There's a reason sash windows have defined British streets for over 300 years. Their elegant vertical proportions, generous glazing areas, and quietly confident simplicity suit our architecture like nothing else. The problem has always been the upkeep: the swelling, the rattling, the flaking paint, the draughts that find their way through no matter what you do.
Ecologic uPVC sliding sash windows solve that problem completely. Built on the VEKA sliding sash system and A-rated as standard, they replicate the look and feel of original Georgian and Victorian sash windows with an accuracy that genuinely surprises people, while delivering the thermal performance, security, and low maintenance that modern homes demand.
What is a uPVC Sliding Sash Window?
A sliding sash window consists of two glazed panels, known as sashes, that slide vertically past one another within a single frame. It's the defining feature of Georgian, Victorian, and Edwardian architecture across the UK, and the window style that gives period streetscapes their distinctive character.
Modern uPVC sliding sash windows replicate this traditional design using precision-engineered uPVC profiles rather than timber. The result is a window that looks the part from the street, performs far beyond what any original sash could manage, and asks almost nothing of you in return.
The VEKA Sliding Sash System: Authenticity in the Details
It's the details that separate a genuinely convincing uPVC sash from a generic replacement, and the VEKA system gets them right.
Run-through or clip-on sash horns accurately replicate the curved joinery detail at the base of the upper sash that gives a traditional sliding sash its characteristic silhouette. A slim meeting rail and low-line beads preserve the refined sightlines of the original, maximising the glazed area and keeping the proportions authentically period. Decorative glazing bars are available for Georgian-style multi-pane detailing, and galvanised steel reinforcing is incorporated where structural integrity demands it.
The result is a window that reads as period-authentic from the street rather than an obvious modern approximation.
Vertical and Horizontal Sliding Sash Windows
Vertical sliding sash windows are the traditional British standard, with the sashes sliding up and down in their channels to open. They're the natural choice for Georgian, Victorian, and Edwardian properties where the vertical proportions of the original windows are part of the building's character.
Horizontal sliding sash windows offer a contemporary alternative suited to modern extensions, wider openings, and properties where a cleaner, more streamlined look is preferred. Both styles share the same VEKA construction, A-rated energy performance, and a full range of colour finishes.
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