Conservatory Roof Replacement Cost UK 2026: Full Price Breakdown

A conservatory roof replacement costs between £2,500 and £15,000 in 2026, depending on the roof type, conservatory size, and your location. Polycarbonate is the cheapest option from around £2,000, while a fully tiled solid roof on a large conservatory can reach £15,000 or more.

We’ve compared pricing from the four major UK conservatory roof systems – SupaLite, Guardian, Ultraframe, and WARMroof – alongside market rate data from installers to give you an accurate cost breakdown for every roof type and conservatory size. All prices are verified as of April 2026 and include both materials and installation.

How Much Does a Conservatory Roof Replacement Cost in 2026?

The average conservatory roof replacement costs £4,000-£8,000 for a standard 3x3m to 4x4m conservatory, with the roof type being the single biggest factor. A polycarbonate replacement on a small lean-to can cost as little as £2,000, while a full tiled roof conversion on a large Victorian conservatory can exceed £15,000.

Here’s what you’ll pay for each roof type across three common conservatory sizes:

These prices include materials, labour, scaffolding (if needed), and waste removal. VAT is typically included in residential quotes but always confirm this. Prices vary by region – expect to pay 10-20% more in London and the South East compared to the North of England or Wales.

Cost by Roof Type

Each roof type offers different benefits in terms of insulation, light, aesthetics, and cost. The right choice depends on how you use your conservatory and your budget.

Polycarbonate Roof Replacement

Polycarbonate is the cheapest conservatory roof option at £200-£350 per square metre installed, making it the go-to choice for like-for-like replacements on a budget. Modern multiwall polycarbonate panels are significantly better than the single-skin sheets used in the 1990s and 2000s.

The main drawback is insulation – even modern polycarbonate has a U-value of around 1.0-1.5 W/m2K. Your conservatory will still be too hot in summer and too cold in winter for year-round use. If year-round comfort is a priority, see our full conservatory pricing guide for options including complete rebuilds. Polycarbonate also discolours over time, typically lasting 10-15 years before it starts to look tired.

Choose polycarbonate if: you need a budget replacement under £5,000, you mainly use the conservatory in spring and autumn, or you plan to sell soon and want a fresh look without a major spend.

Glass Roof Replacement

Glass conservatory roofs cost £350-£550 per square metre installed and represent a significant upgrade over polycarbonate in both appearance and thermal performance. Self-cleaning, solar-control glass is now standard on most installations, reducing both maintenance and overheating.

Modern thermally efficient glass roofs achieve U-values of around 1.0-1.2 W/m2K – better than polycarbonate but well behind solid roofs. The main advantage is natural light. A glass roof floods the space with daylight, making it feel larger and more connected to the garden.

Choose glass if: you want maximum natural light, your conservatory faces north or east (less overheating risk), or aesthetics matter more than maximum insulation.

Tiled Solid Roof Replacement

A tiled solid roof conversion is the premium option at £650-£1,200 per square metre installed, but it transforms a conservatory into a genuine extension that you can use 365 days a year. All major systems (SupaLite, Guardian, Ultraframe Ultraroof, WARMroof) achieve U-values of 0.15 W/m2K or better – that’s six times more insulating than polycarbonate.

The installation replaces your existing roof structure with a lightweight aluminium or timber frame topped with tiles that match your main house roof. Most systems can be fitted in 2-5 days without removing the existing conservatory frame or base. The result looks like a natural extension rather than a bolted-on conservatory.

Homeowners consistently report that heating bills drop significantly after a tiled roof conversion. The conservatory becomes usable year-round, and several studies suggest a solid roof can add 5-10% to your property value.

Choose a tiled roof if: you want year-round use, you’re tired of a conservatory that’s too hot in summer and too cold in winter, or you want to add genuine value to your property.

Hybrid Roof (Glass + Solid Panels)

Hybrid roofs combine solid insulated panels with glazed sections, typically costing £500-£900 per square metre installed. Systems like the Ultraframe Livinroof and Ultraframe Classic with glass panels let you position glazed areas where you want light while keeping solid panels where you need insulation.

This is the best compromise if you want better insulation than glass alone but don’t want to lose natural light entirely. A typical hybrid layout uses solid panels around the perimeter with a central glazed ridge or skylight panels.

Choose hybrid if: you want both light and insulation, you use the conservatory as a dining room or kitchen extension, or your conservatory faces south (solid panels reduce overheating while glass keeps it bright).

SupaLite vs Guardian vs Ultraframe: Which Roof System?

The UK conservatory roof replacement market is dominated by four major branded systems. Each is installed by a network of approved local installers, and the quality differences are smaller than the marketing suggests – all achieve similar insulation levels. The main differences are in warranty, design flexibility, and installer network quality.

*Guardian’s Trustpilot score reflects the manufacturer HQ, not individual installers. Your experience will depend primarily on your local installer’s quality.

Our take: All four systems deliver similar thermal performance at similar price points. The differences that matter are: Ultraframe has the strongest track record (chosen by more UK homeowners, highest Trustpilot reviews, and the widest installer network). Guardian is the only system with VELUX roof window integration, which is valuable if you want sky views from a solid roof. WARMroof offers the longest warranty at 25 years. SupaLite is the only brand that publishes pricing upfront.

Whichever system you choose, the installer matters more than the brand. Our guide to the best conservatory companies in the UK covers how to vet installers. Get at least 3 quotes, check individual reviews, and ask to see recent local projects.

What Affects Conservatory Roof Replacement Costs?

Seven factors determine your final price, with roof type and conservatory size accounting for roughly 70% of the variation. The remaining 30% comes from your specific property circumstances.

Conservatory Size

Larger conservatories cost more in absolute terms but less per square metre – a 25m2 conservatory doesn’t cost five times more than a 5m2 one. Most installers quote based on the total roof area, with a minimum project cost of around £2,000-£3,000 regardless of size.

Conservatory Style

Lean-to (single-pitch) conservatories are cheapest to re-roof because the structure is simple. Victorian and Edwardian styles with hipped roofs cost 10-20% more due to additional ridges, valleys, and tile cuts. P-shaped and L-shaped conservatories are the most complex and expensive.

Access and Scaffolding

If your conservatory is easily accessible from ground level, scaffolding may not be needed (saving £400-£800). Conservatories attached to upper floors, built on slopes, or with restricted access will need scaffolding, which adds to the cost.

Electrics and Lighting

Solid and hybrid roofs block natural light, so most homeowners add LED downlights (from £300-£600 for a standard installation). Some also add a roof lantern or skylight (£800-£2,000 depending on size). If you’re considering an orangery-style conversion, a lantern roof is the defining feature.

Building Regulations

Replacing a lightweight roof (polycarbonate or glass) with a solid tiled roof usually requires Building Regulations approval because you’re changing the structural loading. Most branded systems (SupaLite, Guardian, Ultraframe, WARMroof) include building control in their price – but always confirm this is included in your quote. A separate Building Regulations application costs around £250-£400.

Waste Removal

Your old roof panels need disposing of. Most installers include removal in their quote, but check whether skip hire (£120-£300) is included or an extra charge.

Location

Labour rates vary significantly across the UK. London and the South East are typically 15-20% more expensive than the Midlands or North. Rural areas may attract additional travel charges from installers.

Is Replacing Your Conservatory Roof Worth It?

A solid conservatory roof replacement is one of the few home improvements that can pay for itself through energy savings and added property value, but only if your conservatory is currently unusable for large parts of the year.

Energy Savings

Replacing a polycarbonate or old glass roof with a solid tiled roof (U-value 0.15) dramatically reduces heat loss. Homeowners consistently report lower heating bills because the conservatory no longer drains heat from the adjoining rooms. The exact saving depends on your energy tariff and how much you currently heat the conservatory, but £200-£500 per year is a reasonable estimate for a medium-sized conservatory.

Property Value

A conservatory with a solid roof is valued as usable living space by estate agents, while one with a polycarbonate roof is often discounted. Industry estimates suggest a solid roof conversion can add 5-10% to the conservatory’s contribution to property value. On a home worth £300,000 where the conservatory adds £15,000 of value, that’s an uplift of £750-£1,500.

vs Building a New Extension

A single-storey extension costs around £1,500-£3,000 per square metre – roughly 2-4 times more than a conservatory roof replacement. If you already have a conservatory with sound walls and foundations, replacing the roof is far cheaper than demolishing it and building from scratch. For those weighing up a complete new build, our uPVC conservatory costs guide covers full build pricing. SupaLite claims their system is “up to 60% cheaper” than a new extension – and on the numbers, that checks out.

The exception is if your existing conservatory frame is damaged, rotten, or poorly built. In that case, a roof replacement won’t solve the underlying structural issues, and a full rebuild or extension may be better value long-term.

Conservatory Roof Replacement Grants

Government energy efficiency grants could partially fund your conservatory roof replacement if the new roof significantly improves your home’s insulation rating. Two schemes are currently available in 2026.

ECO4 Scheme: Available to homeowners on qualifying benefits or with low EPC ratings. The scheme funds insulation improvements, and a solid conservatory roof (U-value 0.15) may qualify as roof insulation. Funding is means-tested and depends on your energy supplier. See our full ECO4 guide for eligibility details.

Great British Insulation Scheme (GBIS): Targets homes in Council Tax bands A-D in England and A-E in Scotland. Like ECO4, it funds insulation improvements. If your conservatory roof replacement counts as an insulation upgrade, you may be eligible. See our GBIS guide for details.

Note: Grant eligibility for conservatory roof replacements specifically is not guaranteed – it depends on your assessor’s evaluation. But it’s worth checking before you commit to paying full price.

Planning Permission and Building Regulations

Most conservatory roof replacements don’t need planning permission, but solid roof conversions almost always require Building Regulations approval. These are two separate things.

Planning permission: Generally not required if you’re replacing a roof on an existing conservatory without changing its footprint, height, or position. Exceptions apply if your property is listed, in a conservation area, or if the new roof significantly changes the external appearance.

Building Regulations: Required when you change the roof type from lightweight (polycarbonate/glass) to solid/tiled. This is because the heavier roof puts different structural loads on the conservatory frame and foundations. All four major branded systems (SupaLite, Guardian, Ultraframe, WARMroof) are designed to meet Building Regulations and most include the approval process in their installation cost.

What you need to do: Ask your installer whether Building Regulations approval is included in their quote. If they use a branded system, it almost certainly is. If they’re using a bespoke or non-branded system, you may need to arrange a separate Building Control inspection (around £250-£400).

How to Choose the Right Conservatory Roof

The right roof depends on three factors: how you use the conservatory, your budget, and how much natural light you want to keep. Here’s a simple decision framework.

Our recommendation: If your budget allows it, a tiled or hybrid roof is almost always the better long-term investment. The energy savings, increased property value, and year-round usability justify the higher upfront cost compared to another polycarbonate roof that you’ll be replacing again in 10-15 years.

Get at least 3 quotes from different approved installers. Compare not just price but also warranty, building control inclusion, and whether lighting and plastering are included or extras.

Laura Bennet

Home Energy & Sustainability Editor

Laura leads coverage on home energy, heating, and sustainable living. With over 12 years in the UK energy sector, she writes about boilers, solar panels, insulation, and eco-friendly upgrades that reduce household costs.

Reviewed by

Tom Reynolds

Business Energy Specialist