Add period charm to your home with sash windows

Our vertical sliding windows are the perfect replacements for those used in Victorian and other period style properties. Although, it is common for them to be seen in new builds and traditional red brick houses too. Here at T&K Home Improvements, our vertical sliders are available in 2 different materials: uPVC and timber. However, they can also be customised with a range of authentic sash window furniture, numerous colours and more.

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Are you looking for new windows for your home? This buying guide contains all the information you need to find the right windows for you.


Compare our vertical sliding window options

uPVC Timber
Colour Options 15 different colour options and woodgrain finishes. Dual colour option available. 12 colours and 9 wood stains. A dual colour option is available.
Glazing Options High-quality double glazing High-quality double glazing
Energy Efficiency Can achieve Window Energy Ratings (WER) of ‘A’ with double glazing. Possible Window Energy Ratings (WER) of ‘A+’ can be achieved.
Life Expectancy At least 35 years with no maintenance required. uPVC is finished with a protective coating to stop fading. Can last at least 60 years provided they’re re-treated every 5-7 years.
Security Reinforced meeting rails, sash fasteners and sash stops. Certified to PAS 24. Sash fasteners and sash stops. Certified to PAS 24 security standards.
Suitability Low maintenance material that offers a range of versatile designs, excellent thermal performance and modern security. Classic sash window material, renowned for its timeless charm and beauty. Built from FSC chain of custody sustainability approved timber, naturally insulating and highly durable.

Low maintenance uPVC sash windows in Luton, St Albans, Cambridge and Bedford

Although uPVC is not the traditional material used to build vertical sliders, ours are strictly built with original sash window design in mind. So, you can still enjoy an authentic appearance. Combining the natural insulation qualities of uPVC with draft-excluding wool pile and seals, they keep in the heat and keep out the draughts too. Therefore, leading to a comfortable home.

Even though uPVC is super easy to clean already, it is even easier to clean our uPVC vertical sliders because the window sashes can be tilted inwards, allowing you to clean them from inside the home. They also feature locking cam catches and a reinforced meeting rail, so they do not compromise home security either.

View our uPVC vertical sliders
uPVC bay vertical slider
Curved white timber vertical sliding windows

Wooden sash windows in Luton, St Albans, Cambridge and Bedford

As the classic material used to build vertical sliders, real timber brings a sense of authentic charm along with it. However, they also utilise the latest technologies to ensure for a combination of period aesthetics and modern performance. Naturally insulating timber allows them to achieve fantastic energy ratings of A+ and also leads to a reduction in outside noise coming into the home. Therefore, you can enjoy quiet and warmth throughout the year.

Built from sustainably sourced timber and able to last for at least 60 years, they’re perfect for anyone looking to lessen the blow on the environment too. They’re available in 19 different colours and a selection of woodgrain finishes, so you can find a set to suit your home.

View our timber sash windows

How much do sash windows cost?

The price of sash windows is affected by multiple factors, so there is no set cost for them. However, some of the factors affecting their price include:

• The number of windows being fitted
• What material they are built from
• Their colour/finish
• Locking hardware and window furniture

For a more comprehensive overview of the factors affecting their cost, please use the link below to our informative window prices page.

Learn more about window prices
uPVC vertical slider installation
White timber vertical sliding window close up

How to secure sash windows?

Sash windows come with their own distinctive selection of hardware, which helps to keep the home secure from forced entry attempts. This includes:

• Reinforced meeting rails – this is the top rail of the bottom window sash and bottom rail of the top window sash.
• Sash fasteners – these secure the 2 window sashes together.
• Sash stops – these work by preventing the window from being fully opened.

For detailed information on sash window locking hardware, please use the link below.

Window locking hardware


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Fabulous from start to finish. I would have no hesitation recommending your organisation. Thank you […] for their professionalism.



couldn’t have asked for more

Throughout the process, he couldn’t have asked for more. All the staff have been helpful and friendly, and the finished installation is fantastic.



Prompt & professional

I’m very pleased with the work, quality and efficiency. A very good top job carried out.



I would recommend T&K to anyone!

I would recommend T&K to anyone! They have done a fabulous job installing a new front door and canopy. First class job!



Professional, courteous and friendly

I had dealt with T&K before and had full confidence in their work and company values. The work was completed on time, at the agreed price and in a professional manner. The fitters were professional, friendly, respectful and tidy.



excellent company

We have had all our doors & windows replaced by T & K, excellent company.



Fantastic company

Fantastic company that designed the perfect conservatory for my home and at a very cheap price, I would recommend them to anyone.



Thank you for my recent installation

Thank you for my recent installation. I am delighted with the result, and would recommend your organisation without hesitation.


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With full accreditation from the appropriate regulating bodies, you can feel assured of the quality that’s on offer.

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Serving homeowners across Northamptonshire

During our tenure as traders, we’ve provided bespoke home improvement solutions across the Northamptonshire area and beyond. This includes areas in counties like Oxfordshire and Buckinghamshire. We've installed home improvements in places such as Corby, Northampton, Bedford, Kettering, Milton Keynes, Cambridge, Aylesbury, Oxford, Rugby, Bicester, Luton, Market Harborough & Banbury.

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