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Here at GT Glazing we have married the vintage charm of sliding sash windows with the modern expectancy of leading thermal efficiency.

At GT Glazing, we pride ourselves on using the highest-quality hardware to craft hand-built PVCU windows that rival traditional timber counterparts. Our advanced operating mechanisms ensure a seamless transition, making it challenging to distinguish between our PVCU windows and timber alternatives.

Introducing our latest sash window range, pushing boundaries with specially designed steels that allow for expansive window sizes up to 1600mm by 3000mm. Robust side tracks and cross-bars maintain the window's squareness, guaranteeing effortless sliding on every occasion. Security is a top priority, with locks adhering to the Police's Secured By Design standard. An aluminum security bar further fortifies the window, blocking tracks to prevent leverage.

The outcome is a stunning, durable sliding sash window that, until recently, was considered a premium offering. Our latest products redefine the market, delivering exceptional quality without the premium price tag.


Experience excellence with GT Glazing – where innovation meets affordability, transforming your windows into a seamless blend of elegance and strength.

Our sash windows are uniquely designed with a period look and feel, so they preserve your property’s historic charm whilst enjoying all the perks of a modern window.
Our sash windows feature key-lockable traditional style fitch locks, as well as additional security features to ensure they are safe, secure and reliable.
There is a comprehensive 10 year guarantee on the whole window and installation on all our sash windows, and our timber sash windows come with a 30 year guarantee against rot and fungus.
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