Transform your
Conservatory
A Guardian Warm Roof transforms your conservatory into a beautiful, comfortable space you can enjoy all year round. As the original warm roof system, it sets the standard for quality, performance and innovation.
Lightweight and thermally efficient, it can be installed in just a few days, keeping your home warm in winter and cool in summer. Fully tested and BRE-assessed, it comes with a 10-year guarantee for complete peace of mind.
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Tried, Tested and Recommended
With over 100,000 Guardian Warm Roof installations across the UK and Ireland, thousands of homeowners are already enjoying brighter, quieter and more comfortable living spaces all year round. But don’t just take our word for it — hear it from someone who’s experienced the transformation firsthand.
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Warmth
The Guardian Warm Roof delivers year-round comfort by reducing heat loss compared to glass or polycarbonate.
With BRE-independent testing and a 0.15 W/m²K U-value (0.12 W/m²K in Scotland), it sets the benchmark for energy efficiency.
This means lower heating costs and a more usable space, with performance proven in real-world conditions.
Design
The Guardian Warm Roof is a lightweight, precision-engineered aluminium structure that transforms your conservatory into a permanent home extension.
Its integrated ventilation system prevents condensation, ensuring a dry, problem-free environment. Unlike timber frames that warp or rot, this durable retrofit system offers superior stability, aesthetics, and longevity.
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In most cases, a warm roof replacement can be installed in just 3 to 5 days, depending on the design — giving you a transformed space in less time than you might expect.
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Peace of Mind
Your Guardian Warm Roof is fitted by our nationwide network of Certified Installers, all specially trained to install the system to the highest standard.
Our installer scheme is the only warm roof system in the UK that carries the government-endorsed TrustMark accreditation, giving you extra confidence that your project meets approved standards for quality, safety and professionalism.
For added peace of mind, every installation is backed by a manufacturer’s 10 year product warranty and we also stipulate that all Certified Installers provide an insurance backed guarantee and a 10 year workmanship warranty, so your protected long after the work is complete.
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Guardian Certified Installer Profile: Matt from Leicester
For the
Perfect Fit
Whatever the shape, size or style, a Guardian Warm Roof transforms your conservatory into the perfect living space for your home.
Edwardian
Combination
Gable
Lean-to
Victorian
For the
Perfect Finish
Choose from a range of high-quality roof coverings and features — including Guardian Esprit shingle tiles, Guardian Slate, and premium roof lights from Solstice or Velux — to suit your home’s style. Whether you prefer a traditional look or a contemporary feel, your Guardian Warm Roof can be tailored to match your taste beautifully
Metrotile Shingle: Scarlett
Metrotile Shingle: Red-Brown
Metrotile Shingle: Ironbark
Metrotile Shingle: Forest Green
Metrotile Shingle: Coal Black
Metrotile Shingle: Brown-Black
Metrotile Shingle: Bistre-Brown
Esprit Shingle: Greenstone
Esprit Shingle: Coal-Black
Esprit Shingle: Charcoal
Esprit Shingle: Scarlet
Roof Finishes
We offer a range of highly durable roof finish options, all independently fire tested by BRE and achieving the highest possible fire performance classification.
The Guardian Esprit Shingle provides a sleek, contemporary appearance with clean lines and a textured stone-coated finish, while the Guardian Metrotile Shingle offers the classic look of traditional tiles with the benefits of modern lightweight roofing technology. Both systems deliver excellent weather resistance, long-term durability, and are available in a range of attractive colours. Browse the images to explore the different finish options available.
Guardian Slate: Black
Guardian Slate: Grey
Guardian Slate: Mulberry
Guardian Slate: Terracotta
Alternatively, Guardian Slate delivers the authentic, textured look of natural slate without the risk of cracking or breaking. It is rigorously fire, weather, and UV-tested to prevent fading, and comes in four natural shades for a long-lasting, beautiful finish.
Roof Lights
We offer two exceptional roof light solutions to naturally brighten your space.
The Guardian Solstice Rooflight is a sleek, cost-effective choice designed to sit seamlessly flush within your Guardian Warm Roof, featuring high-performance, low-maintenance sealed glazing.
Additionally, through our exclusive partnership with VELUX, you can incorporate world-leading roof windows—ranging from classic centre-pivot to contemporary designs—to flood your room with natural daylight and fresh air all year round.
Frequently
Asked Questions
From brick finishes to rendered walls, and tile or slate for the roof, our exceptional finish options to ensure your Guardian Home Extension compliments your existing home.
A Guardian Warm Roof is a lightweight, fully insulated solid roof system designed to replace your existing conservatory roof. It transforms your conservatory into a comfortable, energy-efficient living space you can use all year round — cooler in summer, warmer in winter, and quieter during rain.
We offer a wide range of Guardian Warm Roof styles including Edwardian, Victorian, Lean-To, Gable Front, and bespoke designs. You can choose from multiple tile colours as well as the innovative lightweight Guardian Slate, interior finishes, roof windows (such as VELUX or Guardian Solstice), and lighting options to create your perfect living space.
