Sash Windows

Hayle and the South West

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Sash Windows

  • Installing our sash windows means you can enjoy a traditional, charming look with all the advantages of modern windows. Sash windows can be seen on period homes from the last few centuries, but older homes often have timber frames that aren’t as good as modern window frame options.

    When you have new sash windows installed by St. Ives Windows, you can replace draughty, rattling windows and outdated single glazing. New uPVC or aluminium sash windows can give you better insulation, and because they can be tilted open, they are easy to clean while still being suitable for listed homes. 

    It’s easy to see why sash windows have been popular for so long. They add character and charm to any home, while allowing for lots of light and ventilation. They’re also easy to use, with a smooth, sliding operation.

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    Lifetime Guarantee
    10-year manufacturer’s guarantee.

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    Tailor Made
    Classic windows tailor made to your exact specifications.

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    100% Satisfaction
    Award-winning customer service and after-care support.

  • Robust design and aesthetically pleasing appearance, our vertical sliding sash windows bring out the character of any project. With near-invisible joints and the grace of the run-through sash horn. The easy gliding operating system means that opening and closing is smooth, while the upper and lower windows tilt inward for safe cleaning and ultimate ventilation.

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    Lifetime Guarantee

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    Lifetime Guarantee

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    Lifetime Guarantee

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    Lifetime Guarantee

Windows that slide vertically

Your sash window will be made to measure in our UK based factory, using the colour and finish specifications you choose. uPVC sash windows can be made in a woodgrain effect, which gives you the character of a timber window, with the advantages of uPVC. 

Come and visit us in our showroom, or contact us today to arrange for a free, no-obligation quote at your convenience.

Call us on: 01736 798964

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Are uPVC sash windows good?

While uPVC is practical, it’s never been thought of as beautiful. However, nowadays, uPVC can be used to create traditional looking styles such as sash windows. This means you can enjoy the benefits of uPVC like low maintenance, and the classic style of a sash window.

uPVC is also cheaper than timber frames and tends to last much longer without needing maintenance. With many woodgrain finishes available, you can get the good looks of timber windows without the hassle.

Can sash windows come with double glazing?

Order sash windows from St. Ives Windows and they’ll come with double glazing as standard, with the option to upgrade to triple glazing. These glazing types use layers of glass with gas trapped between them, so warm air doesn’t escape your home and cold air doesn’t get inside. 

Our UPVC sash windows are easy to fit with double glazing, so you get all the advantages of beautiful, period-style sashes while still getting excellent levels of insulation that keep your home warm and cosy.

How do you measure for sash windows?

When sash windows are to be installed, these important measurements need to be taken:

  • The width of the sash window, from one side of the box frame to the other
  • The height of the sash window – this includes both sashes inside the box frame
  • The box frame height – from the top of your window frame to the windowsill
  • The width of your box frame – this needs to include the entire window frame

St. Ives Windows will do the measurements for you during your consultation to ensure that the correct size is manufactured and fitted.

How does a sash window work?

A sash window has two panels and at least one of these panels will move up and down. A single hung sash window will have one panel that moves, while a double hung sash window will have top and bottom panels that can both move. This can allow more air into your home.

Sash windows operate with a pulley, so when you slide your window into the position you want it at, the window stays in place. The counterweight stops it from slamming shut.

Should I choose uPVC or aluminium windows?

If you want to stay budget-friendly, uPVC is the best option. It’s a material that’s naturally insulative and doesn’t need much maintenance. All you need to do is clean dirty frames with warm, soapy water to keep them looking good.

Aluminium windows tend to cost more than uPVC, but they are strong and can look great on period homes. We can create aluminium sash windows with slimmer frames, so you can enjoy a less obstructed view and can let more light into your home.

Which part of the window is the sash?

The window sash is the part that sits inside the window frame, keeping the glass panes together. With single hung sash windows, only one panel will move, while double hung sash windows will have two panels that move up and down.

0% APR representative on orders over £3,000

We have various low cost finance options available. Get a quick quote and apply for finance at the same time.

Features and benefits

Guarantees you can depend on.

We have built up a great reputation over years of delivering a first class service and excellent products, all from our local, no nonsense all-about-you company.

From characteristic country cottages to contemporary town houses, we’re confident that our products will offer a style and finish to truly transform your project. Through constant innovation the quality, durability and security of our products is genuinely second to none. As a local company we are proud to offer British Standards BS7412/PAS24 for enhanced security.

We refuse to compromise on quality

Our windows are made from British Made, high quality MarinespecTM components, with up to 25 years anti corrosion. They are built specifically for the more exposed areas of corrosion, such as coastal environments to give you worry free performance beyond your guarantee.  We believe spending more on components is worth every penny, and sets us apart from our competitors.

State of the art fabrication for best quality

We have invested millions of pounds into one of the most state of the art manufacturing facilities in the UK.  This enables us to provide you with consistently high quality products at exceptionally good prices. Our loyal factory workers are well trained and take pride in their work, they really care about quality.  Our machines are maintained according to a rigorous servicing regime to keep them in top condition.

Superior energy efficiency

Our ‘A’ rated energy efficient and triple glazed windows are tested by the BFRC, which will save you money on your heating bills. By law your windows and doors have to meet strict thermal performance regulations but you can be rest assured that our products exceed current requirements.

Energy saving is incredibly important and so is keeping your fuel bills down. We are continuously looking for ways to make our projects energy efficient and one way is to choose new PVCu windows and doors. Not only will they help to keep your project warmer, they will reduce your energy loss.

Don’t just take our word for it!

Our suppliers conform to strictly controlled and independently monitored Quality Management Systems such as ISO 9001, to ensure that everything is done correctly and according to best practise.

Our windows are tested independently by British Standards for security, weather tightness and strength performance. This means that periodically, we have to send them to independent test houses, in order to be tested to destruction.

These are just some of the many standards the products in our vast range conform to. Needless to say we take the quality of our products very seriously indeed.


Made to measure

The styles available are endless and the choices to suit your project are bigger than ever before. Traditional, contemporary or modern; our versatile window and door designs will create the look you want to complement and enhance your project. If you want windows that are as individual as you, our range of coloured and woodgrain windows offer you fifteen different colours and finishes.

A local business that really cares about its customers

Our sales consultants, surveyors, admin team and installers really care about you and your project. They are highly trained, motivated and want to go the extra mile to do the best possible job. Our fitters will treat your project with care and respect and will take time to ensure that you are delighted with the end result.

With a local showroom including an extensive display and experts on hand you can see before you buy and meet the team!

An effortless purchase process

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You choose a suitable date for fitting and we do the rest