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.

In most cases, you don't need planning permission for a roof lantern, provided it meets standard permitted development rules. However, if you're adding a new structure or significantly altering your roof, Building Control approval may be required. Your installer or local authority can confirm what applies to your project.

A roof light is typically a flat window installed in a roof, while a roof lantern is a raised, multi-pane glazed structure that allows light to enter from multiple angles. Roof lanterns not only bring in significantly more daylight but also add a distinctive architectural focal point to your home.

No — a properly fitted Guardian Roof Lantern will not leak. Every lantern undergoes rigorous weather testing to ensure complete watertightness. Our precision-engineered design, seals, and joints prevent water ingress even in extreme UK weather conditions.

The Guardian Roof Lantern is designed for outstanding thermal efficiency. By separating internal and external aluminium profiles, we eliminate cold bridging — a major cause of heat loss. High-performance glazing and insulated glazing enclosures further enhance energy efficiency, keeping your room warm in winter and cool in summer.

Security is a key design focus. The Guardian Roof Lantern features our GUARD-Lock™ technology, which includes precision 'click-fit' rafters and secure glazing enclosures. Combined with robust aluminium profiles, the system is highly resistant to intrusion or tampering, giving homeowners complete peace of mind.

Yes, absolutely. Roof lanterns can be added to most existing flat roof structures. Your builder or Certified Installer will carry out a structural assessment to confirm suitability and make any necessary reinforcements before installation.

Our lanterns are constructed from premium-grade aluminium — chosen for its strength, durability, and sustainability. Aluminium's inherent rigidity allows us to achieve an ultra-slim 12mm V-profile design, offering maximum glass area and unobstructed sky views. Unlike uPVC, aluminium retains its appearance and performance for decades.

Yes. The Guardian Roof Lantern is designed for quick, efficient installation. With its minimal part count and precision-engineered components, it can typically be assembled and fitted in around 60 minutes. This smart design ensures both simplicity for installers and strength for homeowners.

Each Guardian Roof Lantern is made to order, so you can specify the size that suits your space. The maximum standard size is 3.2m x 2m with only four bars, offering uninterrupted views and maximum light. Larger designs are available with additional support rafters.

Standard colour choices for both internal and external frames are Anthracite Grey, Black, and White. The most popular combination is Grey exterior with White interior, balancing modern style with bright, neutral interiors. Custom RAL colours are available on request (additional costs may apply).

Yes. Aluminium is fully recyclable and has an extremely long lifespan. Its strength allows for slimmer frames, which means more natural light and less material use overall — making it both an energy-efficient and environmentally responsible choice.

Because much of the work is done off-site (walls built to measure, roof components prefabricated), the on-site installation is around 50% quicker than a traditional build. This reduced build time means less disruption, less exposure to weather, and faster project completion.

Your Guardian Home Extension can be tailored to your needs. The system is very flexible and can meet a huge array of design styles and requirements. You can select different exterior finishes (brick, render), roofing materials (tile, slate), glazing options (roof lanterns, large windows/doors), and lighting to suit your home. We have developed a selection of popular styles that you can view on our website for more inspiration.

The three top benefits are thermal performance, speed to build, and space saving. The Guardian Warm Wall system achieves the required thermal performance with a much thinner profile, meaning you can gain up to 20% additional floor space versus using much thicker traditional bricks and mortar methods.

The system is engineered for superior energy efficiency. By integrating the Guardian Warm Roof with Kingspan TEK walls, your extension meets or exceeds current insulation standards. The precise U-values depend on the design, glazing options, and specification you choose. Independent testing reports from the BRE (Building Research Establishment) can also be provided to prove thermal performance.

Yes. The system is engineered to comply fully with UK Building Regulations. Your Certified Installer will manage the regulatory approvals and certifications, ensuring your extension meets structural, fire, and thermal performance requirements. We supply a wide array of supporting documentation to all Certified Installers to support Building Control applications.

Product guarantees are provided for all Guardian-supplied components of your Guardian Home Extension, and your Certified Installer will provide additional guarantees for other components selected. This typically includes a 10-year workmanship guarantee from the Certified Installer and an insurance-backed warranty in case the installer ceases trading — giving you full peace of mind.

