Casement Windows

Bristol family-owned casement window manufacturers and fitters

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Casement Windows

  • Casement windows provide an effortless, elegant look and will complement every type of home. Highly versatile, our casement windows are attached to a frame using one or more hinges; they can open inwards or outwards, and the window can be top hung or side hung.

    Top hung casement windows have hinges at the top and they open from the bottom of the window frame, meaning they keep out the rain if you leave a window open. Side hung windows offer excellent ventilation – you can even angle slightly to help catch a breeze – and are easy to open and close.

    One of our most popular windows, we tailor these casement windows to your exact specifications and manufacture them in our state of the art factory, before sending them to be installed by our expert engineers. They are available in various frames and colour finishes so you can make sure these casement windows fit the general aesthetic of your home.

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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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    Secured by Design
    Covered by the Official Police Security Initiative.

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

  • All our UPVc casement windows are crafted using the latest multi-chambered technology to achieve the very best thermal and weather performance. This works to trap in pockets of warm air and maintain the temperature in your home. The gasket delivers a continuous seal to keep windows draught free.

    State-of-the art multi-locking security features, wide choice of styles and configurations and colours make for a perfect fit.

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    Flexible monthly payments

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    Interest free credit

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    Buy now / pay later

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    No finance required

The popular choice

Our new and improved casement windows now have more security, better insulation and reduced noise pollution, which means you will spend less on energy bills and you can enjoy a restful, quiet home, no matter where you are. 

These casement windows are certified by Secured By Design, part of the Official Police Security Initiative, which seeks to achieve sustainable reductions in crime through high-quality and innovative design.

Call us on: 01275 878153

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Common questions

What is a casement window?

Casement windows are one of our most versatile window designs. The window sash is attached to the outer frame with hinges that are hidden in a euro groove – this means they cannot be seen from the outside. You can opt for single windows, paired windows or any variety of casement windows within the same frame. Casement windows open outwards and are protected from sudden winds with friction hinges.

Although the most common way for a casement window to open is using side hinges, you can also choose top-hung casement windows. This has the hinge at the top of the frame and the handle at the bottom, which is often used in kitchens (as the opening mechanism is easy access) and bathrooms (as you can open the window without sacrificing privacy). The top hung option also helps block out water in a sudden rainfall.

Are casement windows more energy efficient?

Casement windows are fully sealed as an airtight seal is created by the window sash pressing against the frame when closed. This stops the cold outside air from getting in, whilst ensuring that any inside warmth doesn’t escape. As this naturally insulates your home, you won’t need to spend as much on energy bills: your room will feel warmer without even having to turn the thermostat.

For maximum energy efficiency, casement windows can be double or even triple glazed. Not only does this mean you spend even less money on heating your home.

What is the difference between a casement window and a picture window?

As casement windows are attached to the window frame by a hinge, they can be swung out. This makes them a great way to let fresh air in to circulate around the home. Picture windows, on the other hand, are better designed to allow for a beautiful panoramic view of your outside space.

Whilst casement windows are typically small, comprising multiple sashes or panes, picture windows are made up of very few window panes, so that you have little obstruction to your outside view. Unlike casement windows, picture windows are fixed which means they can’t be opened.

Are casement windows secure?

The special hook shaped locks that insert directly into the frame of casement windows make them very difficult to break from the outside. Whilst intruders may try to pry them open, casement windows make this very hard to do, and their multi-locking system adds another element of protection.

At Britannia, our casement windows have the added benefit of being covered by the Official Police Security Initiative, Secured By Design. This means that you can enjoy your casement windows, comfortable in the knowledge that they will keep you and your loved ones safe all year round.

How much do casement windows cost?

The prices of casement windows can vary greatly, meaning there is no single figure of cost. The price of a casement window depends on the material used, the time taken to fit the windows, and how much work needs to be done to fit the window.

UPVC casement windows are the most cost effective materials to opt for. If you’d prefer a different finish, such as timber alternative, flush casement or aluminium, this is likely to cost more. For a more accurate measure of cost for casement windows, contact us for a free, no obligation quote to find out more.

Are casement windows worth it?

Casement windows are a brilliant way to let in light and air, ensuring your room has a fresh feel to it. Casement windows are also good insulators – the compression seal technology fits snugly to the window sash, creating a tight seal which prevents cold air from getting in and warm air escaping, helping you to save on your energy bills.

Casement windows are also ideal for those who have limited mobility: a crank mechanism opens and closes the window, which requires little effort. In many cases, casement windows can be simply shut and opened with one hand.

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 home. 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 homes energy efficient and one way is to choose new PVCu windows and doors. Not only will they help to keep your home 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 home 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 home. 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 home. They are highly trained, motivated and want to go the extra mile to do the best possible job. Our fitters will treat your home 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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