Timber Sash Windows London | Bespoke | Hand-Crafted
Timber Sash Windows

Bespoke Timber Sash Windows

Heritage Designs – Energy-Efficient – Sustainable Timber 

We are Sash Windows London Ltd, a family-run sash window company. We are specialists in window installations that not only look the part, but will stand the test of time.

“3 x timber sashes, 1 x timber casement bay a job well done, efficiently professionally results in ultimate customer satisfaction.”

Mr Forsyth, West London

Call Us Now for a FREE Survey: 020 3613 1753

Spiral Balance

Spiral balanced windows were introduced back in the 80’s as an alternative more economical method of operation. Sashes are fixed to a spring tension spiral and operate on friction. Although this method got off to a shady start they have been vastly improved over the years and have superseeded cord and weight as the preferred mechanism. 

This modern day alternative of the classic box sash window reproduces the original charm and character of English sash windows and incorporates all the traditional features of an original box sash window with a modern method of operation.

Cord & Weights

The Sliding Sash Cords & Weights window is a vertical sliding sash, incorporating a traditional pulleys and weights lifting system. The Cords & Weights design utilises a heavy weight nylon cord on self-lubricating wheels to operate the window. This profile is particularly suited to stone or brick new build mansions and prestigious refurbishments. Our Cords & Weights Sliding Sash window ensures the traditional character and charm of a period building is maintained, whilst incorporating the latest advances in timber window technologies, security and performance for 21st century living.


  • 30 year guarantee on timber
  • 10 year guarantee on a paint finish
  • Smaller energy bills and carbon footprint


  • Traditional: based on the design most popularly incorporated in Victorian and Georgian properties
  • Contemporary: simplified version of the traditional window, with slicker lines and less detailing