uPVC Sliding Sash Windows

uPVC sash windows on a traditional houseTraditional sliding sash windows were typically made of timber, difficult to maintain and generally reserved for installation in period style properties. However, With modern uPVC innovations, we are able to supply attractive modern sash windows which replicate the aesthetics of timber whilst offering the performance benefits of uPVC materials and innovative production techniques.

Authentic, attractive sliding sash window design

Keepout sash windows are manufactured to maintain the traditional proportions of authentic sash windows, sporting classical features including sculptured Georgian bars, run through sash horns, and traditional decorative hardware.

Uncompromised functionality

All sash windows from Keepout are fitted with robust, high quality balances. This means that your sash window will offer you a smooth, consistent operation which has been tested through multiple cycles – gone are the days of stiff, rattling old timber sash windows!

Safety and aesthetics

Featuring low line beads and gasket seals, our uPVC sash windows also offer improved sight lines, meaning that there’s no compromise on aesthetics compared with timber alternatives. Sash windows from Keepout are also installed with a number of functional hardware options, including child safety restrictors for added safety. These window restrictors also limit the opening distance of the sash which helps to enhance the security of your house by reducing the risk of unwanted intrusion.

Easy to maintain & energy efficient

Made of modern uPVC, Keepout sliding sash windows are much easier to maintain than traditional box timber sash alternatives. Our windows need only the occasional wipe down to keep them looking like new, and with tilting upper and lower sashes, they’re a breeze to clean – and can even be cleaned from inside!

With energy efficient glass and modern internal balances, there’s no risk of the draughts and rattles traditionally associated with sliding sash windows. Keepout uPVC sash windows not only enhance your home’s aesthetics, but also its energy efficiency – helping save you money on your heating bills. Like our other window styles, they’re capable of achieving an “A” Window Energy Rating (WER) – an efficiency scale running from A – G, with “A” being the most efficient.

Sash Window Photos

Sliding sash upvc window externalSliding sash window - internal viewSash window hardware close upVertical sliding sash window with georgian barsWhite upvc sliding sash window with mock hornsDouble glazed upvc sliding sash windows

Colour Options

Sash windows in colours and styles to suit all homes

Whether you live in a terraced house or stately period home, Keepout vertical sliding sash windows ensure that your property retains its original character and charm. They are available with a wide range of styles, hardware and colours, including Irish Oak and other woodgrain effects, through to solid contemporary colours such as cream.

Woodgrain Brilliant White colour option

Brilliant White

Rustic Cherry window colour

Rustic Cherry

Woodgrain white colour option


Mahogany colour option


Irish oak colour

Irish Oak

Grey window colour


Golden oak option

Golden Oak

Green window colour option


Deep Red colour option

Deep Red

Cream window colour


Cherrywood colour


Chartwell Green colour option

Chartwell Green

Black/brown colour


Blue colour option


AnTeak colour


Disclaimer: Colours may appear different across multiple devices/computers. For a colour swatch please contact Keepout.

Glazing options

Energy efficient glazing options

Choose from a range of high performance glazing to enhance your new windows and doors. We offer a fantastic selection, in addition to double and triple glazed units (the latter of which is offered as standard). All options are energy efficient, easy to maintain and will improve the overall look of your home

Toughened & Safety glass

Add strength and reduce the likelihood of damage, whether by accident or due to breaches of security.

Solar Control & Low E glass

Reduce heating with energy efficient glazing, including options from glazing market leaders Pilkington – these latest designs use argon gas and warm edge spacer bars for increased insulation. Our Solar Control glass from Pilkington also helps your conservatory stay warm in the winter but cooler in the summer.

Self-Cleaning glass

Make maintenance concerns a thing of the past with glazing that breaks down dirt for a cleaner look all year round.

Decorative & Patterned

Reflect your personality in detailed glazing and create a style suited to you – whether an overall pattern, a coloured feature or obscure glass to enhance privacy

Stippolyte textured glass option


Pelerine textured glass option


Taffeta textured glass option


Oak textured glass option


Minster textured glass option


Florielle textured glass option


Mayflower textured glass option


Everglade textured glass option


Digital textured glass option


Contora textured glass option


Charcoal textured glass option


Chantilly textured glass option


Satin textured glass option