
How Wood Flat Roof Leak Detection
Experienced Flat Roof Inspectors For Commercial Properties
Don’t allow a flat roof leak to cause damage to your property
Call now to book an inspection and make sure your roof is secure and in good condition
- Non Destructive Solution
- Accurately pinpoint your leak
- 99% Success Rate
- Prevents further damage to your property
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Ensuring Your Commercial Roof’s Longevity and Integrity
We understand the critical importance of maintaining the integrity of your commercial roofing system. Whether you are fitting a new green roof or managing an existing flat roof, our comprehensive leak detection and membrane integrity testing services are designed to safeguard your investment and ensure compliance with industry standards.
Our Services
Green Roof Membrane Integrity Testing
Green roofs are not only environmentally friendly but also require specialised care to prevent leaks and ensure durability. Our Green Roof Membrane Integrity Testing service utilises cutting-edge technology to ensure that your roof is compliant with all relevant standards.
- 3rd Party Membrane Integrity Testing: The roof membrane visually inspected and electronically tested for waterproofing integrity, faults rectified and retested before further layers are placed.
- Compliance Assurance: Our testing aligns with British Standards 6229:2018 and NHBC Chapter 7.1, ensuring your roof meets all necessary regulations.
Commercial Flat Roof Leak Detection
Flat roofs are a common feature in commercial buildings but are often prone to leaks due to weather exposure and structural stresses. Our Commercial Flat Roof Leak Detection service offers:
- Accurate Detection: Utilising the latest in infrared thermography and electronic leak detection to pinpoint leaks accurately.
- Minimised Disruption: Non-invasive techniques ensure minimal disruption to your business operations.
- Peace of Mind: Regular inspections and prompt leak detection help maintain the integrity of your building and avoid costly repairs.
Why Choose Us?
- Independent Verification: As an independent third-party, our assessments provide unbiased and accurate evaluations, essential for new builds and existing structures. This independence is crucial for meeting the Premier Guarantee Structural Warranty.
- Expertise and Experience: Our team of specialists is highly trained and experienced in the latest leak detection technologies and methods.
- Regulatory Compliance: We help you adhere to British Standards 6229:2018 and NHBC Chapter 7.1, ensuring your roof meets all industry requirements.
Stay Compliant and Protect Your Investment
In today's commercial landscape, ensuring the structural integrity of your roof is more important than ever. Not only does it protect your property, but it also ensures you stay compliant with essential building standards and warranties.
Get in Touch
Protect your commercial property with our expert leak detection services and roof membrane integrity testing services. Contact us today to schedule an inspection or to learn more about how we can ensure your new green roof is compliant with all required construction standards and regulations.
Call us today or fill out our contact form to get started. Our team is ready to assist you in keeping your roof leak-free and compliant with all relevant standards. With Roof Leak Detection Specialists, you can be confident that your commercial roofing needs are in expert hands.
Flat Roof Leaks: The Importance Of Identifying Then Quickly
A flat roof is an important part of your building as it protects the structure and contents. Flat roofs are more likely to leak than sloped roofs and even a minor leak can very quickly escalate into a major problem if it’s not fixed promptly. A leak in your flat roof can lead to multiple water entry points, which can cause serious damage to your property and the contents. Our roof inspection experts can help identify the source of leakage quickly, preventing any serious damage to your property and its contents, avoiding costly repairs and replacements.
Flat roofs are susceptible to leaks because of a number of factors, including inadequate installation, poor maintenance, and being exposed to severe weather. Flat roof leaks may be caused by cracked flashing, punctures from falling objects and blocked gutters.
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. A good roofing plan can keep your roof in great condition for a long time, and routine professional roof inspections are a good way of identifying any minor leaks before they become a more serious problem.
Our team provides both residential and commercial roof cleaning and roof maintenance services in How Wood and throughout the Hertfordshire area, including Park Street, St Julians, Sopwell, St Stephens, St Albans.
Are you the owner of a flat-roofed building that leaks?

Specialists 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 How Wood roof technicians can test any type of flat roof, both residential and commercial, throughout the Hertfordshire area. They will quickly and accurately locate the entry point using non-destructive flat roof electronic leak detection techniques such as low voltage earth leakage testing, high voltage dielectric electronic integrity testing, differential pressure vacuum testing, thermal imaging and drone surveying. Leakage surveys and tests can be performed in all weather conditions. 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
New flat, green and blue roofs must adhere to NHBC Chapter 7.1 Flat Roofs, Terraces and Balconies, as well British Standard 6229: 2018, (Flat Roofs with Continuously Supported Flexible Weatherproof Coverings, Code Of Practice).
