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 are finished to the highest standard, offering an authentic look which will blend in well with a period home. In fact, JELD-WEN specifically designed these timber sash windows to meet architectural and local planning 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. For a traditional look, you can choose between glazing bar designs – including Victorian bar, all bar, marginal bar and vertical bar. Our sash windows come fully finished with a high quality paint finish which also helps protect against fungal attack. With a dual colour finish available and the choice of any RAL colour, you can truly personalise your new windows.

Practical Timber Sliding Sash Windows

All our windows from JELD-WEN are manufactured from premium, responsibly sourced, FSC certified timber and are available in standard sizes and made to measure. Manufactured using traditional methods and modern technology, the sliding sash style features stepped sashes which are fully weather stripped for improved performance. The timber windows are double glazed with low-E glass as standard which offers good thermal efficiency, acoustic insulation and a sound U-value.

JELD-WEN’s sliding sash windows are supplied with secure hardware. However, if you are looking for a sash window which offers enhanced security whilst maintaining an authentic period look, you can opt for Secured by Design or Approved Document Q certified windows. What’s more, you have the choice of either single hung or double hung windows, depending on how you want your sash windows to operate. 

All JELD-WEN windows are made in the UK and meet all building regulations and UK standards. With generous guarantees across the JELD-WEN brand 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

  • Materials: engineered softwood
  • Bar designs: non-bar, Victorian bar, all bar, marginal bar, vertical bar, semi-circular feature windows
  • Sash horns: available
  • Colours: any RAL colour available
  • Hardware options: polished chrome standard, also white, black, satin chrome, bronze, gold, antique black
  • Security options: Secured by Design optional, Approved Document Q/PAS 24 certification optional
  • Ventilation: surface mounted vents as standard


  • Window sizes: made to measure
  • U values: up to 1.4W/M2K
  • Window energy rating: B rated (BFRC)
  • Glazing options: double glazing, 24mm Low-E insulating
  • Acoustic performance: up to 31Db
  • Air permeability class: class 2
  • Exposure rating: 2000pa
  • Sill size range: 168mm standard, available in 196mm and 225mm also
  • Achieves BS6375 Part 1 2004 windows and doors performance
  • Achieves BS6375 Part 2 1987 operation and strength performance

Our JELD-WEN range of timber windows feature stepped sashes for improved performance whilst retaining traditional sight lines. All windows have extended horns on the top sash. With large windows we may supply the sashes separately, to make frame fixing and handling easier, and to reduce the risk of damage.

Ventilation is achieved through a ventilator in the head section. 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