Composite Doors

Cornwall’s local home improvement specialists

for over 25 years

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Composite Doors

  • Well-made and robust, our composite doors ensure an incredibly high level of security, making them suitable for any home. Here at CTG, all our composite doors are fabricated from Glass Reinforced Plastic (GRP) technology, known for being safe and strong. 

    The high standard of engineering means all composite doors have a stylish smooth finish, rendering any property smart-looking and stunning. Whilst composite doors are designed to last for decades, with the correct degree of maintenance, there’s no reason why they can’t last a lifetime. A solid investment for any home, composite doors are resistant to cracking, colour fading and warping. 

    Our philosophy is to offer something for everyone’s tastes and budget; choose from a myriad of colours and designs here at Britannia, according to your price range.


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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.

  • Made from its rigid polymer sub-frame, our composite doors offer enhanced security for your home. The high density insulated core and high impact resistant GRP (Glass reinforced polymer) skin, mean you can enjoy the most advanced technology.

    Offering impressive sound insulation and a 19% improved thermal efficiency of a standard timber core composite door, you can trust in this high level technology to keep your family safe.

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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

Every taste catered for

Whether you’re after a traditional aesthetic or would like to brighten up your home with a touch of colour, our selection of composite doors offers you the option of showcasing your personality when it comes to your home’s exterior. Why not visit your nearest showroom and accentuate your home’s exterior personality and beauty.

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Are composite doors good?

Choosing composite doors is a viable investment for your home, made to your personal specifications and offering security and thermal efficiency. 

The fact that composite doors are made in a high-pressure and high-heat environment makes them hardy, long-lasting and resistant to the elements, like wind, rain and snow. Composite doors are one of the most durable styles available. 

Save money on your energy bills, as composite doors have been proven to be more energy-efficient than their uPVC counterparts. With the option of choosing your preferred colour texture and design, it’s never been easier to find what you’re looking for.

Are composite doors cheaper than uPVC?

Because they’re slimmer, uPVC doors require fewer materials, have a simpler manufacturing process and are less costly than composite doors. That doesn’t mean this should be the principal focus when considering your overall expenditure. Our uPVC doors are also durable and energy-efficient, and they have many more glazing options than our composite doors. 

It’s true that uPVC doors are the more cost-effective answer in the short term, but composite doors are more enduring and energy efficient overall.

What is the best material for a front door?

Wooden doors – wooden doors can give a timeless look to any home and can be adjusted to doorways of all sizes and shapes, though they can be more susceptible to weather damage than other door styles. This means they can need more looking after if you want to maintain their appearance. 

Composite doors –  composite doors keep your energy bills low because of the high level of insulation they can offer. They’re an amalgamation of various materials including fibreglass and foam and ensure durability and security. 

uPVC doors – made from highly resistant materials, these doors are a popular choice as they balance high performance with a great price. At CTG, we offer a wide range of colour, finish and glazing options for you to choose from.

How long should a composite door last?

With proper maintenance, a composite door can last a lifetime. We use 100% CFC-free polyurethane foam in our composite doors which is water-resistant and very thermally efficient. Other composite doors have a timber core, but we found that this is prone to warping if it gets damp. 

All our composite doors come with a 10-year guarantee, but with the right care, they can last decades. Just wipe your door down to remove dirt and oil your hinges once a year; read our repairs and maintenance page for more details.

What does a composite door mean?

Composite doors are made from various materials, as the term ‘composite’ suggests. The fact that they aren’t made from one single material means they’re a more durable option. 

Our composite doors have a 100% CFC-free foam core, which is extremely strong and a great insulator. Other composite doors have a timber core, which is also very strong, but we found that they have a tendency to warp if any dampness gets into the door. Designed for strength and durability, our composite doors will keep you safe for decades.

What should I look for when buying a front door?

When choosing a front door, it’s important to decide on the aspects you wish to prioritise. If aesthetic is most important to you, wooden doors give a classic and smart appearance. In the case of composite doors, many colours and style designs are available to choose from.  

Remember to consider both long and short term costs. uPVC-style doors may cost less to buy outright but won’t be as durable as composite doors, but we do have a wide variety of glazing and colour options if you want to add some personality to your home.

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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.

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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