How Much Does A Replacement Conservatory Roof Cost in 2021?

replacement conservatory roof cost

How Much Does A Replacement Conservatory Roof Cost?

Conservatory roof prices vary by material and size. Everyone knows this, but you may want to see some specific figures. Here’s a simple chart to help you estimate the cost of replacing an old conservatory roof:

MaterialsPrice per m2Cost for 3m x 5m RoofLifespan
Polycarbonate RoofPolycarbonate Panels with uPVC frames£205 – £300£3500 – £450010 years
Glass RoofGlass Panels with uPVC, aluminum, or timber frames£305 – £352£4575 – £528010 – 20 years
Solid Tiled RoofMetal, concrete, vinyl, slate, or clay tiles£445 – £650£6675 – £975020+ years

Conservatory Roof Replacement Cost

Replacement conservatory roofs vary in price because there are so many different options available to you, the homeowner. Let’s break this down into a few simple categories so you can understand the costs and make a wise choice.

Polycarbonate Conservatory Roof Prices

Polycarbonate roofs are the cheapest option for replacing your conservatory roof. The materials are easy to work and require fewer framing skills, so labour is less expensive. The individual panels are also less expensive than a comparable glass panel or area of tile. Polycarbonate is a brilliant choice for a new conservatory roof for a smaller living space or lean-to conservatory room. The price per square metre ranges between £205 to £300 for a full installation.

Glass Conservatory Roof Prices

Replacing your conservatory roof with a new glass conservatory roof will add value to your home and can be very energy efficient. A new glass conservatory roof costs between £305 and £352 per square metre to install, but the higher price is worth it because of two significant advantages. First, glass is much easier to clean and maintain than polycarbonate. Second, a glass conservatory roof using double glazed glass has a longer lifespan and greater value than a similar polycarbonate surface,

Solid Conservatory Roof Prices

A solid roof has the longest lifespan, along with the best insulation properties. A solid tile roof is also the most secure and offers the most privacy. These benefits mean a higher price tag.

A solid conservatory roof can incorporate glass panels as skylights. These are beautiful features, but can increase the price of a replacement roof. Different tile materials also affect the price, with concrete being the cheapest and slate the most expensive.

For a small conservatory, the price for replacing the roof may be at least £4,000. For a larger size conservatory, the replacement conservatory roof cost can start at £6,000 because of the supports needed for a longer roof span. The price per square metre varies from £445 – £650.


replacement conservatory roof cost

Is A lower Price Worth It For Replacement Conservatory Roof Cost?

Many of us shop around the Internet looking for what we want at the lowest price possible. Choosing the cheapest isn’t wise when considering conservatory roofs. Choosing a low-quality option could cause leaks, draughts, or having to replace the roof prematurely. Choosing a cheaper option may even result in damaged decor, walls, flooring, and even furniture and possessions. Here are three reasons a cheaper choice may be unwise:

  • Cheaper materials and installations may leak, causing damage to your property and requiring costly repairs.
  • Less expensive options may not provide adequate comfort control, making your living space unusable for parts of the year.
  • Cut-price choices have shorter lifespans and may need to be replaced much sooner, causing further costs.

A conservatory can add around 5% to the value of your home. For a moderate £200,000 home, this is about £10,000. However, a badly built or poorly designed space can decrease the value of your home. The cheapest solution may end up costing the most money because it lowers the value of your home, is not always comfortable, and needs repairs frequently.


managing the replacement conservatory cost

What Factors Affect Replacement Conservatory Roof Cost?

Size is the obvious factor when considering the replacement conservatory roof cost. There are a few other factors. Here is a list of the things that determine cost, ranked from most important to least important:

  • Size. More materials means more cost. This affects the number of panels, but also the supports and frames.
  • Design. Lean-to designs are less expensive than options that include a pitched roof.
  • Materials. Polycarbonate is cheapest, glass is a bit more, and a solid surface is the most expensive option.
  • Frames. Replacing the windows or upgrading to a better framing material is going to add to the cost.

polycarbonate replacement conservatory roof cost

Whats The Difference In Conservatory Roof Replacement Costs for Polycarbonate Roofs and Glass Roofs?

Polycarbonate conservatory roof replacement cost. The pros of polycarbonate roofing are the light weight and UV filter. The cons to a polycarbonate conservatory roof are the poor insulation from environmental noise and low thermal insulation. The lifespan of a polycarbonate conservatory roof is not as long as other materials, so the panels may need to be replaced sooner.

Glass conservatory roof replacement cost. A glass panel is more expensive than its polycarbonate counterpart. However, it lets in more natural sunlight than polycarbonate. This could have its drawbacks during the summer, but blinds can offset the extra warmth and UV tinting can keep the temperature comfortable. A glass roof will have better insulation with double or even triple glazing. Glass does not need replacing as often as polycarbonate conservatory roofs.

What about the cost? For a polycarbonate lean-to roof, 3000mm x 3000mm, you can expect to pay £2,450 to £2,800. The replacement conservatory roof cost of a glass roof of the same size would be around £2,750 to £3,175. These prices are estimated and were approximate at the time of writing.


Tiled Replacement Conservatory Roof Costs

What is the Cost of a Solid or Tiled Roof?

A solid roof system is a brilliant solution for a new conservatory roof. Here are a few reasons these are superior choices:

  • Security. Solid roofs are more secure because they are tied into the building structure thoroughly.
  • Efficiency. Tiles with insulation are the most kind to your energy bills because of their thermal stability.
  • Beauty. Tiles that match your home are the best solution for improving the look of your extra living space.

The cost of installing a new tiled conservatory roof is between £445 and £650 per square metre. Tile material will have a big impact on the price, with concrete tiles being half the cost of clay tiles and around 75% lower than slate tiles. We supply and install Ultraframe products. These use a composite tile to achieve a lightweight and durable surface.

Does Roof Style affect the Conservatory Roof Replacement Cost?

In short, yes. Replacing a conservatory roof costs more depending on the style of roof. There are a few reasons for this:

  • Some conservatory roof styles, such as the Victorian and Edwardian styles, use more panels and require more structure. This increases the materials needed for a roof replacement.
  • Material changes, increases in roof pitch, or changing styles may require a stronger foundation if the weight of the conservatory increases.
  • The roof type may also increase the cost if you are changing from a polycarbonate roof to a glass roof or solid roof in order to build a specific type of conservatory.

Labour costs may also increase for more complicated conservatories. Conservatory style may increase labour costs if the new style is more complex because more tradespeople may be needed to complete the job successfully.

Let’s break down different styles so you can plan for the cost if you choose to replace your conservatory roof.

Lean-To Replacement Conservatory Roofs


replacement conservatory roof cost for lean-to conservatory

A lean-to conservatory is the most basic of conservatory styles, featuring a square or rectangular shape with a sloping roof.

We bolt the highest point of the roof to the property, this gives the effect that the structure looks like it is leaning up against the building. This gives the style its name ‘Lean-To’. Because the roof is basic and flat, most often with no complicated details, it has the lowest conservatory roof replacement cost.

The replacement conservatory roof cost for a polycarbonate roof of size 3000mm x 3000mm would be roughly £2,450 to £2,800 approximately. The replacement conservatory roof cost of a glass roof of the same size would be around £2,750 to £3,175 approximately.

Victorian Conservatory Roof Replacement


replacement conservatory roof cost for victorian conservatory

A Victorian conservatory gets its name from the architectural influence of the Victorian era. It also features a square or rectangular shape and one of the sides will feature a bay window.

The bay window will be comprised of either three or five facets. The glass facets give the appearance that the side is curved.

The replacement conservatory roof cost for a Victorian conservatory is of course higher than that of a lean-to conservatory, because of the curved side. The roof on the curved side needs triangular panels, the amount of triangular panels depends on the number of facets in the bay.

The complex features in the design make Victorian replacement conservatory roof costs that much more expensive.

The replacement conservatory roof cost for a Victorian conservatory roof with a polycarbonate roof system (4000mm x 4000mm) would be roughly between £4,450 and £5,150.

For a Victorian replacement conservatory roof of a similar size with a glass roof, the replacement conservatory roof cost is £4,800 to £5,530.

Edwardian Conservatory Roof Replacement


replacement conservatory cost for edwardian conservatory

The Edwardian conservatory is easily recognised by its characteristic pitched roof. The stunning pitched roof is made up of inclined planes of varying pitches that meet at their highest points at the ridge, forming an inverted V shape.

One advantage of an Edwardian conservatory roof replacement is that the angle of the pitch can be altered to change the height of the roof to suit…

The replacement conservatory roof cost for an Edwardian roof with polycarbonate panels (4000mm x 4000mm) would be roughly between £4,500 to £5,230.

For an Edwardian roof of a similar size with a glass roof, the cost goes would be roughly £4,990 to £5,630.

Gable Fronted Conservatory Roof Replacement


replacement conservatory roof cost for gable roof

Inspired by Georgian architecture and characterised by a Gable roof the Georgian Conservatory makes a statement of imposing grandeur.

The Georgian conservatory roof features two inclined planes along the sides which meet in a triangle shape at the front of the structure which creates the grand design.

The triangle at the front of the conservatory can be glazed or infilled. The Gable end is also known as a sunburst and is often decorated as such. The choice of glazing and design will certainly affect the replacement conservatory roof cost.

The replacement conservatory roof cost for a small (3000mx 3000m) Gable roof can start from £2,500 and can easily exceed £5,800 for a glass roof system. As previously stated, these prices are rough estimates and the price can vary depending on chosen features, and who installs the replacement conservatory roof for you.

P-Shaped Conservatory Roof Replacement


replacement conservatory roof cost for P shaped conservatory

The P-shaped conservatory is a combination of a lean-to conservatory and a Victorian conservatory. The two portions can be either equal in size, or one-part can be bigger than the other, depending on how you choose to design it.
These conservatory roofs require a more complex roof than the simple lean-to or a Victorian conservatory. This of course shows in the replacement conservatory roof cost of a P-Shape conservatory.

T-Shaped Conservatory Roof Replacement


replacement conservatory roof cost for T shaped conservatory

The T-shape conservatory is most suited to large properties. It is easily recognisable by its T-shape which gives it the name. The T-shape is created using a rectangular room against the wall of the house, which features a smaller projection coming from the center.

The T-shaped conservatory can be comprised of a lean-to, a Victorian or Edwardian, even a combination of these. The replacement conservatory roof costs of a T-shaped roof really depends on the style chosen, there are so many variables with a T-shape roof.

Does a Roof Lantern Affect the Replacement Conservatory Roof Cost?

A roof lantern comes in all shapes and sizes. Usually, a Lantern is a smaller glass roof mounted on a flat roof such as a GRP warm roof. Roof lanterns let natural light into flat roof extensions, they can also be flat or pitched. The size and material of the lantern roof will ultimately determine the final price.

What Other Factors Affect the Replacement Conservatory Roof Cost?

Apart from the cost of the actual conservatory roof itself, the replacement conservatory roof cost includes the installation. The installer you choose will have a bearing on the replacement conservatory roof cost. Again the same is true when picking an installer, the lowest price isn’t the best approach. A poorly installed roof can be as bad and problematic as a poorly designed or manufactured roof. Choose an experienced installation team that knows what they are doing.

In order to get a fair price, Best Glaze recommends getting quotes from three different installers. Try and choose a local installer and a large company. Just keep in mind that a National company isn’t always the best. A lot of companies tend to treat customers poorly once they have paid, customer service is poor.

Getting three different prices should help you make an informed choice and get the best replacement conservatory roof cost. You should also get a detailed breakdown of the replacement conservatory roof cost so that you are clear exactly what you are paying for.

Having a breakdown of costs will highlight the expensive aspects of the replacement conservatory roof cost. This way, you have the option to keep or change details to suit your budget.


Best Glaze are Ultraframe installers, we supply and install Ultraframe conservatory roof products throughout the whole of Cornwall and Devon. We also use Durabase conservatory base to build bases for extensions and conservatories, the modern way to build a thermally efficient and strong conservatory base. If you are looking for a replacement conservatory roof in Cornwall or Devon then please get in touch using the ‘Contact’ tab.

What Is The Cheapest Replacement Conservatory Roof?

Polycarbonate lean-to roof conservatory

The cheapest replacement conservatory roof would be a Lean-To Polycarbonate roof, its simple design and cheap materials make this the cheapest replacement conservatory roof cost wise in the short term. Long term it is not such a good investment. Polycarbonate has poor thermal insulation, poor noise insulation and doesn’t have a long lifespan.

What Is The Best Conservatory Roof Replacement?

replacement conservatory roof

To put it simply, the best conservatory roof replacement is the one that suits your needs, your property and your budget. There are a lot of variables that affect what may be best for you, your home or your needs. If you would like some free advice then please, feel free to get in touch.

Do I need Planning Permission For A Replacement Conservatory Roof?

Building Regulations have changed with regards to replacement conservatory roofs, and you might not need planning permission for your replacement conservatory roof in England. Even though you may not need planning permission for your replacement conservatory roof, you may still need to use the neighbour consultation scheme. The neighbourhood consultation scheme is applicable to single-storey rear extensions, and means you should notify your local planning authority of your proposed build or eplacement conservatory roof. Your local planning authority will notify your neighbours about yourplanned project allowing them to raise any objections. Home owners in neighbouring properties will have 21 days to object to the planned build and if no objections are raised within that timeframe, then you can continue with your project.

There are certain factors which mean that you might need planning permission for your proposed replacement conservatory roof:
You plan to replace a translucent (glass or polycarbonate) conservatory roof for a solid roof, then you must obtain Building Regulatory Approval.
Changing a translucent roof for a solid replacement tiled conservatory roof is classed as a change of use, because the structure goes from being temporary, to permanent under planning law.
When planning a replacement conservatory roof, your conservatory may no longer fall under the Permitted Development rules, and might need planning permission.