Guardian Building Systems Reviews 21

TrustScore 3.5 out of 5

3.3

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Rated 1 out of 5 stars

We had a guardian roof installed on our conservatory in April and all went well until we chased the builder for the building control certification. They made excuse after excuse, saying it was i... See more

Company replied

Rated 4 out of 5 stars

Our new roof was expertly installed and has proven to be a real improvement to a conservatory that was unusable for many months of the year. The only downside is that the roof tiles have faded and hav... See more

Rated 5 out of 5 stars

We are really happy with the customer service, the product and the work being done on our 'P-shape' conservatory roof. The team worked very efficient and professional and it only took two days to co... See more

Company replied

Rated 5 out of 5 stars

My Company has installed this roof for the past 10 years. Its a great product that works well and does the job. We have installed 500+ roofs and we do not have any issues with our guarantees or back u... See more

Company replied

Company details

  1. Building Design Company
  2. Construction Company
  3. Design Engineer
  4. Manufacturing Service
  5. Roofing Contractor

Written by the company

Guardian Building Systems stands at the forefront of home improvement innovation. With over two decades of experience in this market, coupled with our commitment to technical excellence, we have developed a range of solutions that not only enhance the aesthetic and functional aspects of homes but also ensure comfort and energy efficiency. These include the innovative Guardian Warm Roof, elegantly designed Guardian Roof Lantern, and the revolutionary Guardian Home Extension. We are proud to have a nationwide network of Certified installers that are trained to fit the Guardian Warm Roof and Guardian Home Extension. A 10 year product warranty is provided by Guardian Building Systems on all systems fitted by a Certified Installer, we also require our network of Certified Installers to provide a 10 year workmanship guarantee and an insurance backed guarantee. The original and marketing leading Guardian Warm Roof has been installed in over 100,000 homes across the UK and: - Is independently tested by the BRE to validate its engineering and construction, - Made from robust and lightweight aluminum, - Meets U-Value regulations across, Scotland, England and Wales, - Is an approved system by Hertfordshire Building Control, We are ready to help you transform your home with one of our revolutionary systems.

OUR GUARANTEE TO YOU

OUR GUARANTEE TO YOU

OUR GUARANTEE TO YOU
When installed by a Certified Installer, your Guardian Warm Roof will be covered by the following: 10 Year Product Warranty provided by Guardian Building Systems 10 Year Workmanship Warranty provided by the Certified Installer Insurance Backed Guarantee provided by the Certified Installer

Contact info

3.3

Average

TrustScore 3.5 out of 5

21 reviews

5-star
4-star
3-star
2-star
1-star

Replied to 100% of negative reviews

Typically takes over 1 month to reply

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Rated 1 out of 5 stars

Failure to supply building control sign off

We had a guardian roof installed on our conservatory in April and all went well until we chased the builder for the building control certification. They made excuse after excuse, saying it was in hand, when absolutely nothing had been done about it so we now have an un-certified conservatory roof.

As it was guardian who recommended that “certified” builder we got in touch with them who initially responded but have now heard nothing from them for over 2 months.

There are alternative companies who provide conservatory roofs and building control sign off as standard (ones that actually complete it and not just brag about it on their website to lure you in).

Avoid guardian at all costs!

December 2, 2025
Unprompted review
Guardian Building Systems logo

Reply from Guardian Building Systems

Thank you for your review. We have tried to call you today to discuss this with you and have also been in contact with your builder again to follow up on this matter. We will try to call you again to discuss this further.

Rated 4 out of 5 stars

Roof tile issue

Our new roof was expertly installed and has proven to be a real improvement to a conservatory that was unusable for many months of the year. The only downside is that the roof tiles have faded and have white specks emerging. I contacted Guardian early in 2025 who advised me that the tile was indeed defective and would be replaced under warranty when a new tile was available possibly in May 2025. I have chased them up but have had no reassurance about the replacement, hopefully they will come good soon.

June 28, 2025
Unprompted review
Rated 1 out of 5 stars

Paid for roof but haven't got it.

Booked to have a roof fitted with one of their trusted companies Guardian Roofs Nationwide. They liquidated after we paid them.
Basically Guardian Building Services, who leads "Team Guardian" have washed their hands of it and told us their a separate company, yet they was quick to put us in touch with Guardian Roofs Nationwide.

There's also several others in the same boat as me.

June 10, 2024
Unprompted review
Rated 5 out of 5 stars

An outstanding job from start to finish…

An outstanding job from start to finish by the BJC team - all seasoned craftsmen. Highly professional planning and execution and attention to every detail throughout the construction.
The Guardian Roof system itself worked exactly as described and had been planned and manufactured down to the last detail prior to delivery.
The finished roof is solid and very good looking and looks as though it will stand the test of time - and weather - on the west coast of Scotland.

