UPVC PVCU Casement Sash Windows in London
timber sash windows

UPVC/PVCU Sash Windows

People tend to have a common misconception of  PVCU windows. What springs to mind? Thick frames, discolouration and aesthetically cheap.  Over the recent years we have thought of everything when it comes to design to mimic timber sash windows as near as possible. Our PVCU sash window is leading in the market; you will not find a more reliable example anywhere else. We have a number of ranges, some perfect for a modern new builds, others that have been specifically designed and have been accepted in strict conservation areas across London & Surrey.

Want to know whether it’s UPVC, PVCU or just plain old PVC? Read our blog post here.

All our PVCU sash ranges operate with a spiral balance mechanism. A low maintenance, modern method of operation. For extra security and child safety we install Vent or Angel locks as standard.

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