Timbawood manufactures and installs the finest double glazed sash windows for period, conservation and listed properties.

As specialists in authentic timber sash windows, our double glazed windows are handmade to measure at our West London workshops and combine elegant, slender period design with the highest thermal, acoustic and security benefits.

As well as full double glazed sash windows, we also offer bespoke single or double glazed sashes fitted to the existing frames, which preserves more of the original architecture and helps to reduce cost.

Offering a wide range of the finest timbers, glazing and hardware, we are able to exact-match existing details such as mouldings and frame depths, to preserve the original character of your property.

With Timbawood sash windows you can always expect:

  • Choice of the finest stable timbers including Accoya, Sapele and Oak
  • Specialist glazing options including acoustic glass, laminated security glass, restoration glass and slimline double glazing that looks just like single glazing
  • Choice of profiles, horns and mouldings to match your existing windows
  • High quality hardware – High security fasteners, locks and restrictors 
  • Full factory spray finish with high performance microporous paint
  • Full perimeter draught proofing
  • Full design, supply and install service

Call us on 0208 893 4889 to arrange a free survey, quotation, or to visit our workshops and showroom to see the quality of our windows being made for yourself.

We serve London and the Home Counties with lead times of 5-6 weeks. 



As specialists in period, conservation and listed properties, our double glazed sash windows have been approved for listed and conservation properties by planning officers and architects throughout London and the South East.

Our listed/ conservation sash windows are known for their slim section sizes and glazing bars, in keeping with the traditional style of Georgian and Victorian architecture. We use slimline double glazing from as slim as 11mm which looks just like single glazing with all the insulation benefits of regular double glazing.

Timbawood offers three proven ranges of high specification sash windows, depending on your budget and the requirements of the property:

  • Heritage Range – exact-match windows for listed buildings and stringent conservation areas
  • Conservation Range – for properties in conservation areas and homes of distinction
  • Traditional Range – for period and modern properties

Call us on 0208 893 4889 to find out more about our ranges or to arrange a free survey or quotation.

Call us for our latest offers:

0208 893 4889

To arrange a free survey or quotation, please get in touch:


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