Traditional Look, Modern Performance



We strive to offer you the best price for UPVC Sliding Sash Windows however we will beat any like for like genuine like for like quotation.


Sliding Sash Windows don't have to be made from timber.

Our award winning UPVC Sliding Sash Windows are designed to sympathetically replicate the aesthetics of a traditional timber sash window, but with the benefits of modern performance and without the ongoing maintenance. 

With clever design features such as easy clean tilt facility and the option to have the windows colour coated in any colour of your choice, why wouldn't you consider UPVC sliding sash windows for your home.

Sliding sash window internal.jpg


Our UPVC Sliding Sash Windows are designed to replicate traditional timber sliding sash.  You can choose to include heritage features such as run through sash horns, a deep bottom rail, authentic astragal georgian bars and upgraded hardware.  We're also proud to announce that our sliding sash windows can be manufactured with a unique seamless weld making them even closer to their timber ancestors.


Our UPVC Sliding Sash Windows are fitted with 24mm double glazed argon gas filled glass units as standard.  With a soft coat glass and a K glass to the internal pane, there is maximum heat retention when it's required.  With an overall energy rating of 'A+' and a U Value as low as 1.4 W/m2k, the days of single glazed, poor performing sliding sash windows are over.


Our Sliding Sash Windows are installed with a robust and stylish key locking fitch lock and catch which keeps the top and bottom sash securely locked together.  We’re also able to offer a sash restrictor which allows you to leave the window unlocked but limit the opening to a maximum of 100mm, therefore preventing unwanted access.  If you’re looking for the highest level of security then we’re proud to say our sliding sash windows have been tested and approved to secured by design, police approved standard.



Add your own personal finishing touches to your new UPVC Sliding Sash Windows.  You can enjoy a wide choice of furniture colours including Chrome, Satin, Gold, White, Bronze and Graphite.  


Our accessories include auto engaging spring loaded sash restrictors, lift hooks, d-shaped handles and pole eyes.

Camlock set 1.jpg


Don't worry about regular maintenance and repainting, choose a colour that you love and it will last.  Our colour finishes, whether from our standard woodgrain range or from our bespoke painted range, are guaranteed for 10 years. 


Transform your home with a modern anthracite grey, a rustic looking grey oak or a country cottage cream.  Most colours are available in a smooth or a woodgrain finish.

Living Oak Sliding Sash Window.jpg


You can customise your UPVC Sliding Sash Windows, by adding authentic surface mounted glazing bars, modern, clean internal fret bars or keep the glass panes bar free to maximise the light flooding into your home and achieve a contemporary look. 


Windoor Online Limited’s windows are all bespoke, made to measure and designed to your specification which means you can select a glazing bar layout to complement the aesthetics of your home.



Your new replacement UPVC Sliding Sash Windows can be manufactured with double glazed or triple glazed glass units.  We use a range of high-performance glass solutions from Pilkington UK and Saint Gobain.  Our internally soft coated K glass offers excellent thermal insulation as the heat bounces off the glass and back into the internal living space.


In the majority of cases we will add Argon Gas to the double glazed units.  Gas is denser than air, which results in greater energy efficiency and a lower u-value.

If your home has windows that are low to your internal floor level, we will instinctively upgrade your windows to include toughened glass. Toughened glass is achieved by subjecting the unit to a heating and cooling treatment whereby high compressive stresses are set up at the surfaces with balancing tensile stresses in the centre.  It’s primary benefit is that if broken, the glass breaks into none sharp pieces to reduce the risk of being cut by sharp broken glass.

If you’re aiming to improve security or achieve excellent noise reduction, Windoor Online Limited can offer acoustic laminated glass from Pilkington. The desired performance is achieved by combining various thickness of glass with a special polyvinylbutyral interlayer.

For bathrooms, dressing rooms, or perhaps just windows that are overlooked, you can choose from a range of decorative obscured glass.  We offer every pattern available in the Pilkington obscured range.


You can relax as all our sliding sash windows and installation are covered with an 10 year insurance backed guarantee (IBG) with HomePro against defects and malfunctions so you have nothing to worry about.


Contact us today to get your free, no obligation quote for new windows and doors.  Email us, call us or fill out the form below and we'll do the rest.


Tel: 01274 976733

  • Black Facebook Icon
  • Black Twitter Icon
  • Black Instagram Icon

Success! Message received.