April 30, 2024
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We are glad to hear that you are happy with the system!

Rated 5 out of 5 stars

Absolutely over the moon with my new…

Absolutely over the moon with my new roof. Best thing I ever did for my conservatory.

August 16, 2023
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We are glad to hear that you are happy with the system!

Rated 5 out of 5 stars

Excellent product

Excellent product. Fitted by true professionals

July 31, 2023
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We are glad to hear that you are happy with the system!

Rated 5 out of 5 stars

Excellent roof, well fitted.

We love our Guardian roof. We have had it for 2 years now and not only does it look nice but it makes our conservatory warm in the winter and cooler in the summer. It has just transformed the room and the house. Roofline who fitted it were excellent and were totally focussed on customer satisfaction and doing a good job. Very pleased.

March 22, 2024
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We glad to hear that you are happy with the system!

Rated 5 out of 5 stars

Flawless installation

Very smooth, no-hassle installation including lighting and plastering. It's transformed the conservatory which is now in constant use. Would highly recommend.

June 12, 2023
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We glad to hear that you are happy with the system!

Rated 5 out of 5 stars

Roofline are a great company from top…

Roofline are a great company from top to bottom. The advice, planning and implementation were top-notch, and I can thoroughly recommend both the company and the products.

March 22, 2024
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We glad to hear that you are happy with the system!

Rated 5 out of 5 stars

Well planned out logistically and all…

Well planned out logistically and all ran smoothly, very friendly, helpful and understanding staff all round from office to boss to workmen of all trades involved, fantastic workmanship all round and extremely happy with the finished product. Have spent the first winter in many years using my conservatory as an actual room instead of shutting it off as it was too cold to think about, also enjoyed it during the summer as wasn’t like a greenhouse. All round a fantastic product. I highly recommend

May 8, 2023
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We glad to hear that you are happy with the system!

Rated 5 out of 5 stars

Straight professional good job.

Straight professional good job.

They did a great job on the roof. Couple of little things that went off piste they sorted no issues. Would use these guys again

March 21, 2023
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We glad to hear that you are happy with the system!

Rated 5 out of 5 stars

Brilliant company

The professional manner in which the whole team worked, and kept us informed every step of the way. Any issues with build was dealt when council's questioned it. Couldn't be happier and it looks. Good and has kept us warm this winter. Thanks to Matt, Sam and Kelly, great team.

March 21, 2023
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We glad to hear that you are happy with the system!

Rated 5 out of 5 stars

Fabulous!

Very impressed with the installation of the roof for my conservatory, from start to finish Guardian team were very professional and completed on time. Highly recommend. A* service! Thank you Matt & Kelly

February 5, 2024
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We glad to hear that you are happy with the system!

Rated 5 out of 5 stars

My Company has installed this roof for…

My Company has installed this roof for the past 10 years. Its a great product that works well and does the job. We have installed 500+ roofs and we do not have any issues with our guarantees or back up from the fabricators or systems house. Our customer always leave glowing reviews on google. We have been in business for 25+ years and have experience in all home improvements so this was a great product to bring to the company. If your looking for a Quote in or around Leicestershire please try The Roofline Replacement Company Limited and check out our company reviews on google.

March 21, 2024
Unprompted review
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Reply from Guardian Building Systems

Many thanks Matt for the positive feedback!

Rated 5 out of 5 stars

Excellent product followed up by a very…

Excellent product followed up by a very good installation team and customer service. The installation of our rooflight was not straightforward, however the team made it happen.

March 21, 2024
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Reply from Guardian Building Systems

Many thanks for the positive feedback. We glad to hear that you are happy with the system.

Rated 5 out of 5 stars

Conservatory Roof - Warm Roof Conversion

We are really happy with the customer service, the product and the work being done on our 'P-shape' conservatory roof. The team worked very efficient and professional and it only took two days to complete the job. The plastering was done in a day. This is now a massive improvement to our home with additional living space all year round.

We are glad with our decision to go with Guardian and can happily recommend.

February 19, 2024
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Reply from Guardian Building Systems

Very good to hear the positive feedback and glad that you are happy with the Guardian Warm Roof.

Rated 5 out of 5 stars

Really great bit of kit

Did quite a lot of research into roof lanterns for our new extension. We chose the Guardian Roof Lantern for our new extension as we really liked the slim profile and the cost was really competitive, it is now fitted and looks great and lets in a lot of light.
My builders said it was so much easier to construct and fit than all the others they had previously used and would be using the Guardian one from now on for future projects.

January 20, 2024
Guardian Building Systems logo

Reply from Guardian Building Systems

Many thanks for the positive feedback. We glad to hear that you are happy with the system.

