Frequently Asked Questions

Guardian Warm Roof FAQ


What options are available with a Guardian Warm Roof?

There are many options available, please contact us to discuss further or visit our roof options page to view the roof options available.

Do I need planning permission for a sun room with a Guardian Warm Roof?

Planning permission is not required provided that:
1. The ground area covered by the extension and any other buildings within the boundary of the property, excluding the original house, is not more than half the total area of the property.
2. Any part of the extension is not higher than the highest part of the roof of the existing house.
3. The eaves of the extension are not higher than the eaves of the existing house.
4. Any part of the extension does not extend beyond any wall facing a road if it forms the principal or side elevation of the original house.

How much will a Guardian Warm Roof cost?

Please contact your nearest approved installer for an estimate.

Do I need planning permission?

Planning permission is not normally needed to change your roof but building control approval is recommended.

Will there be disruption to my home?

All Guardian Warm Roofs are pre-fabricated and made to measure by our Certified Fabricator network. We also take great care in ensuring that all elements of the roof are as easy to install as possible. That’s why we are confident that our Certified Installers can install a standard Guardian Warm Roof in 2-3 days meaning there is little disruption to your home.


Is building control needed?

Gaining building regulations approval from your local authority for your new Guardian Warm Roof is necessary and has multiple benefits for homeowners. Firstly, and unlike many other competitor systems, the Guardian Warm Roof has been rigorously checked centrally by Hertford Building Control (HBC). All of our Certified Installers are partnered with the LABC and are therefore able to submit and process the necessary building control requirements through the LABC and through your local building authority. Your Certified Installer will be able to discuss more about this process and the costs involved.

What happens if I don’t get Building Control approval ?

It is absolutely necessary to get building control approval and Guardian Building Systems will always support our Certified Installers and Homeowners to make this approval process as easy and painless as possible. Unfortunately there are companies in market place that are willing to ignore Building Regulations and just cover the existing glass or polycarbonate with tiles and minimal insulation within the voids of the roof. These structures are extremely dangerous and have been well documented over the past few years in cases where the structure has moved or even collapsed. In the event that you want to sell your property and you do not have building control approval, you will have to go through lengthy and costly processes to rectify this; this may result in replacing the roof again!

Will a Guardian Warm Roof fit my conservatory?

All Guardian Warm Roofs are made bespoke to fit your existing conservatory. The system is designed to cover all designs and sizes. Guardian Warm Roof also allows the option for VELUX roof windows or fully glazed panels such as the Guardian Solstice.

We do not have a low brick wall, we have plastic panels on our conservatory, will a Guardian Warm Roof be too heavy or can it still be applicable?

Providing the frames are fully reinforced it should not be a problem installing a Guardian Warm Roof on full height frames. A Certified Installer of the system can check that the frames are fully reinforced and advise accordingly.

I can see that the Guardian Warm Roof frame has a large proportion of aluminium. Can you please confirm this design does not result in condensation to the structural members or materials and finishes?

The Guardian Warm Roof is a fully ventilated system with no interstitial condensation risk attached with it. We take this so seriously we have our roof independently tested and checked by theBRE. The Guardian Warm Roof passed all tests including various areas and climates across theUK.

Can you put a log burner flue through a Guardian Warm Roof?

Yes it is possible to put a log burner flue through a Guardian Warm Roof. You will need to check with the supplier of the burner regarding sealing from the outside and how far the insulation should be cut back from the the flue itself.

What guarantees do homeowners get with a Guardian Warm Roof?

Yes, there are 3 key guarantees that all homeowners receive when their Guardian Warm Roof is fitted by a Certified Installer. Firstly, your roof is covered by a 10 year product guarantee, you also receive a 10 year workmanship guarantee from your Certified Installer and lastly, in the unlikely even that the Certified Installer ceases trading you also have an Insurance Backed Guarantee.

How do I find a reputable Guardian Warm Roof Installer?

Please utilise the form on our website or call 08000665832 to speak with our customer services team. Your details will be taken and securely kept while we find the closest Certified Installer to provide you with a quote. Our Certified Installer scheme has been developed to ensure that we have the very best installers in the marketplace. They have to meet stringent checks and processes in order to join the scheme as well as undertaking regular installer training to ensure quality installation.

Tell me about the company that actually manufactures The Guardian Warm Roof?

We have a network of 22 Certified Fabricators that are experts in creating bespoke Guardian Warm Roofs.We work very closely with our Certified Fabricator network to make sure they have all the latest software, technology and the relevant intelligence needed to produce Guardian Warm Roofs. As you might imagine, each fabricator has made a huge investment in equipment and personnel as well as the commitment to ourselves. When a roof is ordered, all the dimensions and specification go direct to the fabricator and they actually build the roof on their shop floor to make sure every component is included and fits perfectly. Once the roof assembly is complete, it is then dismantled, labelled and carefully packed ready for delivery, direct to your home, where the installation team are waiting and all-set to fit your new roof. How can you claim to be the best at what you do? The Guardian Warm Roof is our number one and our most important product, it’s the foundation of our business and has taken many years and lots of dedicated effort to design and create. In other words, we are 100% committed to ensuring every aspect of the roof is as good as it can be, over the last ten years, we have tweaked and modified the design plus introducing new materials all of which have combined to improve the structural strength and the thermal efficiency. So now we can confidently say unconditionally, that there is no better lightweight roof system available in the UK

Why should I do business with you?

