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Replacing a conservatory roof is often less disruptive than rebuilding the entire structure, but it can make a big difference to comfort, energy efficiency and how you use the space.

Many homeowners start thinking about replacing their conservatory roof when the room becomes too hot in summer, too cold in winter, or simply starts to look tired. In most cases, the structure underneath is still sound, it’s the roof that needs upgrading.

In this guide, we explain typical conservatory roof replacement costs in the UK, what affects the price, how long the work usually takes, and when it’s worth getting professional advice.

How much does it cost to replace a conservatory roof in the UK?

In the UK, the cost to replace a conservatory roof depends mainly on the size of the conservatory and the material you choose. For a typical project, the average total cost is around £10,000, although larger or more complex replacements can exceed this.

Costs tend to vary depending on the size of your conservatory and the type of roof material you opt for.

For example, a small polycarbonate roof (3x3.5m) might cost around £6,300, while replacing a large glass conservatory roof (4.5x4.5m) could cost £18,225 or more.

Compare conservatory roof replacement quotes near you

For a clearer idea of what it might cost to replace your conservatory roof, search your postcode to compare quotes from checked, reviewed conservatory roof specialists working in your area.

Conservatory roof replacement costs at a glance

• Average conservatory roof replacement cost: around £10,000

• Typical price range: £6,300 to £18,225+, depending on size, materials and structural requirements

• Most affordable option: polycarbonate roofs are usually the lowest-cost replacement

• Highest-cost option: glass or tiled roofs typically cost more but offer better insulation and year-round comfort

• Typical project duration: most roof replacements take two to five days, depending on size and complexity

• Labour costs: roughly £400 per person per day, or £50 per hour

• Planning and compliance: replacing a conservatory roof with a solid or tiled system may require building regulations approval

If your budget can't stretch to a glass or tiled roof, you could pay to install heat reduction film to reduce the solar heat and glare during the hottest months. A conservatory installer can give you an exact quote.

Average conservatory roof replacement cost per square metre

In many cases, installers price conservatory roof replacement based on the total roof area. This helps explain why costs increase quickly as conservatories get larger.

Typical roof replacement costs per square metre are:

• Polycarbonate roof: around £600 per m²

• Tiled roof: around £750 per m²

• Glass roof: around £900 per m²

These figures are useful for estimating the cost of non-standard conservatory sizes or extensions that fall outside typical dimensions.

Conservatory roof replacement costs by material type

The material you choose affects more than just the price of the roof itself. It also influences:

• Structural requirements

• Installation time

• Insulation performance

• Long-term energy efficiency

• Whether building regulations approval is needed

That’s why two conservatories of the same size can have very different replacement costs.

Polycarbonate conservatory roof replacement costs

Polycarbonate is usually the most affordable option and is commonly used for older conservatories.

Typical cost range:

• From around £6,300 for a small replacement

• Up to around £12,150 or more for larger structures

What to expect:

• Lower upfront cost

• Lightweight and quick to install

• Less insulation compared with glass or tiled systems

This option is often chosen when budget is the main consideration or when the conservatory is used occasionally rather than as a full living space.

Tiled conservatory roof replacement costs

Tiled roofs are becoming increasingly popular because they transform a conservatory into a more comfortable, year-round room.

Typical cost range:

• From around £7,875 for smaller conservatories

• Up to around £15,188 or more for larger replacements

What to expect:

• Improved insulation and temperature control

• Quieter during heavy rain

• Heavier structure, which may require building regulations approval

Many homeowners choose a tiled roof when upgrading an older conservatory to make it feel more like a permanent extension.

Glass conservatory roof replacement costs

Glass roofs typically sit between polycarbonate and tiled systems in terms of appearance and performance.

Typical cost range:

• From around £9,450 for smaller conservatories

• Up to around £18,225 or more for larger structures

What to expect:

• Modern appearance and strong natural light

• Better insulation than polycarbonate

• Higher cost than lightweight materials

Glass is often chosen when maintaining a bright, open feel is a priority, particularly for garden rooms or dining spaces.

Budget reality check

The size of your conservatory, the type of roof you choose, and the condition of the existing structure will all influence the final price.

Smaller replacements often stay close to the lower end of the range, while larger structures or complex roof shapes can increase the cost significantly.

Structural upgrades, insulation improvements or access challenges can also push prices higher.

What affects the cost of replacing a conservatory roof?

Several factors influence how much you’ll pay for a replacement conservatory roof, including:

• Size of the conservatory: the size of your conservatory roof has the biggest impact on cost

• Type of roof material: different materials (polycarbonate, tiled, glass) vary in price, performance and lifespan

• Structural upgrades: some older conservatories need additional strengthening before a heavier roof can be installed, particularly when upgrading from polycarbonate to a tiled or solid roof

• Accessibility: difficult access, limited working space, or the need for scaffolding can increase labour time and costs

• Location: labour rates vary by region, with higher costs typically seen in cities and the South East

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What’s included in a conservatory roof replacement quote?

Most quotes will include:

• Removal of the existing roof

• Supply of new roofing materials

• Installation and fitting

• Basic insulation and weatherproofing

• Waste removal and site clean-up

• Labour costs

For more complex projects, quotes may also include structural work, electrical adjustments or ventilation improvements.

Additional costs to budget for

The headline price covers the main work, but there are a few extra costs worth planning for.

Common additional costs include:

• Making good internal finishes: plastering, decorating or minor repairs may be needed after installation

• Planning permission or building regulations: in some cases, particularly when installing a tiled roof, approval fees may apply. For example, planning-related costs can be around £460

• Access equipment: scaffolding or specialist lifting equipment may be needed for larger conservatories

• Upgrading insulation or ventilation: improving thermal performance can increase upfront costs but may reduce energy bills over time

How long does a conservatory roof replacement take?

Most conservatory roof replacements take between two and five days, depending on the size and complexity of the project.

Smaller installations can often be completed more quickly, while larger conservatories or structural upgrades may take longer.

If timing matters, for example, before winter, it’s worth discussing the schedule with your installer early.

Conservatory roof replacement cost calculator

Do you have a rough idea of your conservatory measurements and know what material you want? Then why not use our handy conservatory roof cost calculator to give you an approximate idea of what you might pay?

This calculator provides a guide price only, not a quote. For a clearer idea of what you’ll actually pay, search for trusted local conservatory roof specialists covering your area and get in touch for a quote.

Can you replace a conservatory roof yourself?

Replacing a conservatory roof is not usually a DIY job.

The work involves structural considerations, weatherproofing and compliance with building regulations. Mistakes can lead to leaks, heat loss or long-term damage to the structure.

For most homeowners, professional installation provides reassurance that the roof is safe, secure and built to last.

Tips to keep conservatory roof replacement costs down

• Choose materials that match how you use the space

• Compare quotes from several installers

• Schedule the work outside peak seasons if possible

• Consider improving insulation during replacement

• Plan the project alongside other home improvements

Conservatory roof replacement cost checklist

• What size is your conservatory?

• Which roof material do you want?

• Will the structure need strengthening?

• Do you need building regulations approval?

• Have you compared quotes from local installers?

• Is this the right time to upgrade insulation or ventilation?

When should you speak to a conservatory roof specialist?

If your conservatory feels uncomfortable to use, shows signs of wear, or struggles to maintain temperature, it’s worth speaking to an installer.

A professional assessment can help you understand whether the structure is suitable for a replacement, which roof type works best for your home, how long the project will take and what the realistic cost will be.

A short visit is normally all that’s needed to assess the work properly and provide a quote.

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FAQs

How much does it cost to replace a roof on a conservatory?

The average cost of replacing a conservatory roof is around £10,000, although prices can range from £6,300 to £18,225 or more depending on size and materials.

Can you just replace a conservatory roof?

Yes, you can just replace the roof of a conservatory. In many cases, the existing frame and base can remain in place while the roof is replaced.

Why are conservatories going to be banned?

Conservatories are not being banned. However, newer regulations focus on improving energy efficiency, which is why older conservatories are sometimes upgraded with better-insulated roofs.

Can I get a grant to replace a conservatory roof?

Grants are not widely available for conservatory roof replacement, but support schemes may exist for energy efficiency improvements, depending on your circumstances.

Is replacing a conservatory roof worth it?

For many homeowners, replacing the roof improves comfort, reduces heat loss and extends the life of the conservatory without the cost of rebuilding the entire structure.

Is a solid roof better than a glass or polycarbonate roof?

That all depends on your budget. While a solid roof will transform your conservatory into an all-season room and increase your home's saleability, it's the most costly to install.

Can I convert my conservatory into a full extension?

Yes, just bear in mind you'll need planning permission. Ask your local council whether you need to apply so you can add a possible planning fee to your budget.

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