Bathroom with light beige walls light grey roller blinds and white windows

uPVC Sash Windows

Q: Double Glazing

Double GlazingDouble-glazed windows comprise of two panes of glass that are separated by a spacer bar. The layer of air or gas sandwiched between the panes provides an insulation barrier against noise and heat loss, helping you to maintain a warmer, quieter home.Read more >

Q: Obscure Glass

ObscureA range of patterns available with different levels of privacy to suit your needs. Ideal for bathrooms bedrooms or anywhere else you want privacy.Read more >

Q: Decorative Glass

Decorative GlassManufactured in a variety of ways to give a wide choice of patterns, textures and colours, decorative glass effects can be created on double glazing window panels by silvering, tinting, acid-etching or applying ceramic paints. ecorative glass looks beautiful in top hung fan lights (the top sashes of casement windows), as well as feature windows in halls and stairwells.

Q: Toughened Glass

ToughenedDesigned and toughened to shatter into fragments if shattered for enhanced safety. Regulations dictate when this must be used but can be installed anywhere. Safety glass required below or partly below 1500mm for doors and side-panels within or partly within 300mm of a door and below or partly below 800mm for windows.Read more >

Q: Security Laminated Glass

Security Laminated GlassEverest’s 6.4mm & 6.8mm laminated security glass surpasses every security standard on glass with an extra layer of laminate for added security. Laminated glass offers significant performance benefits over non-laminated glass. The layer inthe centre is made from PVB, polyvinyl butyral.Read more >

Q: Leaded Glass

LeadedStylish strips of lead are a purely visual benefit that can be added to your window in order to make it more aesthetically pleasing. There are a range of leaded glass options that suit both modern and traditional houses, including square and diamond designs.

Q: Georgian Bars

Georgian BarsThe perfect solution for traditional or conservation properties, Georgian bars visually divide the glazing units into smaller panes of glass.Everest Internal Georgian bars (only available on uPVC sash) are fitted within the sealed unit, between the panes of glass for easy cleaning.External Georgian bars are fitted to the outside of the glazed unit, standing proud of the glass for a touch of authenticity.

uPVC Sliding Sash With Woodgrain Finish

The classic window for period homes
Easy to maintain with no need to paint
Sashes tilt inwards for easy cleaning
Smooth running mechanism

uPVC Sash Windows from Everest

Everest uPVC sliding sash windows are the perfect choice for period homes as they retain the classic look and beauty of a Georgian, Edwardian or Victorian property, but offer the benefits of a uPVC window. They can also add a touch of style to a contemporary home by adding a traditional edge. But the real beauty of an Everest uPVC sash window is the opportunity to benefit from all the style of a traditional window with all the modern enhancements from the latest window technology - smooth running, no painting and industry-leading security.

uPVC Sash Windows Options

Everest uPVC sash windows are made completely bespoke for you, with a wide range of options and colours to choose from.

Sash window colours

Our windows are available in a beautiful range of colours including uPVC woodgrain finishes, which look like real wood, but without any of the maintenance issues.

The single colour frames are the same colour inside and outside. On dual colour options the frame is white inside with a second shade on the exterior, in keeping with both the character of your property and inside décor.

White

White woodgrain

Cream Woodgrain

Dark navy blue and white material sample

Anthracite Grey & White Woodgrain

uPVC sash window furniture

For the perfect finishing touch, we offer classic sash window furniture such as sash lifts and fitch locks, all offering flawless operation and outstanding quality.

Shiny chrome window fastener on Everest conservatory window

Fitch Lock

Chrome window handle on white Everest conservatory

Lift Hook

Shiny chrome window fastener on Everest conservatory

Sash uPVC hardware - Easy Clean Latch

Black handle on Everest conservatory window

Sash Restrictor

Gold

Chrome

White

Double Glazing

Double Glazing
Double-glazed windows comprise of two panes of glass that are separated by a spacer bar. The layer of air or gas sandwiched between the panes provides an insulation barrier against noise and heat loss, helping you to maintain a warmer, quieter home.
Read more >

Obscure Glass

Obscure
A range of patterns available with different levels of privacy to suit your needs. Ideal for bathrooms bedrooms or anywhere else you want privacy.
Read more >

Decorative Glass

Decorative Glass
Manufactured in a variety of ways to give a wide choice of patterns, textures and colours, decorative glass effects can be created on double glazing window panels by silvering, tinting, acid-etching or applying ceramic paints. ecorative glass looks beautiful in top hung fan lights (the top sashes of casement windows), as well as feature windows in halls and stairwells.

Toughened Glass

Toughened
Designed and toughened to shatter into fragments if shattered for enhanced safety. Regulations dictate when this must be used but can be installed anywhere. Safety glass required below or partly below 1500mm for doors and side-panels within or partly within 300mm of a door and below or partly below 800mm for windows.
Read more >

Security Laminated Glass

Security Laminated Glass
Everest’s 6.4mm & 6.8mm laminated security glass surpasses every security standard on glass with an extra layer of laminate for added security. Laminated glass offers significant performance benefits over non-laminated glass. The layer inthe centre is made from PVB, polyvinyl butyral.
Read more >

Leaded Glass

Leaded
Stylish strips of lead are a purely visual benefit that can be added to your window in order to make it more aesthetically pleasing. There are a range of leaded glass options that suit both modern and traditional houses, including square and diamond designs.

