Glass replacement Cambridge - Glazing upgrade

Thermal image of a two-storey house with sash windows Cambridge, highlighting heat loss around windows, roof, and chimney. A small inset photo in visible light appears at the bottom left.

The result: well-insulated windows & doors

At Classic Sash Windows, we specialise in upgrading traditional single-glazed sash windows with slim profile vacuum insulated double glazing – the perfect balance of modern performance and period charm.

If your property is in Cambridge and you want to keep the elegance of your original timber windows while improving energy efficiency, our reglazing service is the ideal solution.

We carefully remove the existing single panes and replace them with ultra-thin, high-performance glass units designed to fit seamlessly into your existing frames.

Why Choose Slim Profile Vacuum Insulated Double Glazing?

  • Exceptional Thermal Performance – Enjoy the warmth and comfort of modern glazing without altering the classic appearance of your windows.

  • Noise Reduction – Reduce outside noise, making your home quieter and more peaceful.

  • Heritage-Friendly – Ideal for listed buildings and conservation areas, meeting planning requirements while improving efficiency.

  • Discreet & Elegant – Slim sightlines preserve the historic look of your sash windows.

Our Process

  1. Assessment – We inspect your existing windows and advise on the most suitable upgrade options.

  2. Careful Removal – Original glass is removed with minimal disturbance to the frame.

  3. Precision Reglazing – Slim profile vacuum insulated units are expertly fitted.

  4. Finishing Touches – We ensure the glazing is sealed, draught-proofed, and ready to perform for years to come.

Whether you’re restoring a Victorian terrace, Edwardian home, or Georgian townhouse, we ensure your windows look authentic while offering the comfort and efficiency of modern glazing.

Upgrade your windows without losing their character – contact us today for a free consultation in Cambridge.

A red brick house with a bay window, white sash windows Cambridge style, a stone window ledge, and a few rubbish bins on the pavement.