JELD-WEN Sliding Sash Windows

The JELD-WEN sliding sash window balances the functionality of modern windows with a traditional aesthetic. Designed with period properties and planning restrictions in mind, these windows are well-suited as original timber window replacements.

JELD-WEN Sliding Sash Windows

JELD-WEN sliding sash windows are an elegant choice which will enhance your property and kerb appeal. The sliding sash windows offer an authentic look which will blend in well with a period home. In fact, JELD-WEN specifically designed the sliding sash window to meet local planning and architectural requirements. With a variety of glazing bar designs, paints, stains, sash horns and hardware, you can choose the finishing touches for your sash window to ensure it complements the style and age of your individual property.

Practical Timber Sliding Sash Windows

JELD-WEN’s timber sliding sash windows are made from engineered softwood, crafted using traditional methods and modern technology for a high quality finish. The premium timber combined with double glazing gives the windows good acoustic insulation, thermal insulation, and a sound U-value. What’s more, you have the choice of either single hung or double hung JELD-WEN windows, depending on how you want your sash windows to operate. 

JELD-WEN windows are all made in the UK from responsibly sourced, FSC certified timber. This allows you peace of mind over the sustainability of your windows, as well as the knowledge that they meet all UK building standards and regulations. With generous guarantees across the JELD-WEN range, you can be confident in the quality and longevity of your new windows.

If you’re interested in JELD-WEN sliding sash windows or any other windows in our JELD-WEN range, get in touch with our friendly team. We’re happy to help with any enquiries and answer any questions you may have.

Free & Fast Delivery to the UK Mainland

Free and fast delivery is available on our timber sliding sash windows UK wide (mainland). With options to suit any budget and any project, get a quick quote and order your wooden sash windows online today!

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Why Choose Sliding Sash Windows?

40 Year Guarantee

40 year rot and fungal guarantee means that you can be confident you’re making a solid, worthwhile investment in your home.

Classic Style

Enjoy classic Victorian and Georgian style with modern performance. Sash windows can be used to create a classic look for your home.

Thermal Efficiency

Our range of sliding sash windows will help improve your home’s thermal efficiency, with different material and glazing options available.

Our Frame Styles

Product Information

Available in the following styles:

  • Non-Bar
  • Victorian Bar *
  • All Bar *
  • Marginal Bar *
  • Vertical Bar *
  • Marginal Bar †
  • Vertical Bar †
  • Semi-Circular Feature Windows

* Simulated Divided Lights
† Traditional True Divided Lights

With a healthy range of design options, there’s loads of ways to employ sliding sash windows into your home design, with varying effect. Uphold traditional, classic style with modern, efficient performance.


  • U-value ranging from 1.4W/m2K
  • Acoustic performance rating according to BS EN717-1:1997rw(C;Ctr)=36(-1;-3) dB based on optimum performance
  • Exposure rating of 2000Pa
  • Air Permeability class 2
  • Achieves BS6375 Part 1 2004 windows and doors performance
  • Achieves BS6375 Part 2 1987 operation and strength performance
  • Available tested to Secured by Design scheme standards -BS7950 certification held

Our unique range of timber windows feature stepped sashes for improved performance yet retains traditional sight lines. We supply them fully glazed with 24mm Low E insulating glass units.

Ventilation is achieved through a concealed ventilator (s) in the head section. All windows have extended horns on the top sash and flush-to-frame sills as standard. With large windows we may supply the sashes separately – to make frame fixing and handling easier, and to reduce the risk of damage.

We supply all vertical sliding sash windows with concealed flush-fitting ventilators as standard in white or brown. Windows less than 488mm wide are not fitted with ventilators. 8000mm2 geometric are supplied fitted on windows 860mm and wider, 4000m2 or below that size down to 488mm wide.

A “no vent” option is also available please ring our sales team on 01205 363999  

Have a Question?

If you have any queries or questions to ask about our range of sliding sash windows, get in touch today for our expert advice and help. We’d be happy to help!


01205 363 999