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Replacement Casement Windows

We manufacture and install replacement timber casement windows across London and the South.

All our replacement timber casement windows are individually manufactured in our workshops in Berkshire. There are many different design configurations of wooden casement windows that we are proud to be able to replicate depending on your bespoke requirements. We also have a Classic Range which was developed over many years and covers most period design requirements.

timber casement windows

Timber casement window styles include:

  • Flush casement windows
  • Storm proof casement windows
  • Traditional casement windows
  • Modern designs of casement windows

We are also able to replace casement sashes (the moving parts of the timber casement window) if the frames are still in a good condition.

Timber flush casement windows are a more traditional design style of casement window than storm proof casement windows. Flush casement windows sit flush within the frame, creating a flat surface on the outside. In contrast, storm proof casement windows (sometimes referred to as lipped casement windows) overlap the window frame when closed.

timber casement windows

Timber Casement Windows in Period Properties

At The Sash Window Workshop all our replacement timber windows are designed to add charm and character and be in keeping with your home, while providing modern benefits such as double glazing.  We can manufacture casement windows to suit a range of period properties and listed buildings, including Edwardian, Victorian and Georgian properties.

If your windows are in a good condition we can repair the existing window by carrying out our draught proof and overhaul service.

We also offer a range of other replacement products, including wooden sash windows and external timber doors such as French doors, front doors and sliding doors.

Locations We Operate In

We have extensive experience installing timber windows in period properties across London, Berkshire, Hampshire, Surrey, Oxfordshire, Hertfordshire, Buckinghamshire, Wiltshire, Essex, Kent, West Sussex, East Sussex and Bedfordshire.

We also offer a supply only service for new timber casement windows across the UK.

oak casement bay

Made in Britain

We are proud to manufacture all our wooden casement windows from our workshop in Berkshire. Using the latest technology alongside the skill of our expert craftsmen, they are bespoke, manufactured to meet our customer’s design requirements.

Our casement windows come fully factory finished.  We offer a wide range of glazing, ironmongery and paint / stain finish options to suit your requirements.

Our Materials

We ensure that the materials are of the highest quality.  Our years of experience and knowledge ensure that we use only the best and most durable products, providing you with a high quality performance window.  We are FENSA registered, FSC® Certified and our new casement windows come with a comprehensive guarantee.

The majority of our replacement casement windows are manufactured in AccoyaTM, a durable, sustainably sourced modified wood which comes with a 50 year anti-rot guarantee.

bespoke timber window

New casement windows are glazed in accordance with Building regulations and the relevant BS standards (EN 1279) to offer the best in energy efficiency. We work with a variety of different glass types to suit your specific needs. As standard, most of our new wooden windows are double glazed.  However, we can manufacture single glazed windows to meet listed building requirements if required.

We understand the importance of providing ironmongery that is not only elegant, but also secure, providing a high level of security for your home.

Please note that your building is over 18 metres from the ground, FENSA will not issue a certificate. If you live in a property which is over 18 metres high, you will need to contact your local council to arrange for Local Authority Building Inspectors to certify that the windows comply with building regulations.

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