The timber alternative sash window

Bygone Sash Windows offer the best timber alternative sash window with the features of a traditional sash. Crafted from high-quality uPVC and designed to replicate original box sash windows, they feature authentic detailing such as deep bottom rails, run-through sash horns, and mechanically jointed frames. Bygone sash windows are ideal for heritage properties or homes in conservation areas, combining period-correct styling with exceptional thermal efficiency, low maintenance, and enhanced security. With optional Georgian bars and a wide choice of woodgrain finishes, they provide a true timber look—without compromise.

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