Upgrade Your

Manufactured in our Bristol & South West family-owned factory

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Upgrade Your Conservatory

  • Bring your conservatory to life again. Rather than freezing in the winter and sweltering in the summer, upgrade your conservatory so that it can be a room for all seasons.

    To regulate the temperature in your conservatory, there are multiple options available to you. Upgrade to double or triple glazing to help insulate the space, add a tiled roof to keep more heat in, or replace your windows and doors to avoid chilly draughts.

    If you’re looking for a full upgrade, use our modern and practical solutions to make sure your conservatory is a utilisable space all year round, and at any time of day. Install lighting around the edges of the conservatory to give a warm light in the evening, or add tinted films to the window so that it isn’t overpoweringly bright on a summer’s day.

    We have extensive experience in building and upgrading conservatories; from traditional Victorian and Edwardian styles to more modern looks, so we can give you the best advice on how to makeover your current conservatory so it is an integral, practical part of your home, all year round. All our materials are made to measure in our state-of-the-art factory, and have undergone extreme weather testing, so whichever upgrade you choose, you know it will last for years.

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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.

  • Upgrade your existing conservatory with a range of modern and traditional styles and colours – newly built or using your existing foundations and walls. Consider installing new performance glass panels that are better insulated and will boost your home’s energy efficiency. You could also choose a solid tiled roof to your conservatory’s pre-existing frame. Even making small tweaks can have a big impact – like adding new bi-folding doors out to your garden.

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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

Contact us today for a free quote, or pop into one of our showrooms to talk to an expert on the best way to upgrade your conservatory.

Call us on: 01275 878153

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Common Questions

What are the best ways to upgrade my conservatory?

If you have an outdated conservatory that you want to upgrade, there are multiple ways to do so. The first thing to do is to identify the issues you have with your conservatory; is it freezing in winter and boiling in summer? Are there draughts and cold spots? Do the fixings on your windows need replacing? Are the sun’s UV rays damaging your furnishings? Is your conservatory roof dirty and stained from years of neglect? We can fix all these issues and more at Britannia; contact us today to find out which upgrades would be best for your conservatory.

How can I upgrade my conservatory to make it more insulated?

There are multiple ways to help you upgrade your conservatory to reduce heat loss. If you have an old polycarbonate roof, this might be the worst culprit; we can replace it with a tiled roof, a double glazed glass roof, or even a lantern roof, depending on which you prefer. If you have an old conservatory that is made from single-glazed windows, then we can replace these with double or triple glazing to help you keep the heat in during cold snaps. By taking these steps, you can make your conservatory into a liveable space all year round!

When should I upgrade my conservatory?

Nearly 210,000 conservatories were installed in 2006 alone, and all substandard from an insulation point of view. These old-fashioned conservatories simply don’t perform well enough to be a functioning extension to your home. If you have a very old aluminium conservatory, it might be time to call it a day and replace your conservatory altogether, but even an old PVCu conservatory can easily be upgraded by installing new efficient windows and doors. If you are noticing a drastic reduction in heat retention, or if you can feel draughts and cold sports, then it is definitely time to think about upgrading your conservatory

How can I upgrade my conservatory to make it match my home?

New advancements in construction materials and technology make it easier for you to upgrade your conservatory so that it blends in seamlessly with your current home. We offer a variety of finishes on PVCu, so you can match your current window finish with that of your conservatory easily.

If you’re thinking of upgrading your conservatory by adding a tiled roof, we can do our best to make sure that the tiles we use look the same as those used on your house. If you want to add pillars or dwarf walls to your conservatory, we can try to match the brick or paintwork so that it will look like the conservatory was built at the same time as your house! There are multiple easy ways to match your conservatory to your home – contact us today to find out more.

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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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Free home survey

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You choose a suitable date for fitting and we do the rest

Tim Greenslade
Tim Greenslade
Every person was polite and professional, helpful and personable. The process was simple and clearly explained each step of the way. It is rare to get such good service, not to mention the quality of the products. I am very pleased with the windows, the fitting, the price and the experience as a whole. I would happily recommend Britannia Windows.
From the salesman to the office staff and fitters, everyone was thoroughly pleasant and helpful so an excellent experience all around. I'm very pleased with the windows too, they look great. Would recommend without hesitation.
Meg Welch
Meg Welch
Great job of our new front door. They couldn’t have been more helpful and even fitted earlier originally planned. Also gave great aftercare advice and at a very reasonable price! Would 100% recommend.