Rated 1 out of 5 stars

Guardian guarantees are worthless

UPDATE as at 21 March 2024

I suggest you look again at your customer records and you will find a quote from Martin Bishop, Director in 2016. There is also correspondence last November with Laura Watson, Customer Services Executive, dated 13,16, 22 and 27 November 2023
....................

Had a Guardian roof installed in 2017, by an Approved Installer. After a couple of years we noticed water staining on the ceiling. We asked Guardian for advice. They said it could be due to condensation, but failed to offer any solutions. The Installer ceased trading in 2021, without putting in place any Guarantees about their workmanship. We have contacted Guardian numerous times. But they have failed to offer any advice, support or redress for their defective product, which did not have any cross flow ventilation, which was causing the condensation. Be warned. Guardian guarantees are worthless. They hide behind the work of the installer

March 15, 2024
Unprompted review
Guardian Building Systems logo

Reply from Guardian Building Systems

Dear Mr Argent, Please accept our apologies, we have found all of the previous correspondence regarding your case.
Our records show that our customer services team have assisted you and connected with a Certified Installer who carried out a site visit at your property. The technical report and findings, that were provided to you, highlighted some areas of poor installation by a company that was not a Certified Installer. Our Certified Installer offered to provide a quote for resolution. From our records we received no further response. On that basis, we do not agree with you or believe it is a fair reflection of our communication that we have failed to offer advice or support in your case.
If you do wish to discuss this further, please contact our customer service team on 08000 665 832 and we can pick up from the last communication.


Dear Mr Argent, we have checked our customer services records and do not have a record of any contact with you under this name. Please do call us on 08000665832 as it is possible that your specific case may have been recorded but it may have been under a different name within your family.

Rated 1 out of 5 stars

Hide behind website, installers and fabricators - Avoid!!!!

Edit 2:
You stated in your reply, 'We remain open to further discussion through our customer services team.'
So, I rang you customer service team today. Immediate outcome - customer services declined to take part in any further discussion!
Also, readers please note:
- Some of these reviewers have been 'invited' to leave a review
- Guardian removed their previous Trustpilot page "Guardian Warm Roof HQ", which was 2.6 stars.

Edit 1 in reply to Guardian's response:
On an archived version of your old website in 2015, guardianroof.co.uk, you stated in the consumer information, 'They [as in installers] should always carry official team Guardian identification to verify their status. Team Guardian members should also provide guarantees and insurance backed warranties....Your Guardian Roof can only be installed by a Team Guardian member.' Our Guardian warm roof WAS installed by a member of 'Team Guardian'. You verified this over the phone at the time. Their Team Guardian reference number appears on the paper work - you verified this number at the time. The installers also appear on your Facebook page where you were showcasing their work as members of 'Team Guardian' (we have screen shots). All you appear to have done in 2021 is rebranded your website, swapping the wording from 'Team Guardian' to 'Certified installers'. Other than that, there appears to be no difference. In our final correspondence with you, your director wrote, 'we are not able to continue the ongoing communication and dialogue'.

Original Post:
Our Guardian Roof installers (August Home Improvements, owned by Neil Harper) were Guardian certified installers (recommended by Guardian). They were complete cowboys despite the reassurance offered by Guardian, who later confirmed they take absolutely no responsibility for their certified installers. Transparency is seriously lacking with this company and it's set up.

The installers then went bust and we began having problems with the roof. We have since discovered the roof does not meet building regulations and is completely unfit for purpose. In some places it is structurally unsound. The certified installers have liquidated so the 10 year guarantee is worthless and the insurance back money guarantee only lasted 2 years so is also useless. Beyond putting us in contact with further certified installers to rectify the problem (which cannot be done without a whole new roof at our expense) Guardian have offered no financial compensation and say it is nothing to do with them.

So be VERY carefully getting a Guardian Warm roof. When viewing installers work be aware that problems often don't show up until several years down the line (ours was 3 years old before the problems started).

The certified installer scheme means NOTHING. These are limited companies that liquidate at the first sign of trouble, leaving you without a leg to stand on. It is the 'double glazing sales scandal' of the conservatory roof world and Guardian Warm Roofs is taking full advantage in my opinion.

March 15, 2024
Unprompted review
Guardian Building Systems logo

Reply from Guardian Building Systems

Mrs Burchell, We continue to have communication and dialogue with you through our customer services team and through these public forums, it is not fair or accurate to suggest that we declined to take part in any further discussion. Our customer services team have responded to clarify our position again with you. In our latest response we have again restated our position which has not changed.



Further to our previous communication Mrs Burchell, your Guardian Warm Roof was not installed by a Certified Installer. Our Certified Installer scheme started in 2021 and ensures that all Certified Installers have an insurance backed guarantee in place. We are sorry that you have experienced issues with your installation. We remain open to further discussion through our customer services team.

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