
Flat Roof Leak Detection Boxmoor
Professional Flat Roof Inspectors For Commercial Properties
Don’t let a leaking flat roof ruin your property
Contact us today to schedule an inspection and make sure your roof is in good condition
- Non Destructive Solution
- Accurately pinpoint your leak
- 99% Success Rate
- Prevents further damage to your property
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Premier Leak Detection and Roof Membrane Integrity Testing
We are committed to helping UK facilities managers and commercial property owners maintain leak-free, compliant roofs. Our focus on Green Roof Membrane Integrity Testing and Commercial Flat Roof Leak Detection ensures your roof's durability and adherence to industry standards.
Our Specialised Roofing Services
Green Roof Membrane Integrity Testing
Green roofs demand specialised attention when being installed to prevent leaks in the future and to maintain their benefits. Our Green Roof Membrane Integrity Testing service ensures:
- Independent Membrane Integrity Testing: Your roof will be thoroughly surveyed, with a detailed inspection of all roof penetrations. This assessment will include evaluating roof terminations, rooftop equipment mounts, the roof membrane condition, perimeter flashing, parapet wall coping, and any other elements that could affect the membrane's watertightness.
- Regulatory Compliance: Meeting the requirements of British Standards 6229:2018, NHBC Chapter 7.1. and Premier Guarantee Structural Warranties requirements
Commercial Flat Roof Leak Detection
Flat roofs are vulnerable to leaks that can lead to significant damage. Our Commercial Flat Roof Leak Detection service offers:
- Precision Detection: Employing infrared thermography and electronic methods for accurate leak identification.
- Minimal Business Interruption: Non-invasive techniques to ensure your operations remain uninterrupted.
- Cost-Effective Maintenance: Regular checks to identify and address leaks before they cause extensive damage.
Why Work With Us?
- Independent Expertise: As a third-party service provider, we deliver unbiased assessments, essential for Premier Guarantee Structural Warranties.
- Highly Skilled Team: Our experts are proficient in the latest roof membrane integrity testing and roof leak detection technologies and methods.
- Standards Compliance:
We ensure that your roofing complies with British Standards 6229:2018, NHBC Chapter 7.1. and Premier Guarantee Structural Warranties requirements
The Importance Of Identifying Flat Roof Leaks Quickly
Your flat roof is vital as it protects the structure and the content of your building from the weather. However, flat roofs have a higher risk of leaking than sloped roofing, and if not dealt with promptly, even a minor leak can become a major problem very quickly. Flat roof leaks can lead to multiple water entry points in the area below, which could cause severe damage to your property and the contents. Our roof leak detection specialists can inspect your roof to identify the source of the leak quickly and prevent costly repairs and replacements.
Flat roofs can leak due to many factors including, poor installation, inadequate maintenance, or exposure to severe weather. Flat roof leaks could be caused due to cracked flashing, blocked gutters or punctures caused by falling objects.
It is important that you remember that not all roof problems are obvious, roof leak experts have the experience and the tools to be able to detect roof leaks. Regular professional roof inspections can maintain the integrity of your roof and help to detect any potential problems before they become major ones.
Our team provides both residential and commercial roof cleaning and roof maintenance services in Boxmoor and throughout the Hertfordshire area, including Chaulden, Hemel Hempstead, Apsley, Gadebridge, Bennetts End.
Do you have a building with a flat roof area that leaks?

Experts In Electronic Flat Roof Leak Detection
We are an independent UK flat roof leak detection company, who specialise in third-party electronic leak detection and integrity testing of all types of flat roofs and structural waterproofing membranes.
Our Boxmoor roof technicians can test any type of flat roof, both residential and commercial, throughout the Hertfordshire area. They use non-destructive flat roof electronic leak detection methods like low voltage earth leakage testing, high dielectric electronic integrity testing, differential pressure vacuum testing, drone surveying & thermal imaging to locate the entry point quickly and precisely. We can conduct leak detection tests and surveys in any weather condition. After the flat roof inspection is completed, you will receive an O&M Manual that includes a comprehensive Health and Safety Plan, Risk Assessments and Method Statements.

