When choosing a company to replace your period wooden sash windows, the distinction between a specialist manufacturer-installer and a general fitter might seem minor. In practice, this difference fundamentally affects the quality, consistency, accountability, and ultimately the success of your project. After over 27 years of manufacturing and installing our own bespoke timber sash 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.






