Sash Windows

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

Everest Internal Georgian bars are fitted within the sealed unit, between the panes of glass for easy cleaning.

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.

The window sash is the part of a window that opens and holds the glass and framework around the glass to keep it in place. Window sashes are extremely important to the overall construction and stability of the window. It is imperative that vinyl window sashes are multi-chambered and reinforced to prevent distortion. If a window sash is distorted, then this could cause issues with leakage and locking of the window itself.

Sash windows are comprised of one or two vertically sliding sashes. To enable the window to remain open a series of clever counterweights connected via a sash cord or a big spring called a spiral balance hold the window open. The sash cord runs over the top of a pulley along the top rail.

The most important difference is that sash windows open vertically and casement windows normally open out or in like doors. Sash windows are the traditional window design and at Everest we feel have a classic timeless style that look great in old and new houses alike. A casement window is a modern variant being more practical and offering benefits such as better security as the lock is constructed within the frame and ease of cleaning. Sash windows are more complex in construction and can require some maintenance unlike casement which is very much fit and leave.

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...