We understand that choosing any building firm is an important decision, whether its a straight-forward job or a more complicated project. The two things that stand-out here are, 1, the roof itself and 2, the people who you appoint to install it. So lets consider the first item: The Guardian Warm Roof system was officially approved by building control back in 2006, the materials used and the efficiency performance are well documented, there is no doubt, the Guardian Warm Roof is an excellent product well over 100,000 have already been installed in the UK. When it comes to the installation itself, we have a well established manufacturing network and our Certified Installer programme absolutely ensures that only qualified fitters will be on-site to install our roof, so all of these things are there for your benefit and peace of mind.

Can a Guardian Warm Roof work on our very large conservatory?

The Guardian Warm Roof system has been designed to work on virtually any size of conservatory frame. We have installed our lightweight roof onto commercial properties all over the UK, such as hotels, rest homes, offices shopping centres – if there is any doubt, your Certified Installer will discuss the options with you prior to giving you a quote.

How can you claim that a Guardian Warm Roof is such a good investment?

That’s easy, we have hundreds of examples of Homeowners who have sold their house for more than their close neighbours and they tell us that their Guardian Warm Roof definitely helped. The tiled roof makes the conservatory look like a home extension and for many people, that’s exactly why they choose to have a Guardian Warm Roof option. The roof conversion will help you sell more quickly and for more money. So the benefits are much more than the everyday value of having more living space, your also increasing the value of your home Aside from being an investment that enhances your own personal lifestyle – you'll almost certainly get more, when you decide to sell.

How do other people use their conservatory when they’ve had a Guardian Warm Roof fitted?

People use the extra usable space the Guardian Warm Roof provides as a place to retreat and relax. Some people use their sunrooms for family rooms, library/reading room, dining and entertaining areas, as a playroom for children or grandchildren, workplace area, exercise room, reading room, room to do arts and crafts, a room to gaze out at the stars or simply a room to close your eyes for a few minutes on a Saturday afternoon. The possibilities are endless.

Why should we invest in a Guardian Warm Roof?

Many reasons: The Guardian Warm Roof was the first fully insulated, lightweight Solid Roof system on the market and is not just the market leader, it’s also the most popular warm roof in the UK. A Guardian Warm Roof will extend your living space and increase the value of your home. Replacing your old Conservatory Roof with a Guardian Warm Roof System will give you the living space you presumed you were getting when you originally had your conservatory installed. The Guardian Warm Roof is approved by the HBC, independently tested by the BRE and achieves   incredible thermal efficiency with a U Value of 0.15 W/m2K.

Who should I contact if I have a problem with my Guardian Warm Roof?

In the unlikely event that you experience a problem with your Guardian Warm Roof, you should contact your original installer for assistance.  Each roof is bespoke and your installer will have a record of your project.  If you are unsure if your installer is a Guardian Certified Installer, please contact our customer service team on 0800 066 5832 for assistance.

Guardian Roof Lantern FAQ


What are the benefits of roof lanterns?

Roof lanterns can bring an abundance of light into a specific room within a home, fitted to a flat roof structure, the design of a roof lantern allows for light to enter a room from a wide variety of angles, improving the atmosphere and perspective of space within a room. The Guardian Roof Lantern has also been expertly designed and engineered to secure, strong and thermally efficient.

Do you need planning permission for a roof lantern?

Planning permission is not required specifically for a roof lantern, however it is highly likely that either planning permission or building control approval may need to be sought or any new structure being built on your private property. It is best to consult both with your builder/installer and the local authority building control.

What is the difference between a roof light and roof lantern?

A roof light tends to be a simple flat window light, a roof lantern can offer a more prominent and architecturally beautiful show piece to your home. Fundamentally it also allows in a greater amount of light from more angles and therefore can significantly increase the light within a room.

Do lantern roofs leak?

No roof lantern should leak and we ensure that we rigorously test this, the Guardian Roof Lantern is subjected to significant weather testing during its development to ensure that all aspects of the system are entirely waterproof.

How thermally efficient is a Guardian Roof Lantern?

Excellent thermal efficiency is a pre-requisite of the development of the roof lantern. By isolating the external aluminium profiles with the internal ones, we eliminate cold bridging, which causes heat loss. Furthermore high performance glazing sits within a glazing enclosure to further reduce any chances of head loss.

How secure is a Guardian Roof Lantern?

Our GUARD-Lock technology has been expertly designed to ensure that the Guardian Roof Lantern is exceptionally secure, with ‘click-fit’ rafters and secure glazing enclosures. It is highly resistant to any security risk or attempt.

Can you add a roof lantern to an existing roof?

Yes this is certainly possible with any existing flat roof structure. A professional builder will be able to assist with a thorough survey.

What is the Guardian Roof Lantern made from?

The Guardian Roof Lantern is made with Aluminium profiles. Aluminium not only provides the strength and security required, it is also exceptionally sustainable. Our roof lantern has also been designed with ultra-slim 12mm V profiles on the interior which allows for greater visibility – this has been made possible due to the strength of the aluminium materials which is far better than U-PVC.

Is it easy to construct and fit a roof lantern?

The Guardian Roof Lantern can be constructed within 60 minutes. It has been designed to have as few parts as possible, not only to achieve great strength and security, but also to make it easy to construct.

What size can a roof lantern be?

All of our Roof Lanterns can be made to a bespoke size, however the maximum size lantern that can be created is 3.2m by 2m with only 4 bars. Increases in size are certainly possible with the addition of support rafters.

What colour variations do you offer?

Standard colour options for both internal and external are Grey, Black and White. We find that a Grey external coloured combined with a White internal colour is the most popular option. However we are also able to customize a colour option as required, this option maybe subject to additional cost.

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