UPVC Sliding Sash Windows | John Knight Glass

UPVC Sliding Sash Windows

If you are thinking of updating the windows in your property with Sash windows and are concerned about the cost of timber windows, UPVC sash windows could be the perfect choice as they can be a more cost effective solution to purchase and to maintain as they require very little maintenance.

UPVC Sliding Sash Windows

UPVC Sash Window Details

Horn Details

ECOSlide PVC-U sash windows are available in 3 options

  • Without horns.
  • Plant-on Horns.
  • Run-though horns.

Plant-on horn

Plant-on horn


Run-through horn

Run-through horn






Sash Window Styles

Windows to suit all applications, from traditional styles to contemporary designs.

Sash Window Styles

ECOSlide windows are available in a range of popular sash window design styles to provide 21st century modern replacements for original windows, including splayed and 90o box bay-style windows. We can also manufacture bespoke units in eye-catching architectural shapes such as True Arch, Gothic Arch and Swept Head windows. Transom drops are 50/50 split as standard. Other transom drops can be manufactured to order, but the transom drop will be determined by the grid layout.

Other additional design options are available with internal Georgian glazing bars or external Astragal glazing bars.


Tilt & Easy Clean Function

Low maintenance ECOSlide PVC-U sash windows only require a quick wipe down with a damp cloth to keep them looking as good as new. The window sashes feature an inward opening tilt facility to allow easy and safe cleaning of the outside frame and glass from inside the building. This is particularly useful for multi-storey windows or windows positioned in hard to reach places.


Colour & Foil Finishes

ECOSlide sash windows are available in White and Cream solid PVC-U profile colour options.

For a more natural wood effect, our Crystal White, Cream, Golden Oak and Irish Oak foils applied to both outside and inside surfaces give a realistic woodgrain appearance that mimics the grained texture and appearance of an original timber window.

We also offer as standard Colour-on-White options in Chartwell Green, Anthracite Grey, Rosewood, Black Brown, Cream, Golden Oak and Irish Oak. These dual-colour options provide homeowners with customer choice. For example, a characterful external colour can be selected for the external window faces, whilst maintaining a White interior finish to suit internal decoration schemes.


Custom Colours

Spraying and colour matching can give your windows an individualistic look.

An onsite paint shop enables ECOSlide PVC-U sash windows to be spray painted any custom colour to match virtually any RAL code or colour.

This facility allows you to personalise the vertical sash windows and colour co-ordinate them to match the property or suit a homeowner’s specific requirements.

Our optional spray painted finish is applied to the highest standards and will provide an unique and colourful sash window project solution.

UPVC Sash Window Projects

Sash Windows, Heswall

Replacement of all windows throughout this period end terrace property. All original timber sash windows have been replaced with authentic UPVC sash windows, whilst all casements have been replaced with like for like UPVC casement windows.

  • Low maintenance sash windows.
  • A rated energy efficiency.
  • Authentic sash windows with period features.

Click on the image to view the full case study.