How much does it cost to replace a conservatory roof?

The cost to replace a conservatory roof ranges from £2,000 to £8,000. The price is dependent on the size of the roof, the style and the material.

For example, a glass conservatory roof will cost more than a polycarbonate roof. Similarly, a classic Victorian-style roof will cost more than a lean-to. While it is difficult to give an average, homeowners should set aside around £3,000 to £5,000 for a small to medium-sized roof and £6,000 to £8,000 for a large roof.

Cost to replace conservatory roof

The cost to replace a conservatory roof comes down to the following factors:

  1. Location: Labour costs vary across the country, with London and the south-east charging more than the north.
  2. Size of the roof: The bigger the roof, the more materials, labour and time required, resulting in a higher price.
  3. Style of roof: The style of roof plays a big role in the cost of the work; for example, a lean-to conservatory roof is cheaper than a Victorian or Edwardian style roof.
  4. Roofing material: The biggest cost driver is the material you opt for. The cheapest material is polycarbonate. Glass is a more expensive choice and roofing tiles are the most costly.

Another cost driver to consider is the company. A large firm with an established reputation will charge more than a small company with fewer overheads and a smaller client base. Moreover, smaller companies are often under the VAT threshold, meaning they don’t add 20% to the cost.

As for roof style, there are three main types of conservatory roof.

  1. Lean-to: A lean-to is a single slope roof with three straight sides and its upper edge adjoining or ‘leaning’ against an existing house wall.
  2. Victorian: A Victorian roof is a classic style with a faceted appearance and high, ornate roofs. A typical example will have a bay fronted shape with three or five sides and an angled roof with detailing.
  3. Edwardian (or Georgian): A classic style roof with a more understated appearance than a Victorian style. The main difference is the square or rectangular design of the Edwardian conservatory.

Polycarbonate conservatory roof

Polycarbonate is the most affordable conservatory roof material. However, the low cost is reflected in its thermal efficiency.

Polycarbonate roofs are renowned for creating an almost uninhabitable environment – being too cold in the winter and too warm in the summer. While its efficiency has been improved upon, it continues to be outperformed by glass or solid options.

Another downside is the loud, disruptive noise it makes during rainfall. Nevertheless, it continues to be a popular choice for a low budget.

Style Size Average cost
Lean-to 3m x 3m £2,000 – 2,500
Lean-to 4m x 4m £2,500 – 3,100
Lean-to 5m x 5m £2,700 – 3,300
Victorian 3m x 3m £3,500 – 4,000
Victorian 4m x 4m £4,300 – 5,000
Victorian 5m x 5m £4,600 – 5,300
Edwardian 3m x 3m £3,800 – 4,200
Edwardian 4m x 4m £4,400 – 5,000
Edwardian 5m x 5m £5,000 – 5,500

Glass conservatory roof

A glass conservatory roof is by far the most popular material – and understandably so. Often referred to as an ‘extension of nature’, it floods the conservatory with natural light, offers an unmatched connection to the outside world and is aesthetically pleasing.

While specialist options are available, including self-cleaning and energy-efficient panels, a standard glass finish will resolve the issues of noise pollution and energy efficiency presented by a polycarbonate roof and offer a room that can be enjoyed year-round. The only real drawback of a glass roof is the price, with it being considerably more expensive.

Style Size Average cost
Lean-to 3m x 3m £2,600 – 3,100
Lean-to 4m x 4m £3,000 – 3,500
Lean-to 5m x 5m £4,000 – 4,500
Victorian 3m x 3m £4,500 – 5,000
Victorian 4m x 4m £4,800 – 5,300
Victorian 5m x 5m £5,100 – 5,600
Edwardian 3m x 3m £4,800 – 5,300
Edwardian 4m x 4m £5,000 – 5,500
Edwardian 5m x 5m £5,300 – 5,800

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Tiled conservatory roof

A tiled conservatory roof is an increasingly favoured choice for homeowners. The reason being, a tiled roof turns the space into a ‘real extension’ that can be used the entire year.