In most cases, planning permission is not required to replace your conservatory roof with a Guardian Warm Roof — provided your extension meets standard permitted development rules. Your Certified Installer can confirm this and assist with any local requirements.
Yes. Building Control approval is essential for safety and certification. The Guardian Warm Roof system is fully approved by the LABC and HBC, ensuring it meets all UK Building Regulations for structure, insulation, and fire safety. Your Certified Installer will handle the approval process on your behalf.
Installing a roof without approval can cause serious issues — from structural risks to difficulties when selling your home. Without certification, you may even need to replace the roof again. Our Certified Installers always obtain full Building Control sign-off for your peace of mind.
Because each Guardian Warm Roof is prefabricated and made to measure, installation is typically completed in 2–3 days. Your old roof is removed, and the new structure is assembled with minimal disruption or mess.
We understand homeowners want a smooth experience. All Guardian Warm Roof components are designed for quick, clean installation. Your Certified Installer will protect your space and complete most projects within just a few days, so you can start enjoying your new room straight away.
Prices vary depending on size, design, and finish. Every roof is bespoke, so the best way to get an accurate price is to contact your nearest Certified Installer for a free, no-obligation quote.
Yes. A Guardian Warm Roof improves energy efficiency, comfort, and property value. Many homeowners report reduced heating costs and faster home sales thanks to the system's solid, tiled appearance — which makes a conservatory look like a true home extension.
Absolutely. Every Guardian Warm Roof is designed to fit your existing structure perfectly, regardless of size or style. Our system works with almost any conservatory type — including Edwardian, Victorian, and P-shaped designs.
Yes — as long as the frames are fully reinforced. A Certified Installer will check your conservatory's structure to ensure it can safely support the new roof.
No. The Guardian Warm Roof is a fully ventilated system that eliminates the risk of interstitial condensation. It has been independently tested by the Building Research Establishment (BRE) to guarantee its performance in all UK climates.
Yes, this is possible. Your installer will follow manufacturer guidance to ensure safe installation and correct sealing of the flue. Always consult both your Certified Installer and your log burner supplier before installation.
We take pride in ensuring that the Guardian Warm Roof is independently tested by the Building Research Establishment (BRE), proving that the design of the roof meets the designated U-Value requirements. All design variances have been tested to prove that the 0.15 W/m²K U-Value is met for England, 0.13 W/m²K for Wales, and 0.12 W/m²K for Scotland.
Every installation includes:
- 10-year product guarantee
- 10-year workmanship guarantee (from your Certified Installer)
- Insurance-backed guarantee, in case your installer ceases trading
These provide complete peace of mind for your investment.
If you experience an issue, please contact your original Certified Installer first — they'll have your installation records. If you're unsure who that is, contact our customer service team on 0800 066 5832 and we'll help locate your installer.
Guardian Building Systems partners with a UK-wide network of Certified Fabricators, each using advanced manufacturing technology and strict quality control. Every roof is built, tested, and pre-assembled before delivery to ensure a perfect fit and long-term reliability.
Guardian Warm Roof is the original and most trusted solid roof system in the UK, approved by Building Control since 2006. With over 100,000 installations nationwide, it offers unmatched energy efficiency (U-value of just 0.15 W/m²K), safety, and aesthetic appeal.
With year-round comfort, the possibilities are endless — home office, dining room, reading room, playroom, or relaxation space. Many homeowners say their conservatory has become their favourite room in the house.
Replacing your old conservatory roof with a Guardian Warm Roof gives you a room that's usable in every season, adds value to your home, and enhances your lifestyle. It's a proven, high-quality solution backed by UK Building Control and trusted by thousands of homeowners.
Customer Testimonials
"The experience from start to finish with the team has been second to none. Every stage of the project from receiving a quote, arranging a start date and the installation of the Guardian Warm Roof itself was really smooth which is hard to come across in the trades industry. The fitters worked with real efficiency and were knowledgeable when asking any questions. The project has been completed in almost a week and the difference in heat retention (a cold February) is remarkable. Thanks again!"
"The team did a fantastic job replacing my conservatory roof. The attention to detail was impressive as was the level of service at every step of the process from initial visit, at every stage of construction, to receipt of completion documentation. The new roof has made such a difference to the comfort of the conservatory, which formerly had a state of the art glass roof, which looked great but was prone to leaking and lost heat in winter and acted like a greenhouse in summer. I am so pleased I decided to use this company. They surpassed expectations in their level of service and the product is absolutely excellent.”
"We find the Guardian Warm Roof to be an awesome investment. We can no longer hear the din from outside, or if/when it starts to rain. We can watch the TV in peace and not have to wait for the thunderstorms to pass. The roof is completely different to the polycarbonate roof we previously had fitted; it keeps the warm air in and maintains the temperature of the house. I couldn't believe the change once this new roof was fitted. This will definitely pay for itself in the years to come. The heatwaves we had made no effect on the conservatory, it managed to keep a nice cool temperature within the room instead of previous stifling heat. All in all I am very happy with my purchase and wish we had done it sooner!”
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