One of the big advantages of the Guardian Home Extension is greatly reduced disruption. Since most structural elements are pre-manufactured and delivered to site ready to assemble, there's far less time with noise, scaffolding, mess, or exposure to the elements. The process is designed to be efficient and clean.

Yes. The system is intended to work seamlessly with your existing home. Whether you want to build a side or rear extension, the modular design allows you to attach to your current walls, rooflines, and internal layouts with full design flexibility.

You can choose from a range of finishes that blend with or complement your existing home, including brick, render, tile, slate, and various glazing or lighting options such as roof lanterns, large bi-fold doors, and slimline windows. The flexibility in design helps ensure your extension looks like a natural part of your home.

Costs depend on size, specification, finishes, glazing, site access, and structural complexity. Because each extension is bespoke, we recommend contacting your local Certified Installer for a detailed, no-obligation quote.

Planning permission: In many cases you may not need full planning permission if your extension falls under permitted development rules — but this depends on your property, local regulations, and design. Building Control is always required. Your Certified Installer will manage the building control approvals and ensure the extension is fully certified.

Skipping approvals can lead to serious consequences: structural risks, difficulty selling your home, or being required to remove or modify the extension at your own cost. Always use a Certified Installer who handles all permits and inspections properly.

Guardian has a network of Certified Installers who are vetted and trained to install both the Guardian Warm Roof and the Guardian Home Extension system. They understand the regulatory, structural, and finishing details necessary for quality installations.

You can use our website's installer finder form or call our customer service number. We match you with a nearby Certified Installer who will survey your site and provide a full proposal and specification.

If problems arise, contact your Certified Installer who has full records and detailed project files. If you cannot reach them, you can escalate your concern to Guardian Building Systems' customer services. Be sure to reference your project's guarantee and installation date.

Yes — modern flat roof systems are an excellent choice for home extensions. Unlike older flat roof constructions, the Guardian Flat Roof is engineered using advanced insulation and warm roof technology to provide exceptional energy efficiency, durability, and weather protection. It also offers a sleek, contemporary appearance that suits both modern and traditional homes.

In many cases, flat roof extensions fall within permitted development rights and won't require planning permission. However, this depends on the size, height, and location of your project. Building Regulations approval will usually still be required to ensure the extension meets structural and thermal standards. Your installer or local authority can advise you on your specific project.

Absolutely. The Guardian Flat Roof has been specifically designed to work seamlessly with roof lanterns, helping to maximise natural light and create a bright, open feel within your extension. Multiple lantern configurations may also be possible depending on the size and layout of the roof.

The Guardian Flat Roof is designed to deliver exceptional thermal performance. Independently tested by the Building Research Establishment (BRE), the system can achieve U-values as low as 0.104 W/m²K, helping to reduce heat loss and improve energy efficiency throughout the year.

No — when installed correctly by a trained professional, the Guardian Flat Roof is designed to provide long-lasting weather protection. The system incorporates carefully engineered roof build-ups, ventilation, insulation, and compatible weatherproof coverings such as GRP or EPDM to ensure excellent resistance to the UK climate.

Yes. The system uses a modern warm roof construction with integrated ventilation and insulation layers designed to minimise condensation risk. This helps protect the roof structure while maintaining a comfortable internal environment throughout the year.

Yes. All Guardian Flat Roof systems manufactured to specification include a 10-year product warranty. Certified installers can also provide a 10-year workmanship warranty and insurance-backed guarantees for added peace of mind.

The Guardian Flat Roof is a fully engineered system that combines structural aluminium components, high-performance PIR insulation, bespoke insulation layers, OSB decking, ventilation systems, and durable external coverings such as GRP or EPDM. Every component is designed to work together to deliver long-term strength, energy efficiency, and reliability.

Yes. The system has been independently tested and is compliant with current Building Regulation requirements, including LABC compliance. It is also approved by Hertfordshire Building Control.

With proper installation and maintenance, a modern Guardian Flat Roof is designed to provide decades of reliable performance. The high-quality materials, warm roof design, and engineered construction help ensure long-term durability and weather resistance.

In many cases, yes. Existing flat roof structures may be suitable for replacement or upgrade using the Guardian Flat Roof system. Your installer will assess the structure and confirm whether any additional support or alterations are required before installation.

