The Heritage Directory

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Timber Casement Windows

The timber casement window has been popular since the late 17th century and is one of the most common types of window found on historic buildings. It is important that historic casements are repaired and that new casements are well detailed. You should always contact your local conservation officer before carrying out work to windows on historic buildings or in a conservation area. In the case of listed buildings, double glazing is usually unacceptable, secondary glazing being preferred instead for thermal efficiency.

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Companies supplying goods or services for Timber Casement Windows
Houghtons of York
Derwent Valley Industrial Estate Common Road Dunnington York YO19 5PD
Tel 01904 489193
Houghtons of York are a well established family run business with a wealth of experience specialising in high quality architectural joinery and woodcarving for clients throughout the UK. With workshops based in York we employ a team of highly skilled craftsmen and use traditional methods and materials to produce a broad range of bespoke commissioned work including casement and sash windows, doors, staircases, libraries, panelling, kitchens, building work, fireplaces, oak frames, ecclesiastical joinery, furniture and gates. Our works encompass new build, restoration, conservation, repairs and maintenance and we invite enquiries from York, North Yorkshire and nationwide.
Kirkman Joinery
Unit 6 Marlborough Trading Estate, High Wycombe, Buckinghamshire, HP11 2LB
Tel 01494 461116
Located in High Wycombe and with over 50 years’ industry experience, Kirkman Joinery have worked with both homeowners and businesses alike to provide high quality bespoke timber joinery. At Kirkman Joinery, we specialise in providing a service which runs seamlessly from start to finish, manufacturing and installing a wide range of high quality products which includes windows, doors, staircases and bi-folds.
Lomax+Wood ( Timber Casements )

Tel 01277 353857
Lomax + Wood supply timber sash windows, casements and doors to the commercial and consumer-based heritage markets. Products in the stylish Kensington & Chelsea range of high performance wooden windows and doors are designed in house and are made-to-order. Our conservation single and double glazed box cords and weights or spring balance, sash windows are designed for period properties and conservation areas and coordinate with traditionally detailed flush double glazed casement windows, bi-folding, French doorsets and entrance doors. With a wealth of knowledge and experience, Lomax + Wood would be delighted to help you with your period fenestration requirements.
Merrin Joinery
Unit 16, Junction Road, Maun Valley Industrial Estate, Sutton in Ashfield, Nottinghamshire NG17 5GS
Tel 01623 550436
Merrin Joinery designs, produces and installs bespoke wooden windows, doors and staircases. We work exclusively on historic & listed buildings. Each item is individually made in our workshop to meet the exact requirements of the client. Precisely matching original architectural details.Past commissions have included: Single glazed sash & casement windows, Slim line double glazed windows, Curved windows, Arched door sets, Winding staircases, Joinery for barn conversions. We can supply and install purpose made stone cill's and are experienced in using lime mortar and plaster. Our client base extends throughout the UK.
Mill House Window Workshop ( Sash Windows )
Bendish Farm Bendish Hitchin Hertfordshire SG4 8JD
Tel 07581 137422
Mill House Window Workshop provide a full sash window repair, restoration and draughtproofing service. They can supply windows and doors, single or double glazed, with traditional weights and pulleys and in a selection of high quality timber. New double glazed units can be fitted into the existing rebates of most traditional sash and casement windows. All their windows and doors are made to order and to your exact specifications, with an emphasis on sympathetic restoration with appropriate materials. Established in 2002, they cover Hertfordshire, South Bedfordshire, West Cambridgeshire, East Buckinghamshire and some North London areas.
The Sash Window Workshop Limited
Unit 4, Kiln Lane, Bracknell, Berkshire RG12 1NA
Tel 01344 868668
The Sash Window Workshop specialises in the manufacture and repair of traditional timber windows and doors. They offer an installation service for London and the South, with a supply only service for the rest of the country. With over 20 years of experience, they have refurbished windows in some of London's most iconic historic buildings, including Buckingham Palace. Their bespoke, tailor-made services include: window and door replacement; draught proofing; re-glazing; refurbishment and repair; and double glazing.
Unit 9 Mount Road Ind. Estate Mount Road Feltham TW13 6AR
Timbawood is a specialist manufacturer of double-glazed, traditional timber windows and doors, offering a supply only service to refurbishment contractors and trade installers nationwide, or a full supply and install service to the trade and private clients within the London area and home counties. Products include hardwood sashes, box sash windows, casement windows and doors.
Ventrolla Central Office, Ventrolla House, Crimple Court, Hornbeam Business Park, Harrogate, North Yorkshire, HG2 8PB
Tel 0808 253 6607
Ventrolla are the UK and Ireland market leader in timber sash window and casement window renovation and performance upgrade, offering an alternative to window replacement. Ventrolla offer a two part service that focuses firstly on renovating the existing sash window and then performance upgrading, to improve energy efficiency by eliminating draughts, rattles and dust ingress. The system can be installed into all types of timber windows, including casement windows and sash windows and also timber doors. Ventrolla offer slim double-glazed timber windows and secondary glazing solutions. With over 30 years’ experience and a network of offices throughout the UK and Ireland offer a free, no-obligation survey and quotation.
Mumford & Wood ( Casements ), Tower Business Park, Kelvedon Road, Tiptree, Essex CO5 0LX Telephone 01621 818155 Website:
Refurb-a-Sash , Queens Joinery, Queens Road Twickenham Middlesex TW1 4LJ Telephone 020 8892 1166
Scotts of Thrapston, Bridge Street Thrapston Northamptonshire NN14 4LR England Telephone 01832 732366 Website: