Conservatory Roof Replacement Costs

Replacing your old conservatory with a sparkly new one is a great way to give your property a new zest for life – but it’ll cost you. In fact, you can expect a conservatory roof replacement to set you back between £6,300–£22,500.

This price fluctuates so much because there are a lot of things to factor in – the size of the roof, the materials you’re choosing, and the installer you go with.

Want to learn more about the costs of roof replacement? Read on to find out everything you need to know, including choosing an installer and finance options.

If you’ve already got your heart set on a new conservatory roof, we can help you with that too. To make sure you get the best possible deal, don’t settle for the first deal you find. Instead, fill out this short form and we’ll get you in touch with our expert conservatory roof suppliers, who will be in touch with free quotes for you to compare.

What’s on this page?

How much does a replacement conservatory roof cost?

A new conservatory roof replacement can cost anywhere between £6,300–£22,500, depending on the type of roof you currently have and the material you go for.

There are lots of different options when it comes to replacing your conservatory roof, which can all impact the price. A glass roof, for example, will be cheaper than a tiled roof because the job is less labour-intensive, while a solid construction may require pricier structural work.

Want to learn more about the best materials for conservatory roofs? We have everything you need to know in our Guide to the Best Conservatory Roof Materials.

To give you an idea of how much you can expect to pay, we’ve listed the average cost for a replacement conservatory roof with the two most popular materials below:

Type of conservatory roofSize of roofAverage UK cost
Polycarbonate(3,000mm x 3,500mm)£6,300
Glass(3,000mm x 3,500mm)£9,450
Polycarbonate(4,000mm x 4,000mm)£9,600
Glass(4,000mm x 4,000mm)£14,000
Polycarbonate(5,000mm x 5,000mm)£15,000
Glass(5,000mm x 5,000mm)£22,500

Data from Checkatrade, August 2022

Pricing will fluctuate depending on the type of conservatory you have.

It’s also important to remember that conservatory roofing tends to deteriorate over time – from leaks, to draughts, to discolouring – which will, unfortunately, lead to maintenance costs. One way to overcome this is to get a solid conservatory roof.

Conservatory dining room in UK house

The cost of replacing a conservatory roof with a solid roof

Before we get into the nitty-gritty of prices, let’s address what a ‘solid roof’ actually is.

A solid roof can refer to either a tiled or panelled roof. Tiles are lightweight and can add a traditional look to your conservatory, whilst solid panels can create more of a contemporary look.

The average cost for a standard solid conservatory roof replacement is £16,000 – for a larger conservatory, however, prices start at around £30,000. This price tag will, of course, fluctuate depending on the size and type of conservatory you have, as well as the material you go for. And don’t forget to factor in the cost of plastering the interior.

Although solid roofs tend to be more expensive than alternatives, they’re 15 times more thermally efficient than old glass or polycarbonate roofs. Just think about all the money you can save on energy bills.

By replacing a glass or polycarbonate roof with a tiled roof, you’ll be changing the classification of your conservatory from a ‘temporary’ to ‘permanent’ extension. You should consult your local authority’s building control department to check whether you need to apply for planning permission, which currently costs £462 in the UK.

The cost of a replacement glass conservatory roof

Glass is the most popular conservatory roofing material in the UK, which mostly comes down to its affordability. The price of a new glass conservatory roof starts from around £4,350 for a standard 3,100mm by 3,100mm lean-to conservatory.

Type of conservatory roofSize of conservatoryAverage price
Lean-to conservatory3,100mm x 3,100mm£4,346
Lean-to conservatory3,100mm x 3,500mm£4,674
Victorian conservatory3,100mm x 3,100mm£5,740
Victorian conservatory5,100mm x 5,100mm£11,480
Edwardian conservatory3,000mm x 3,000mm£14,760
Edwardian conservatory4,500mm x 4,500mm

Specialist glass panels are also available, including energy-efficient and self-cleaning glass, but this will cost a little extra. That said, you might find that the expense is worth it in the long run, as it can help you save on energy bills.

The cost of a replacement polycarbonate conservatory roof

Polycarbonate is another affordable option for conservatory roof replacement. Although, compared to the likes of glass, this material is not very popular, which mainly boils down to its lack of eco-friendly credentials and the fact it tends to let less light in.

The price of a new glass conservatory roof starts from around £6,300 for a standard 3,000mm by 3,500mm lean-to conservatory.

