Casement Windows

Cornwall’s local home improvement specialists

for over 25 years

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Casement Windows

  • If you’re looking to bring character and elegance to your home, casement windows could be the ideal choice for you. A classic design, the most common style of casement window is side hung; so they open like a door. You can choose whether you want them to open inward or outwards. 

    Whilst side-hung windows ensure the room receives optimum ventilation (they can be angled should you wish to bring a little breeze into your home), top hung casement windows (which open at the bottom) stop the rain getting in, even if one is left open. 

    Casement windows are one of our best-selling products, thanks to their versatile design and the high-quality materials from which they are made. A range of colours and frames are available, so you can choose those that best fit your home’s unique décor. All windows are made to suit your exact requirements and installed by highly experienced and talented engineers.

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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.

  • Manufactured using our multi-chambered technology, offering the height of thermal and weather proofing. Creating a pocket of air, your home will be warm and draught-free.

    Safety is paramount with our multi locking security features, offered in wide range colours, styles and configurations.

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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 casement windows have been designed with improved security and insulation in mind, helping you to reduce your energy bills. The benefit of less noise pollution means you can enjoy a quiet and tranquil home environment.  

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


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Common questions

What is a casement window?

Casement windows are secured to a frame with multiple side hinges, so they can swing open or shut. You have the choice of one or two windows to be fitted inside a single frame. You can choose whether you’d like the window to open inwards or outwards, depending on your home.  

In most cases, casement windows are attached through a side hinge but you can choose an awning casement (top hung) window if you wish. Awning casement windows are effective in keeping your home dry during the wetter times of year, as they open from the bottom, and the sash angle stops rain from entering your home. We recommend bottom-hung windows (that open at the top) if you’re looking to have casement windows fitted in your basement.

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

Picture windows don’t open and are considered favourable if you’re looking to make the most of a stunning panoramic outdoor view. As they’re one single window pane, your view is uninterrupted. Casement windows, on the other hand, have smaller sashes and can open, allowing for natural light and air to enter your home. Generally, they have several sashes and panes, unlike picture windows, which are a single pane of glass that cannot be opened.

How much do casement windows cost?

Casement windows vary in cost, depending on factors like the size of the window and the material used to make the frame.

Materials such as aluminium and timber are the most costly when considering casement windows. If you’re looking for a cheaper option, choose uPVC, which is durable, long-lasting and comes in a range of finishes. Please don’t hesitate to contact us free of charge for a quote or to find out more. 

Are casement windows more energy efficient?

Casement windows prevent the cold from entering your home and stop heat from escaping thanks to a fully airtight seal. Not only does this save money on energy bills, but it also keeps you and your home warm. 

Choose double or triple glazing to cut your energy bills even more and keep outside noise out, which is ideal if you live in a busy neighbourhood.

Are casement windows safe to use?

Owing to the hook-shaped lock that inserts into the window frame, casement windows are challenging for intruders to break from the outside. They also have a multi-locking system, fortifying your home against burglaries. 

Britannia’s casement windows are covered by the Official Police Security Initiative. Be safe in the knowledge that you and your loved ones remain safe both day and night with our casement windows.

Are casement windows worth it?

Investing in casement windows will give your home a light and airy feel in the summer, as well as insulating it and keeping the warm air from escaping in the winter. 

Casement windows are also extremely easy to open with one hand, which makes it a great choice for older people or those with difficulty opening other types of window, like sash windows. .

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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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