Efficiency and Charm: uPVC Sash Windows Unveiled

One of the most common dilemmas faced by homeowners when replacing their windows is whether to opt for classic charm or modern efficiency.

Striking a middle ground is tricky, as traditional window materials such as timber that boast sought-after traditional styles often have their flaws, with poor thermal efficiency being an example.

On the flip side, modern materials with benefits such as energy efficiency, durability, and security, are often perceived to have a bland appearance.

However, these old perceptions are no longer the truth. At Cliffside Windows we are proud to offer high quality uPVC sliding sash windows in the Lincoln area, combining the benefits of current technology with traditional charm.

What are Sash Windows?

Sash windows, or sliding sash windows, feature moveable panels that can be slid vertically to make an opening.

They’re a brilliant way to allow more ventilation and airflow into your space, as the opening width of the sashes can be easily adjusted.

Sash windows are famed for their classic design, and are often associated with traditional buildings, a look that’s been sought after for centuries and that’s very much on-trend in 2024.

Traditionally they were made from timber, a high-maintenance material that let heat easily escape the building – which is why we use uPVC for our sash windows.

mock sash window

uPVC: What is it?

uPVC stands for unplasticised polyvinyl chloride and is a form of plastic known for being durable, low maintenance, cost-effective, and energy efficient.

As well as sash windows, it’s also used for a whole host of doors, conservatories, and various other facets of the construction industry.

It works brilliantly as a high quality timber replacement, giving your home that vintage feel, especially when complemented with a woodgrain finish.

sash windows are secure

The Benefits of uPVC

As mentioned above, uPVC has a wide range of benefits. These include:


Unlike timber, uPVC is highly resistant to weathering, warping, and corrosion. It has a strong molecular structure, that not only protects it from the elements but also from moisture.

Energy efficiency

Our Cliffside sash uPVC windows are made with excellent thermal insulation properties, which work to retain heat in the winter and keep your home cooler in the summer. In turn, this will save you money on your energy bills, as you’ll be far less reliant on radiators, electric heaters, fans, and cooling systems.

Low maintenance

Another key difference between timber and uPVC is the amount of maintenance required. While timber’s tendency to rot and need repainting costs time and energy, uPVC requires minimal upkeep. A simple wipe down with a damp cloth now and again should keep your windows in top condition all year round.

Cost efficient

uPVC is up there with the most affordable window materials, largely due to its ability to be mass-produced, which is more difficult with a material like timber. It makes it an ideal choice for homeowners looking to strike a balance between affordability and high performance.


At Cliffside, our windows come with double glazing as standard, which combined with the soundproofing qualities of uPVC, means your home will be protected from unwanted external noise, unlike timber which isn’t as effective when it comes to noise reduction.

new windows - sash windows are secure


uPVC Sash Windows from Cliffside

At Cliffside Windows, our sash windows are available in a wide range of colours and customisable options.

If you’d like a truly period look you can choose to have accessories such as decorative sash horns or Georgian bars installed. You also have the choice of a white, cream, or a realistic woodgrain appearance offering a more natural wood effect to replicate the authenticity of an original timber sash window.

If you’re looking for something slightly more contemporary, anthracite grey, chartwell green, golden oak, or brilliant blue remain popular options.

We’re proud to say that we have over 50 years of experience across all areas of home improvement, and we’re not just a sliding sash window installer.

Other popular options include casement windows and tilt-and-turn windows, as well as our much-loved French doors, patio doors, composite doors, conservatories, and porches.

Contact Us

If you’re interested in collaborating with our brilliant Cliffside team, you’re in the right place. Get a free no-obligation quote here.

Alternatively, you can dial 0800 9700 190, or email enquiries@cliffsidewindows.co.uk

Our friendly customer service team is always happy to help, and guests are more than welcome to our Lincoln showroom!

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