Integrity Testing For New Flat, Green And Blue Roofs
Any new flat, green or blue roofs must comply with NHBC chapter 7.1 of Flat Roofs. Terraces. And Balconies and British Standard 6229. 2018 (Flat Roofs with Continuously Supported Flexible Waterproof Coverings. Code of Practice).
It is important to visually inspect and electronically test the waterproofing integrity of roofing membranes before they are overlaid. Any problems should be addressed and the membrane tested again before any further layers are applied, according to NHBC Chapter 7.1.9 (Green Roofs & Propriety Roofs).
Premier Guarantee Structural Warranties go one step further. According to section 7.11.25.2 of the “Roof Coverings – Green Roofing” section 7.11, the waterproof membrane must be tested for integrity before any other components are added to it. Testing should be performed only by an outside party that is not involved in the roofing contract.
A roof survey will be done and all roof penetrations will be inspected. This will include an inspection of any roof penetrations, terminations, mounts for equipment, roof membrane conditions, parapet wall coping and perimeter flashing.
{While vacuum testing membrane seams off-site can be a great way to assess quality, it is not recommended for proving flat roof integrity.|Vacuum testing of seams of membranes done off-site is an excellent way to determine quality but it is not recommended to be used to verify the integrity of flat roofs.|Although it can be useful to test the quality of seams off-site, it is not recommended as a method to prove flat roof integrity.|While it’s a good way of evaluating quality, vacuum testing membrane seams is not recommended to prove flat roofs’ integrity.
We understand that every job can be different and our team have the experience and knowledge to handle any kind of roof and customer requirements. All our roof surveys follow the requirements of all major UK warranty providers as well as British Standards, The Property Care Association, and CIRIA.
For more information on our Boxmoor flat roof leak detection services get in touch today

It Is Vital To Detect A Leak Quickly For Property Protection.
- Prevention Of Structural Damage - If not taken care of promptly water leaks can harm your building’s structural integrity. This could lead you to expensive repairs or even a building collapse. Early detection of a leak can help you preserve your building’s structural integrity and prevent further damage.
- Avoiding Mold And Mildew Growth If your roof has leaks, mould and mildew can grow, which can be very bad for the health of the people who occupy your building. By detecting roof leaks early, you can help keep your building safe by stopping the spread of mildew and mould.
- Reduce Repair Costs - The longer roof leaks go unnoticed, the more damage that they cause. This will mean that repairs are more complicated and expensive than if the problem was identified earlier. It is possible to reduce damage and repair costs by quickly identifying leaks.
- Save On Energy Costs - A roof leak can cause draughts and make it harder to keep your building at a comfortable temperature, which can increase your energy costs. You can cut down on your energy costs by finding roof leaks and fixing them quickly .
- Lowering Insurance Costs - Insurance companies may increase your premiums if there is a history of water damage. It is possible to keep your insurance premiums down by identifying any leaks early and avoiding damages.
Reduce Your Insurance Costs Insurance companies may increase your premiums if there is a history of water damage. It is possible to keep your insurance premiums down by identifying any leaks early and avoiding damages.
Flat Roof Leaks: Common Symptoms
- Water stains on the ceiling is one of the best indicators that a flat roof leak is occurring. These stains could be either discoloured patches or water droplets and can indicate that your roof is leaking. To find the source of the problem, a professional roof inspector is required, as water spots on the ceiling could also be caused other problems such as plumbing leaks.
- Another sign that you have a flat roof leak, is peeling wallpaper or paint. Leakage can be signalled by peeling wallpaper or paint which is caused when water seeps from the ceiling into the attic. This can also be caused by high humidity or condensation, so it is important to have a professional inspect the roof to ensure there are no leaks.
- Moldy or musty odour could also be an indication of a leaky flat roof. A leaky roof can promote the growth of mold or mildew and cause a musty odour. This could present a significant health risk, and it must be fixed immediately.
- Condensation from the inside is another indication of a flat roofing leak. When the temperature inside of the building is warmer than the outside, condensation may build up on the roof. This can indicate a leak. This could also be due to inadequate insulation or poor ventilation.
It is important to remember that symptoms like these can also be caused by other problems, therefore a professional roof inspection is necessary to pinpoint the root cause.
For more information on our Boxmoor flat roof leak detection services get in touch today
Flat Roof Leak Detection Frequently Asked Questions
Why put gravel on a flat roof?
Gravel and pea shingle have two primary purposes on a flat roof; they provide a 'loading coat' and they afford UV protection. As ballast, the gravel will help anchor the material underneath and lower the risk of it being blown off in high winds.
Does walking on a flat roof damage it?
Flat Roofs A flat roof is less precarious than a pitched one, but you still run the risk of damaging the felt and potentially going through the membrane. You're less likely to cause damage on a warm day, and it's generally advisable to lay boards across it to walk on.
What do roofers use on flat roofs?
The most common ones include EPDM rubber, single-ply (TPO, PVC), modified bitumen, built-up roofs (BUR), and spray polyurethane foam. Many homeowners choose either EPDM or TPO. EPDM roofs are affordable and can reach a lifespan of 30+ years.
What is the most common defect in flat roof?
Leaks. Leaks are an all-too-common occurrence in buildings with flat roofs. This is mostly because flat roofs tend to lose their ability to effectively shed water if not properly maintained. Once moisture is unable to drain from the roof, it's just a matter of time before it finds its way into the building.
Should a flat roof hold any water?
Whilst brief and occasional ponding is acceptable on a flat roof, regular or long-lasting ponding could be an indication that there is an issue with the roof that needs to be addressed.
Other areas near Boxmoor we cover include: