5 Best Conservatory Roof Replacement Companies UK 2026

Five branded systems dominate the UK conservatory roof replacement market. Each is installed by a network of approved local contractors. We’ve compared SupaLite, Guardian, Ultraframe, WARMroof, and Prefix Systems across pricing, warranty, reviews, and features to help you choose.

All five achieve U-values of 0.15 W/m2K or better. All include Building Regulations in the price. The real differences are in transparency, warranty length, and installer networks. All data is verified from manufacturer websites as of April 2026.

Full Comparison Table

Here is a side-by-side comparison of all five systems. Thermal performance is identical across the board. The real differences are in pricing, warranty, speed, and unique features.

Ultraframe is the UK’s largest conservatory roof manufacturer. Most homeowners end up choosing it. The Ultraroof system spans 4 metres without support – the longest in the market. That means no internal tie bars for most conservatory sizes. The result is a cleaner, more open interior.

Ultraframe claims the fastest installation of any tiled system. The roof is watertight in 6 hours, with the full project done in 1-3 days. In practice, 3 days is more realistic, but the speed advantage is real. They also offer the Livinroof hybrid, combining solid panels with glazed sections.

Ultraframe has 106 Trustpilot reviews at 4.4/5 – far more than any competitor. The 10-year warranty is industry standard, though shorter than WARMroof’s 25 years.

WARMroof uses a timber frame rather than aluminium. It offers the longest warranty in the market at 25 years. The company claims timber eliminates condensation that can occur with aluminium in cold weather. All branded systems aim to minimise this, but WARMroof’s approach is distinct.

The system is LABC Registered. Building Regulations approval is handled as part of the installation. It takes 2-4 days for a standard conservatory. WARMroof achieves the standard 0.15 U-value and fits most existing frames.

WARMroof’s main weakness is visibility. It is not on Trustpilot. Its installer network is smaller than Ultraframe or Guardian. This does not reflect product quality, but it makes checking reviews harder. Rely on your installer’s individual references instead.

SupaLite’s biggest differentiator is price transparency. It publishes pricing from £10,000 + VAT for a 10m2 roof. Every other brand demands a quote visit before revealing costs. This gives homeowners a genuine starting point for budgeting.

The system uses ExtraLight tiles, lighter than standard tiles but structurally sound. SupaLite offers next-day delivery for installers. The enhanced spec achieves 0.12 W/m2K.

The drawback: SupaLite does not publish its warranty terms. For a £10,000+ product, that is a big gap. It also has no Trustpilot profile. Published pricing but unpublished warranty is an odd imbalance. For a head-to-head with Guardian, see our SupaLite vs Guardian guide.

Guardian’s standout feature is its exclusive VELUX partnership. It is the only tiled roof system with engineered VELUX window integration. If you want premium roof windows rather than generic ones, Guardian is the only option.

Guardian also has the most comprehensive warranty: 10 years on the product, plus 10 years on workmanship. That is 20 years of combined coverage. Both materials and labour quality are guaranteed. This gives clear recourse if problems arise.

The concern is Guardian’s Trustpilot: 2.6/5 from just 12 reviews. That is a small sample and reflects the manufacturer, not individual installers. Still, it is the lowest score in this comparison. Vet your Guardian installer carefully. Building Regulations are included via LABC/LABSS partnership.

Prefix Systems is the least known brand here, but its product range is genuinely versatile. The company makes solid, glass, and hybrid roofs. Installers can mix configurations within one system. If you want a hybrid combining tiled panels with glazed sections, Prefix is worth considering alongside Ultraframe’s Livinroof.

Prefix achieves the standard 0.15 U-value and is LABC Registered. Building Regulations are included. The warranty is 10 years – matching Ultraframe but behind WARMroof’s 25 years. Installation takes 2-4 days.

Prefix’s weakness is brand awareness. It is not on Trustpilot. Its installer network is smaller than the top three brands. You may need to search harder to find an approved installer, especially outside major cities.

How to Choose the Right System

All five systems deliver identical thermal performance at 0.15 W/m2K. Your decision should come down to warranty, price transparency, unique features, and your local installer’s quality.

Our recommendation: Get quotes from at least 3 approved installers using different brands. The installer’s quality matters more than the brand. Check what is included (plastering, electrics, building control). Read their Google, Checkatrade, or TrustATrader reviews – not just the manufacturer’s Trustpilot page.

For full pricing across all roof types, see our conservatory roof replacement cost guide. For tips on vetting installers, see our best conservatory companies guide. For a detailed brand showdown, see our SupaLite vs Guardian comparison.

Regional Coverage and Installer Density

System availability and installer density vary across the UK. London and the M25 commuter belt have the densest combined coverage (60–80 approved installers across the four major systems). Scotland and Wales have the smallest networks (15–30 dealers each).

• London & M25: 60–80 approved installers across all systems. Strongest quote competition. See our London regional guide.
• Greater Manchester: 35–50 installers. SupaLite advantage thanks to Chorley manufacturing proximity. See our Manchester regional guide.
• Greater Glasgow: 20–30 installers. Building Standards Section 6 (Scotland's Building Regs equivalent). See our Glasgow regional guide.
• Other regions: Birmingham, Bristol, Leeds, Newcastle all have solid coverage at 25–40 installers. Smaller cities and rural areas may have only 5–10 dealers across all four systems.

For the system reviews, see our individual deep-dives: Guardian Warm Roof review, LivinROOF review, and Equinox review.

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