials, and our wooden windows are built to the highest standards.

Our Story

Our story began in 1980 when Engineer John Ellis founded our company with a passion for woodwork. He used his knowledge and experience to create high-quality double-glazed timber sash windows and doors. Over the years, we have grown, but we remain committed to the same high standards of excellence. We are proud to be a locally made, family-run business that reduces our environmental impact by installing 95% of our sash windows within 10 miles of our London workshop.

Our Services

At London Box Sash Windows, we offer a wide range of services, including bespoke double-glazed sash window design, engineering, and installation. Our expert craftsmen use only the finest materials to create windows that are built to last. We provide exceptional engineering and service to our customers, and our reputation for craftsmanship and quality is second to none. Whether you're looking for traditional sash windows or modern designs, we have a wide range of styles and finishes to choose from.

Our Portfolio

We invite you to browse our portfolio to discover the quality and craftsmanship of our timber window projects in London and surrounding areas. We are proud members of Which? Trusted Traders and are committed to providing our customers with the best possible experience.

Reviews (109)
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Positive: The reviewers praised the exceptional customer service, professionalism, and quality of windows provided by London Box Sash Windows.

Installation Experience

The reviewers were extremely satisfied with the installation experience provided by London Box Sash Windows. They praised the professionalism, responsiveness, and punctuality of the team. The installation process was efficient, and the reviewers appreciated the attention to detail and tidiness of the installers.

Pre-Installation Process

The reviewers were impressed with the pre-installation process, which included detailed on-site discussions, personalized service, and careful consideration of their specific needs. The company provided detailed specifications and estimates, and the reviewers appreciated the thoroughness of the pre-installation surveys.

Quality of Windows

The reviewers were thrilled with the quality of the windows installed by London Box Sash Windows. They praised the authenticity of the reproduction Victorian windows, the detailed craftsmanship, and the overall finish. The windows have made a significant difference in the comfort and energy efficiency of their homes.

Customer Service

The reviewers praised the exceptional customer service provided by London Box Sash Windows. They appreciated the politeness, informativeness, and helpfulness of the team throughout the entire process.