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Conservatory roof replacement cost guide

Conservatories bring the outdoors inside, offering panoramic views of the changing seasons and flooding adjacent indoor spaces with natural light. If you’re lucky enough to have one, you’ll want to keep it in good shape, which could mean adapting the design and replacing the roof. But how much does conservatory roof replacement cost?

Replacing an old plastic or glass roof can do wonders for the appearance of your conservatory. It can also make all the difference to the insulation of the room, helping to retain the heat in winter and keep it out in summer.

Today many homeowners are seeking a replacement for their polycarbonate conservatory roof. Due to the nature of the work and the implications of small mistakes, conservatory roof replacement is a job best left to a professional.

We’ve put together a practical guide conservatory roof costs to help you budget for the task at hand.

Type of conservatory roofSize of roofPrice - Range LowPrice - Range HighAverage UK Cost
Polycarbonate(3000mm x 3500mm)
Glass(3000mm x 3500mm)
Polycarbonate(4000mm x 4000mm)
Glass(4000mm x 4000mm)
Polycarbonate(5000mm x 5000mm)£4,480
Glass(5000mm x 5000mm)£4,875 £5,570£5,222

The average conservatory roof replacement cost

The costs of conservatory roof replacement vary, ranging on average between £2,250 to £7000. It’s sensible to earmark at least £4,625 for the project.

While there is an upfront investment required, it’s much more cost-effective than replacing the entire conservatory.

What’s more, modern conservatory roofs that use more substantial materials have been proven to save homeowners an average of £200 per year on utility bills.

While the average cost of conservatory roof replacement is £4,625, the price-tag for the project will ultimately depend on a number of factors.

Costs will be determined by the type of the roof, size of the conservatory and the material you choose for the roof replacement. The most common materials are polycarbonate, tile and glass. Each has its own benefits, drawbacks and typical cost.

Replacement glass conservatory roof cost

Offering high energy efficiency and an appealing aesthetic, glass conservatories are widely regarded as the best choice. Naturally, the price of a glass conservatory replacement roof is typically more expensive than polycarbonate.

The price of a new glass conservatory roof starts from around £2,610 for a lean-to conservatory (sized 3000mm x 3500mm). For an average size of 4000mm x 4000mm, the average cost is just above £5000.

While modern polycarbonate roofs have been improved to retain heat, glass outperforms plastic in keeping your conservatory warm in winter. Your choice will usually depend on the budget you have put aside for the job.

Cost savings from energy bills are an obvious draw, but another benefit is that glass is less prone to weather damage. Ultimately, that means less maintenance and a longer lifespan for your conservatory roof. Glass also has the advantage of not discolouring over time, which you can’t say about polycarbonate or tile, both of which are a good home for moss, lichen and mould.

The cost of replacing a polycarbonate conservatory roof with glass

Accounting for different sizes, the cost of upgrading to a glass replacement roof can stretch a smaller budget by around 10%. Small polycarbonate roofs cost from around £2,355 while a similar-sized glass roof can cost up to £3,175.

Type of conservatorySize of conservatoryPrice - Range LowPrice - Range HighAverage UK Cost
Lean-to conservatory
3000mm x 3500mm
Lean-to conservatory
3500mm x 3500mm
£2,505 £3,180£2,842
Victorian conservatory4000mm x 4000mm
Victorian conservatory4500mm x 4500mm £4,590£5,345£4,945
Edwardian conservatory4000mm x 4000mm£4,480 £5,120£4,800
Edwardian conservatory4500mm x 4500mm£5,035 £5,690£5,325

Replacement polycarbonate conservatory roof cost

The price of polycarbonate conservatory roofs makes this material a popular choice for homeowners on a budget.

It’s also ideal for those looking to enhance their security, as polycarbonate is harder to break than glass. If used correctly, this type of roof will reflect light back into your living space with less of a glare.

Although they lack the natural insulation that glass roofs offer, this problem is quickly resolved with solar inserts for polycarbonate roofing.

The result? A cosy home through the colder months without the pricetag of a glass roof.

Naturally, costs will depend on size. For a conservatory roof that is 4000mm by 4000mm, the price will fall in the range of £4,345 – £5,005.

Conservatory tiled roof replacement cost

Thinking about replacing your glass conservatory roof with a solid, tiled roof? On average, the price you can expect to pay for a smaller conservatory (below 4000mm by 4000mm) is £4000. For a larger conservatory roof, replacing glass or plastic with tiles will cost around £6000.

It’s worth keeping in mind that these costs are an average estimate, and prices will vary depending on your location. Costs in the capital and bigger cities will reflect the higher competition from suppliers.

Lightweight tiles handle temperature extremes more efficiently than glass or polycarbonate, offering shade in summer and retaining warmth during winter. This type of renovation can be a game-changer, allowing you to transform your conservatory into an extension to be used all year round. In doing so, you change the classification of your conservatory from a temporary to a permanent extension.

Planning permission may need to be obtained, which currently costs around £460. Ask your local council whether you will need to apply so you can add a possible planning fee to your budget.

Polycarbonate roof replacement

Lean to conservatory roof replacement cost

Lean to conservatories are the most common type of conservatory. A lean-to conservatory typically has three glass sides, with an exterior wall of the house forming the fourth. For this reason, they tend to be a little cheaper to build compared to Edwardian or Victorian styles.

They feature a simple angled roof that slopes downward, allowing rain to run right off the top. They also tend to have slightly smaller roofs than traditional builds, so there’s less material to replace which makes the replacement cheaper still.

The cost of a new roof for a lean-to conservatory varies depending on size and materials. For an average conservatory size of 300cm x 300cm, the cost is £2,600 for polycarbonate and £2,800 for glass.

Solid conservatory roof replacement cost

Transform the look and feel of your property by replacing a glass roof in your conservatory with a solid tiled structure. An insulated conservatory roof is an ideal solution for homeowners seeking to enhance energy efficiency.

With a solid roof, you can turn your conservatory into a premium living space to be used in every season. To keep the room feeling light and your energy bills low, add a skylight to control ventilation. With a range of materials to choose from, you can boost your home’s kerb appeal and refresh the aesthetic of the exterior.

Conservatory roof cost

For a standard solid conservatory roof replacement, the average cost is £4,100. For a larger conservatory, prices start at around £5,500 to replace a glass or polycarbonate roof with a tiled structure. If you intend to have the ceiling plastered, don’t forget to factor this into the total costs of the project.

Conservatory roof replacement FAQs

How long does a conservatory roof replacement take?

It shouldn’t take more than three days for your tradespeople to get the job done, unless you’re opting for a solid roof that requires extra structural work.

What’s the best material for home security?

Tiles are probably the best bet for home security, though polycarbonate is still tougher to break than glass.

What’s the most eco-friendly material for a conservatory roof replacement?

Polycarbonate roofs have the most eco potential as you can retrofit solar inserts.

Lean to conservatory roof cost

Conservatory roof replacement cost checklist

  • Conservatory roof replacement is a cost-effective way of improving the look and functionality of your property.
  • The average cost for a polycarbonate conservatory roof is £4,625, but size and type of conservatory will factor into the cost.
  • Glass is the most popular choice of conservatory roof material, but polycarbonate is the most cost-effective.
  • Replacing a glass or polycarbonate conservatory roof with solid tiles will transform the space into a permanent extension, which may require planning permission.
  • Due to the delicacy and expertise required for correct installation of conservatory roofs, it’s best to hire a professional for the job.

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