Traditional timber box sash windows are marvels of Georgian and Victorian engineering that have graced British homes for over 400 years. These elegant, functional windows consist of numerous precisely crafted components working in harmony to create smooth operation and lasting durability. Understanding the anatomy of a sash window is essential whether you’re restoring period windows,…
Here at the Specialist in Traditional Sash Windows, we have over 200 years of experience installing new and replacement wood sash windows for customers across London, the Home Counties, and the South East. All our wooden sash windows and box frames are built to order from our workshop in Guildford, Surrey, and installed by our own specialist fitters.
As part of our commitment to sustainable production, we exclusively use high-quality timber for our double-glazed sash windows. We NEVER use uPVC plastic for our frames – the manufacture of which uses 8 times more energy than timber windows. In particular, we specialise in the use of Accoya for our sash windows: a beautiful, natural wood that is vastly more durable and sustainable than plastic alternatives.
Our work is fully guaranteed, with up to a 50-year timber warranty against rot for added peace of mind.