Georgian Bars

Georgian Bars
The perfect solution for traditional or conservation properties, Georgian bars visually divide the glazing units into smaller panes of glass.

Everest Internal Georgian bars (only available on uPVC sash) are fitted within the sealed unit, between the panes of glass for easy cleaning.

External Georgian bars are fitted to the outside of the glazed unit, standing proud of the glass for a touch of authenticity.

uPVC sash window extras

Sash horns

On the underside of the top sash section, there is an optional component known as a horn. There are two types available: plant on horns and through horns. Through horns offer a richer more authentic aesthetic with the bottom section ‘butting’ against the side sections.

White Everest conservatory window detail

No Horn

Through Horn

Plant-On Horn

Bay configuration

A bay window is an arrangement of three or more individual window units. A bay window adds a projection to the wall which can be stood in, adding a stylish look from the outside and a great place to sit and relax on the inside.

Why Choose Everest uPVC sliding sash windows?

Increase energy efficiency and retain the character of your home

Wooden sash windows are beautiful but require years of painting and can experience problems that cause the sashes to stick, making them difficult to open and close. Everest uPVC Sliding Sash windows are low maintenance, they require no painting and with the added benefit of spring balances they are easy to slide up and down. In addition, with highly efficient double glazing they will help to keep your home warmer.

Modern security features on a traditional window

Everest take the extra step to make sure our traditional design provides the most up to date levels of security. We offer two levels of security with both top and bottom sash restrictors so windows can be left open for ventilation whilst restricting access, as well as fitch locks. Fitch locks are traditional sash locks but are key lockable and secured into galvanised steel reinforcement and adhere to the high standards.

Smooth running and easy cleaning

Everest uPVC sliding sash windows are fitted with spring balances, this assists the lifting and closing of the sash window so the window can be opened and closed with minimum effort. We then use advanced brush seals on the running surfaces to facilitate easy opening. In addition, Everest sash windows offer a tilt-in-hinge design which makes cleaning the outside of the window from the inside very simple, saving on window cleaning costs and an ideal solution for top-floor windows.

Modern spiral balance

A spiral balance system sits within the frame and uses a series of springs to counter balance the sash to ensure a smooth opening mechanism. This spiral balance system replaces the cords and weights system used in traditional sliding sash windows, giving a slimmer window profile resulting in more sunlight and warmth. Traditional sash windows are likely to be fitted as 'box sashes' and replacing these traditional sashes for uPVC is a specialist task which must be performed by a qualified installer. Everest installers are trained to the highest standards and ensure that our uPVC sash windows stand the test of time.

Secure internal glazing bead

All Everest uPVC windows are fitted with an internal glazing bead for two reasons. Firstly, it ensures the window is much more secure than if the glazing bead was put on the outside. The glazing holds the glass in place and if it is inside your house then it prevents potential unwanted visitors from removing the beading and glass and gaining access to the property. Secondly, it means that glazing can be fitted from inside the property, removing the need for glass to be carried up ladders or onto scaffolding and making installation a much safer process.

Can you have double glazed sash windows?

Double glazed sash windows are an ideal choice for conservation areas or for those who wish to maintain the look and feel of a period property. You can opt for an authentic timber sash look or a maintenance free uPVC option available in woodgrain finishes.

Can I replace my sash windows with casement windows?

Before you look to replace sash windows with casement windows it is important you check with your local authority. In some instances, for example if you live in a conservation area or a listed building, it may not be possible to place your sash windows with a modern casement window design or you may need to apply for planning permission. You will also need to consider your local area, to ensure that any change you make is in keeping with your neighbours. Additionally, it is worth considering if replacing your sash windows with casement windows would make the property less desirable for future owners.

Read more: Do you need planning permission for windows...

How long do uPVC windows last?

You should expect uPVC windows to last a minimum of 20 years, but with maintenance and varying factors, some windows can have a much longer life than expected.

Window type	How long they last	Everest guarantee
Double glazed units	25 years	Lifetime for condensation and fog
uPVC windows	20-25 years	Lifetime for discolouration (white uPVC)
Aluminium windows	45 years	25 years for the profile
Hardwood timber windows	50 years	30 years against rot of the profile

The quality of window frame products varies dramatically between manufacturers and installers. Cheap uPVC will warp and discolour long before a quality uPVC frame would. If frames are not fitted properly, they can be prone to water ingress, damp and draughts that will speed up deterioration.

Can I fit uPVC windows in a conservation area?

If you live in a conservation area, you need to check with your local planning office about limitations for window replacement. There may be a note in your Deeds about any restrictions.

Usually, in a conservation area, any changes to the fabric of the building have to be made like-for-like. And that will include materials.

If you currently have timber sash windows, you have to replace with timber sash windows.

Not all local planning offices follow the same rule, so always check to find out what you can and can't do.

How much do uPVC windows cost?

A white uPVC casement window is the most economical option, costing between £600 to £1,800 depending on size, glazing design and how many are being replaced in the property. However, these are average guide price ranges and not a definitive cost to replace windows in your home.

Read more: How much new windows cost...

High Quality uPVC Sash Windows, Guaranteed

10 year guarantee against fog and condensation between the panes of the sealed unit
10 year guarantee on the whole window, including colour finish, handles, locking mechanism and installation

Everest Window Reviews

BSI ISO 9001 quality management systems certified