One of the most popular styles available, casement windows have featured in homes nationwide for centuries – and with good reason.

Versatile enough to complement any London home, from a charming townhouse to contemporary flat, casement windows remain a great option for modern homeowners.

In the 1980s and 1990s, white uPVC casement window styles dominated the market, but this is no longer the only option available. As one of the most versatile window styles, casement windows can be customised to complement the architectural diversity of London’s homes.

At Unique Glazing, our casement windows come in a variety of styles, configurations, colours and finishes, with optional extras such as heritage astragal bars and enhanced triple glazing available.

What materials are commonly used to make casement windows?

Casement windows are commonly made using uPVC (unplasticized polyvinyl chloride) or aluminium. These materials offer durability, energy efficiency, and a wide range of design options to suit different architectural styles. uPVC and aluminium are also both weatherproof and resistant to corrosion, rotting or warping.

brown flush sash window

Classic or contemporary

Casement windows date all the way back to the medieval period when windows were made from timber. However, while this style is often associated with older properties, there are plenty of ways to adapt casement windows to suit contemporary homes.

You can choose from a range of opening configurations, including top or side hung. Side hung casement styles are more traditional, whereas top hung can offer a more modern effect. You can also choose from a range of sleek, minimalistic hardware to complete the look.

If you’re after heritage aesthetics, Georgian bars or patterned glass offer a traditional look, while mock sash horns give the appearance of a classic vertical sliding window. You can also opt for ornate sculptured (curved) frames which provide a more decorative finish.

Choosing the perfect colour

When uPVC first dominated the home improvement market in the ‘80s and ‘90s, white was invariably the only colour on offer. Luckily, much has changed since then!

Whether you opt for uPVC or aluminium, there is a selection of colours for homeowners to choose from, ranging from natural minimalistic tones to deep striking shades.

Choose from finishes that complement your existing home, or opt for an eye-catching look by selecting contrasting colours that stand out.

upvc brown install

Wood-effect casement window styles

For those looking for something a little bit different, uPVC can be finished with wood-grain effects to mimic the appearance of timber windows. This is an especially great option for those looking for the sought-after aesthetics of wood without the hefty price tag!

Wood-grain finishes are also the perfect choice for those living in listed buildings or in conservation areas as they provide the visual appeal of timber casement windows which is often desired by local planning authorities.

Wood-grain finishes aren’t just for period properties, however. Timber-effect finishes can also be great for more rural homes, as the rustic, earthy tones perfectly complement natural surroundings.

Superior thermal efficiency

At Unique Glazing, our casement windows don’t just look good. We source our windows from industry-leading names to ensure that we can offer some of the most thermally efficient designs around. We even offer triple-glazing for those looking to take thermal efficiency to the next level.

Both our uPVC and aluminium casement styles are able to achieve an A++ energy rating, meaning that they excel at trapping warm air inside and keeping the cold out.

Thermal efficiency also comes with additional benefits – a thermally efficient window is likely to provide enhanced sound insulation to block out external noise!

white casement window

Sleek and sophisticated aluminium

While uPVC is generally more affordable, aluminium casement windows have seen a huge rise in popularity in recent years.

With slim, sleek sightlines and a refined, contemporary finish, many London homeowners are opting for aluminium for a modern take on this classic window style.

Aluminium is also an incredibly strong and durable material, meaning that it can support larger panes of glass than uPVC windows. This means that London homeowners can make the most of their view and maximise natural light by installing aluminium casement designs.

Stylish uPVC and aluminium casement windows in London

Looking to upgrade the windows in your London home? We install uPVC and aluminium casement windows in homes across London, Slough, Berkshire and surrounding areas.

Why choose Unique Glazing? With an insurance-backed 10-year guarantee for all of our products, you can enjoy peace of mind knowing that your home is in good hands. And, with years of experience, you can count on our expert team to install the very best quality products with minimal disruption.

For a free, no-obligation quote or to discuss your options, please call us on 0333 444 2425 or email us at If you’d prefer, you can contact us online.



Delivering Customer Satisfaction

We strive to provide the best service for our customers. Here are some Checkatrade reviews from our happy customers.

High quality work and fittings

I would like to thank you for delivering high quality work. Guys are professional and very precise, quick and reliable. They will well prepare the place for the work and...

Checkatrade Customer

August 2023

I would definitely recommend

Unique glazing carried out a double glazing window install required. It probably wasn’t the biggest job they’ve undertaken but the service and attention to detail was certainly of a what...

Checkatrade Customer

September 2023

I will be using them again in the future

I had 9 windows fitted at my house yesterday - the two fitters were amazing. The workmanship was of a high level, left the house spotless before they had left....

Checkatrade Customer

October 2023

Exceeded my expectations

From start to finish we had a pleasurable experience with Andy and his team. Andy came and answered all my questions and came back to my house many times to...

Checkatrade Customer

October 2023

Immaculate service

The windows replacement service was perfect. All the windows were done and fitted within the time I expected. Thanks to the friendly staff for their absolutely immaculate and friendly service....

Checkatrade Customer

October 2023

Great Windows and experience

We had the front windows and door replaced and the whole process was great. No pressure, emailed us a quote. The surveyor abs installers were very helpful and hardworking. Will...

Checkatrade Customer

July 2023

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