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Improve your conservatory roof

  • Cooler in the summer
  • Hotter in the winter
  • Increased property value

Conservatory roof replacement costs

  • Replacing a conservatory roof can cost anywhere between £2,350-£22,500
  • Glass is the most popular conservatory roofing material in the UK
  • Most roofing companies let you spread the cost over a number of months or years
  • You don’t need planning permission to put a solid roof on a conservatory

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 £2,350–£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 £2,350–£22,500, depending on the type of roof you currently have and the material you go for. Here’s some of the factors that affect the cost of replacing a conservatory roof:

  • Size of the conservatory — the bigger your conservatory, the more resources are needed to replace the roof, increasing the price
  • Materials needed — polycarbonate for example is less expensive to replace than glass
  • Labour — less labour is involved in replacing glass roofs than tiled, making it cheaper overall 
  • Conservatory style — a lean-to conservatory will cost less to replace than a Victorian style conservatory

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 a clearer idea of how much you can expect to pay, we’ve listed the average cost for a replacement conservatory roof with the 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)£14,400
Polycarbonate(5,000mm x 5,000mm)£15,000
Glass(5,000mm x 5,000mm)£22,500

Data from Checkatrade, 2024

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

Is a conservatory roof replacement worth the cost?

Yes, replacing your conservatory roof is absolutely worth the cost. No one wants to sit in a tired conservatory, but there are many tangible benefits that make replacing your conservatory roof a must:


  • You’ll reduce your energy bills thanks to improved natural light
  • It’s much quicker and cheaper than replacing your conservatory altogether
  • A refurbished conservatory can increase the value of your home
  • You can significantly improve insulation, depending on materials used

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

What is the cheapest material for a conservatory roof?

Replacing a conservatory roof can be expensive, so you might want to look into what the cheapest materials available are. Opting for cheaper materials can potentially save you thousands, so it’s worth looking into. 

Your cheapest option is polycarbonate, which is a common material used in conservatory roofs. Its low production cost has made polycarbonate a popular choice, but its drawbacks are substantial — poor thermal and sound insulation, short lifespan (around 10 years), and a tendency to discolour after being exposed to the elements. 

Second cheapest is glass, although depending on the size of your conservatory and what level of glazing you choose, glass can quickly become an expensive choice.

However, the benefits are numerous. You’ll get much better insulation (sound and heat), increased energy efficiency, and be able to see the outside world (polycarbonate is typically clouded).

Lastly you have tiled conservatory roofs, which are the most expensive. You do get some of the most substantial benefits with tiled roofs though, including lower maintenance, high durability, and the best insulation levels. 

How long does a conservatory roof replacement take?

A replacement conservatory roof can take several days to a week to complete, depending on the materials and complexity of the installation. Replacing a polycarbonate roof, for example, will take a lot less time than replacing a tiled roof.

Ready to replace your conservatory roof? We can help you compare prices. 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.

The cost of a replacement polycarbonate conservatory roof

Polycarbonate is the cheapest 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 polycarbonate conservatory roof is 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 2024

The cost of replacing a 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 is around £9,450 for a standard 3,000mm by 3,500mm 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 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 £19,000 – 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.

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

You do not need any planning permission if you’re simply replacing a roof on an existing conservatory. A conservatory is a ‘permitted development’, meaning you can replace the roof or make any aesthetic changes at will. 

However, if you’re extending the size of your conservatory, you’ll need planning permission. Even where you don’t need planning permission though, you should still 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 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.

Can I get the roof replacement done on finance?

Yes, you can get your conservatory roof replacement done on finance — most roofing companies allow this and it can be a great way to 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.

Using finance options does usually mean paying interest, which means your roof replacement might end up costing you hundreds or even thousands more than if you paid for it upfront.

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.

Summary and next steps

  • The cost of replacing your conservatory roof depends on many factors
  • Polycarbonate is the cheapest material, but the least efficient 
  • You can reduce your energy bill by replacing your conservatory roof, thanks to improved thermal efficiency
  • Replacing your conservatory roof will take several days to a week

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. We’ll connect you with our trusted installers, who’ll get back to you with obligation-free quotes for you to compare.

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.
Reviewed by:
Max joined The Eco Experts as content manager in February 2024. He has written about sustainability issues across numerous industries, including maritime, supply chain, finance, mining and retail. He has also written for  City AM, The Morning Star and the Daily Express.
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