Naturally, costs will depend on the size and type of conservatory, so check out the table below to get a better idea of prices.

Type of conservatory roofSize of conservatoryAverage price
Lean-to conservatory3,000mm x 3,500mm£6,300
Lean-to conservatory3500mm x 3500mm£7,350
Victorian conservatory4000mm x 4000mm£9,600
Victorian conservatory4500mm x 4500mm£12,150
Edwardian conservatory4000mm x 4000mm£9,600
Edwardian conservatory4500mm x 4500mm£12,150

Information from Checkatrade, August 2022

Is a conservatory roof replacement worth the cost?

Yes, a conservatory roof replacement is definitely worth the cost! Not only will you have a brand new room to enjoy, but you’ll also be able to cut down on energy bills thanks to its improved thermal efficiency. If you go for a glass replacement, you might also be able to cut down on electricity bills by utilising more natural light – although, glass is not very thermally efficient, so it would also mean using more heating in the colder months.

While it can be a pricey procedure, replacing a roof is much faster than scrapping your conservatory altogether and starting over. In fact, your replacement conservatory roof can be watertight in just a couple of days.

As an added bonus, an upgraded conservatory will add value to your property, which is always good news.

You can read about other ways to insulate a conservatory roof on our page.

Can I get the roof replacement done on finance?

Most roofing companies offer finance plans for replacement conservatory roofs, helping you spread the cost over a number of months or years.

Some companies also offer a discount if you opt to pay monthly over 12, 24, or 36 months through a finance scheme.

If you do look into finance options, bear in mind that some companies add interest, which could mean the work will end up paying hundreds or thousands more than it should do.

How to choose the right conservatory roof installer

  1. Check they’re a member of The Conservatory Association – This is a division of the Glass and Glazing Federation (GGF), which promotes technical and health and safety standards, and protects homeowners when buying glass and glazing services
  2. Check if the company is Fensa (Fenestration Self-Assessment) registered – Fensa makes sure that your conservatory is energy efficient. You may even need a Fensa certificate in order to comply with certain building regulations
  3. Compare quotes – There are great national and local installation companies that can help you, but make sure to shop around for the best deal. Typically, you should compare at least three quotes during your research – although, you can speed up the process by filling out this form. We’ll pass your information on to our suppliers, who will be in touch with free quotes for you to compare.


Do you need planning permission to put a solid roof on a conservatory?

The short answer is no, but it comes with a few complications. Since a conservatory is classed as ‘permitted development’, it now no longer needs planning permission. An extension, on the other hand, does need planning permission.

So, what’s the difference? Well, unlike an extension, your conservatory will need to be separated from your home using external walls, and run its own heating system. You will also need to give neighbours the chance to object to changes using the Neighbour Consultation Scheme.

If you’re unsure about whether you need planning permission, it’s always a good idea to contact your local planning office or look at the Planning Portal website.

How long does a conservatory roof replacement take?

A replacement conservatory roof shouldn’t take more than three days to complete, unless you’re going for a solid roof that requires extra structural work – this might add a few more days on top.

All you have to do is answer a few quick questions about your home and let us do the hard work. We’ll pass this information on to our suppliers, who will then be in touch with free quotes for you to compare.

How to get the best price for a replacement conservatory roof

  1. Compare at least three quotes to ensure you get the best price
  2. Compare local and national installers to see the difference in their products and prices
  3. Get quotes in writing and make sure it includes all costs
  4. Don’t always choose the cheapest option – the quality and the energy efficiency rating of the roof will save you money in the long run
  5. Make access to your conservatory easy – if it’s difficult to get to your conservatory, installation companies will quote higher, since it will take them longer to install the new roof

All you have to do is answer a few quick questions about your home and let us do the hard work. We’ll pass this information on to our suppliers, who will then be in touch with free quotes for you to compare.

Next steps

Hopefully, after reading this article, you’ll be feeling more confident about conservatory roof replacement, whether you need one, and how much it will cost you.

Once you’ve figured out the style and material you’d like to go for, it’s time to start shopping around.

Thankfully, we can make this process much easier for you, with our custom-built comparison tool.

Written by:
Beth has been writing about green tech, the environment, and climate change for over three years now – with her work being featured in publications such as The BBC, Forbes, The Express, Greenpeace, and in multiple academic journals. Whether you're after a new set of solar panels, energy-saving tips, or advice on how to reduce your carbon footprint, she's got you covered.
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