The system is compatible with a range of modern flat roof coverings, including GRP fibreglass and EPDM rubber roofing systems. Fascia, soffit, guttering, and roof lantern options can also be tailored to complement the style of your home.

The Guardian Flat Roof is suitable for both contemporary and traditional properties. Its clean, low-profile appearance makes it ideal for kitchen extensions, garden rooms, open-plan renovations, and modern living spaces.

Yes. The Guardian Flat Roof is designed to be flexible and can be configured to suit a wide range of extension sizes and layouts. Options include different soffit arrangements, roof lantern integrations, and various roof covering finishes.

Yes. The combination of advanced insulation, warm roof construction, and carefully engineered detailing helps reduce heat loss and improve the overall energy efficiency of your home. This can help lower energy bills while creating a more comfortable living environment.

The Guardian Flat Roof is designed with long-term performance and efficiency in mind. Its high thermal performance can help reduce household energy consumption, while durable construction materials contribute to a longer lifespan and reduced maintenance over time.

The system is designed for a wide range of applications, including patios, terraces, outdoor dining areas, garden seating spaces, carports, entrance canopies, walkways, and commercial outdoor seating areas. Its modular design allows it to be adapted to suit different property styles and project requirements.

Aluminium offers excellent strength, corrosion resistance, and long-term durability while requiring very little maintenance. Unlike timber structures, aluminium will not rot, warp, or require regular repainting, making it ideal for year-round outdoor use.

The Guardian Veranda is compatible with both 6.4mm laminated glass and 6mm solid polycarbonate roofing options. This allows installers and homeowners to balance aesthetics, light transmission, thermal performance, and budget requirements depending on the application.

Yes. The system is designed to provide effective shelter from rain and sun throughout the year. Integrated guttering and engineered drainage help manage rainwater efficiently while maintaining a clean architectural appearance.

The veranda features a fully aluminium construction engineered for long-term structural performance and resistance to corrosion. The powder-coated finish also helps protect the system from weathering and reduces ongoing maintenance requirements.

No. The aluminium framework is designed to be low maintenance and only requires occasional cleaning to keep it looking its best. Unlike timber alternatives, it does not require staining, painting, or sealing.

Yes. The system has been engineered specifically for outdoor use and is designed to perform reliably in typical UK weather conditions, including rain, wind, and prolonged UV exposure.

The system is manufactured using a robust aluminium framework combined with either laminated glass or solid polycarbonate roofing. All components are engineered to work together to provide structural reliability, weather protection, and installation efficiency.

Standard configurations can accommodate projections of up to 3.6 metres with laminated glass and up to 3.8 metres with solid polycarbonate roofing, with spans up to 6.3 metres. Bespoke sizes and larger spans may also be available subject to specification requirements.

Yes. The Guardian Veranda features an adjustable roof pitch ranging from 4° to 40°, allowing flexibility for drainage requirements, architectural integration, and varying installation conditions.

The system has been engineered to simplify installation and reduce on-site fitting time while maintaining a high-quality finish. Its modular design supports efficient assembly across a wide range of project types.

In many cases, verandas may fall within permitted development rights and not require planning permission. However, requirements can vary depending on the size, height, location, and intended use of the structure. Installers and homeowners should always check with their local authority where necessary.

Yes. The modular system allows for a range of bespoke layouts, sizes, finishes, and configurations to suit different property styles and project requirements.

The slim aluminium profiles and clean detailing allow the system to complement both modern and traditional properties. It is suitable for domestic homes as well as commercial and hospitality environments.

Yes. The system can be configured as a contemporary carport, providing protection for vehicles from rain, frost, and UV exposure while maintaining a modern architectural appearance.

Yes. The veranda is designed to provide sheltered outdoor living space throughout the year, helping homeowners and businesses make better use of patios, terraces, and garden areas regardless of weather conditions.

Yes. The system is suitable for cafés, restaurants, hospitality venues, and other commercial environments requiring covered outdoor seating or sheltered external spaces.

A well-designed veranda can enhance the usability and visual appeal of outdoor areas, potentially improving the overall attractiveness and functionality of a property.