UPVC PVCU Casement Sash Windows in London
Sash Windows Bromley

The Leading Installer of Bespoke UPVC/PVCU Sash Windows in London

Low Maintenance – Energy-Efficient – Secure – Durable

We are Sash Windows London Ltd, a family-run company dedicated to installing UPVC windows specifically designed to suit our customer’s needs.

“I can’t recommend Sash Windows enough! The consultation was concise and clear and the install was swift, easy and effortless.”

Marc Benoit, South East London

Call Us Now for a FREE Survey: 020 8397 8666

Contemporary Sliding Sash

Virtually maintenance free, our PVCU windows reduce noise intrusion and add insulation value performance. With sculptured frame, bead, Georgian bars, wood grain effects and run through horns, you can achieve the appearance of traditional box sash windows.

Our sliding sashes offer very simple operation of two sashes within an outer frame that work independently of each other on a balance mechanism designed to hold them at any height with an ingenious design feature allowing the sashes to tilt from the inside to facilitate safe easy cleaning. Structural strength is enhanced through the use of steel through the internal chambers of the profile and to further increase stability and strength.

Heritage Sliding Sash

Our ultimate heritage range is designed to replicate traditional timber box sash windows.

Design features such as; a deep bottom rail, run-through sash horns and authentic, external putty lines, all add to the attention to detail that makes the ultimate the most authentic PVCU sash window on the market. The timber alternative sash window is manufactured with mechanical joints to help closely replicate an original design. In fact our ultimate heritage range has been accepted in sensitive conservation areas where maintaining traditional aesthetics is crucial.


  • 10 years on PVCU
  • 30 years on timber
  • 10 years on glazing, ironmongery and seals

Benefits of energy efficient windows

  • Smaller energy bills
  • Smaller carbon footprint
  • More comfortable home: energy-efficient glazing reduces heat Peace and quiet: as well as keeping the heat in, energy efficient