It is the best answer to a thermally efficient conservatory, isn’t prone to condensation the way glass and polycarbonate are and has drastically improved acoustics.

The nature of tiling means you won’t get as much natural light and will lose the traditional look of a conservatory. That said, if you want the room to blend in with the property’s overall aesthetic, then it is the best option.

A tiled conservatory roof costs, on average, between £7,000 and £11,000, making it the most expensive option.

If you are planning to replace a translucent conservatory roof with a solid option, then you will need to submit a building regulations application. Conservatories are traditionally not designed to carry the weight of a solid roof, meaning there is a possibility of movement or even collapse.

Therefore, building regulations approval is needed to make sure the conservatory’s structure can support the weight of the new, solid roof.

On top of this, you may also require planning permission. Adding a solid roof will potentially change the classification of your conservatory from a ‘temporary’ to a ‘permanent’ extension. If so, you’ll need permission to authorise the change of use.

However, this can differ on a case-by-case basis so it is best to consult your local authority’s building control department, which will consult you on whether you need to apply or not.

Is it worth replacing a conservatory roof?

Too cold in the winter and too hot in the summer.

Ring a bell?

Extreme temperatures are the main reason why most homeowners decide to replace their conservatory roof. A new, thermally efficient roof can transform the space from a time-limited or unusable room into a year-round haven. What’s more, it can save you a lot of money on your energy bills. But there are other reasons why you may consider replacing your conservatory roof.

  • The roof is leaking
  • There is damp or mold
  • To reduce condensation
  • To improve the aesthetics
  • To improve the acoustics
  • To reduce sun glare
  • To increase the value of your home

For more information on how to choose and hire a contractor, read our hiring guide.

Or, if you’re ready to hire a roofing professional, post a job now to request quotes from roofers near you.

Conservatory roof cost FAQ

How long does it take to replace a conservatory roof?

The average time to replace a small conservatory roof is between one and two days. For larger, more complex designs the average time is around three to five days. However, if you’re installing a solid roof and require structural work, you should prepare for the work to take longer, with the average time around a week.

Do I need to apply for building regulations approval to replace my conservatory roof?

Conservatories are exempt from building regulations if:

  • They are built at ground level and less than 30 square metres in floor area.
  • The conservatory is separated from the house by external walls, doors or windows.
  • The conservatory has an independent heating system with separate temperature and on/off controls.
  • Glazing and any fixed electrical installations comply with the applicable building regulations requirements

Most conservatories naturally comply with building regulations, but it is always worth checking with your roofer before installation just to be safe. For example, if you are planning to reroof with a solid roof, you will need to apply for building regulations approval to ensure your existing conservatory structure can support the weight of the new roof.

Do I need planning permission to replace my conservatory roof?

You don’t normally need planning permission to replace your conservatory roof. However, if you are replacing a glass or polycarbonate roof with a tiled one, this is classed as a ‘change of use’ which may require planning permission. Check with your local authority’s building control department before the job commences.

How long does a conservatory roof last?

A polycarbonate or glass conservatory roof lasts an average of 20 years, while a tiled conservatory roof can last up to 50 years.

Can I get my conservatory roof replacement on finance?

Yes, most conservatory roofing companies offer finance plans for replacement work. You can always ask any company or contractor quoting you whether they offer a finance scheme.

Is there anything I should ask my contractor?

You should always opt for a company that is a member of The Conservatory Association. This is a division of the Glass and Glazing Federation (GGF) which:

  1. Protects homeowners when they buy any form of glass or glazing services.
  2. Promotes technical and health and safety standards. If you’re opting for a solid roof, you will want to consider organisations such as the National Federation of Roofing Contractors instead.

You should also check if the company is FENSA registered. FENSA specialises in ensuring your conservatory is energy efficient. In some cases, FENSA certificates are needed to comply with building regulations.

Can I replace my conservatory roof myself?

It is highly recommended that you hire a professional to replace your conservatory roof. Roofing work is dangerous and there is a risk you could be worse off if the work doesn’t quite go to plan.

To get quotes from roofers near you – post a job now.

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