French Doors

Cornwall’s local home improvement specialists

for over 25 years

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French Doors

  • French doors are a classic and beautiful way to open your home up to the outdoors, designed to maximise space and draw in natural light. 

    Here at CTG, we manufacture all our products ourselves, as we’re passionate about providing you with only the finest quality. Choose your French doors from a huge array of designs and finishes and find those that best fit your style and reflect the character of your home. 

    French windows used to be prone to swinging wide open when a gust of wind blows, but don’t worry. Our expert craftsmen install restrictors which will secure the door at any angle, so you won’t have to worry about the door crashing shut. French doors provide a beautiful and practical gateway to your garden, conservatory or patio and allow you to gaze at the outdoor view from the comfort of inside 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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    100% Satisfaction
    Award-winning customer service and after-care support.

  • Our bespoke doors can be set to restrict the door angle, so you won’t have any issues with doors swinging shut in the breeze. With a range of styles and colours, performance glass, multi-point security locking and low mobility access, there’s something for everyone.

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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

Technical and creative

French doors are known for providing excellent ventilation during the summertime. If you feel a little too warm, swing them open and make the most of the breeze that French doors let in.

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Are French doors always double?

If you choose to get French doors in your home, we will install two doors in the same frame. This means that when you open the two doors, you have a large, unobstructed space out to your garden, rather than having to separate doors with a pillar between them. You can choose to open one door for quick access outside, or both doors for maximum ventilation. 

At CTG, we almost always sell our French doors as double, but if you only have room for one door, then contact us and we can see what we can do in your space.

What is the difference between patio doors and French doors?

French doors are made up of two doors inside a single frame that you can open inwards or outwards, whilst patio doors tend to be sliding doors featuring one or a pair of sliding panels. Both designs have a great reputation for being suited to opening out into outside space such as your patio or garden. French doors offer good ventilation and provide more space to use though it’s important to factor in how much of your inside living space they will take up. Patio doors are especially suitable if you have limited space, as the doors remain inside the frame.

Do French doors swing in or out?

How you would like your doors to open is up to you, depending on your personal preference and the space you have. Inward-opening doors take up some inside space but may be preferable if they would otherwise be blocking parts of your garden you need access to. Outward-opening doors, on the other hand, preserve more of your inside space and we can offer modern tension hinges which make sure your doors don’t slam in the wind.  

Why is it called a French door?

As the name suggests, French doors were first made popular in France, having been influenced by designs originating in Greece and Italy during the Renaissance period. During this period, there was a strong focus on bringing more natural light into buildings and this is reflected by the large glass doors that make up the design of French doors. French doors were frequently used as doors to lead out to balconies and quickly gained popularity across Western Europe. They’re now synonymous with elegance and timelessness and provide a seamless link between indoor and outdoor spaces. 

Do I need planning permission for French doors?

In the case of French doors at the rear of a property that doesn’t face a road, you don’t require planning permission, whether you’re creating a bigger opening for the doors or replacing the same opening. Remember that if you live in a conservation area or a listed building, you may face restrictions. As CTG is certified with CERTASS, we can ensure your new doors are in line with the relevant regulations.

Do French doors increase home value?

Extending an opening to install a French door in place of standard doors can add value to your property. As they’re made almost completely out of glass, French doors accentuate the amount of light that comes into your home and in turn, give the impression of larger and more open-plan space. French doors are also favoured by many people as they offer the possibility of blending your garden or patio together with your inside space – great during the warmer months. Here at Britannia, we use only the most durable and high-quality materials. Our French doors will provide a stunning aesthetic result, without any compromise on security or thermal efficiency.

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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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