Before roofing membranes are overlaid, they should be visually checked and electronically tested for waterproofing. Any defects should be repaired and the membrane should be retested before adding additional layers, as per NHBC Chapter 7.1.9 (Green Roofs & Propriety Roofs).
Premier Guarantee Structural Warranties take it a step further. The waterproof membrane must be checked for integrity before applying any other components, as per section 7.11.15.2 under “Roof Coverings –Green Roofing” section 7.111.11. The testing should be performed by a third party unrelated to the roofing contract.
An inspection of all roof penetrations will be performed and the roof will be surveyed. This includes an inspection and assessment of all 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 comply with the requirements set forth by the major UK warranty providers as well as British Standards, The Property Care Association, and CIRIA.
For more information on our flat roof leak detection in How Wood contact us today

It Is Vital To Detect A Leak Quickly For Property Protection.
- Preventing 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 leak detection can save your building’s structural integrity and help to avoid further damage.
- Preventing The Formation Of Mold And Mildew - Roof leaks can lead to the growth of mildew and mould, which can have a negative impact on the health and well-being of the building’s occupants. 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 require more expensive and complicated repairs than if it was discovered sooner. By identifying leaks quickly, you can reduce damage and save money.
- Saving On Energy Costs - Roof leaks can lead to higher energy costs, because the leaks location may result draughts making it more difficult to maintain a comfortable temperature. You can cut down on your energy costs by finding roof leaks and fixing them quickly .
- Reduce Insurance Costs - If your building has a history of water damage, your insurance company may charge you higher premiums. Avoiding water damage by finding leaks quickly can help you keep your insurance premiums low.
Reducing insurance costs: If your building has a history of water damage, your insurance company may charge you higher premiums. Avoiding water damage by finding leaks quickly can help you keep your insurance premiums low.
Flat Roof Leaks: The Signs To Look For
- Water stains on the ceiling is one of the best indicators that a flat roof leak is occurring. These stains may appear as discoloured patches or water droplets and can indicate a leaking roof. Because water stains can occur on ceilings due to other issues, such as plumbing leaks, a professional roof inspection may be necessary.
- Peeling paint or wallpaper is another sign that your flat-roof could be leaking. When water seeps down through the ceiling and into your attic, wallpaper or paint may peel off from walls. This could indicate a leak. High humidity and condensation could also be the cause of this, to ensure that there are no leaks, it is essential to have a professional roof inspector examine your roof for any leaks.
- A flat roof leak could be the cause of a musty or mouldy odour. Water can cause mould growth and mildew to grow inside the structure, which can lead to your property having a musty odour. This could pose a risk to your health and should be repaired immediately.
- Condensation from the inside is another indication of a flat roofing leak. If the temperature inside the building is higher that the outside, condensation can form on the roof surface. This signals a leak. It could also be caused by poor insulation or inadequate ventilation.
Keep in mind, however, that these symptoms may also be caused by other issues, therefore, a professional roof inspection will be required to determine the actual source of the problem.
For more information on our flat roof leak detection in How Wood contact us today
Roof Leak Detection Frequently Asked Questions
Does insurance cover flat roofs?
Insurers in most cases will define flat roofs as being pitched at 10 degrees or less. Having a small part of your roof being flat usually is not a problem, but if over 25% of your roof is flat, you may find that most insurers may not be able to offer you any cover at all.
How long does flat roof sealant last?
Summary: roof coating systems last 10-20 years, but once they reach the end of their warranty, they can be recoated and a new warranty begins. The process can be repeated, making roof coating systems a renewable and sustainable roofing system.
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.
Should I avoid buying a house with a flat roof?
Flat roofs are considered versatile and simple to maintain, but they can also be costly to repair. They are an energy-efficient alternative to sloped roofs but often come with issues such as a higher risk of leaking and water pooling. Flat roofs often have a shorter lifespan compared to sloped roofs
What is the major disadvantage of using a flat roof?
The biggest drawback of flat roofs is the drainage or lack thereof. Sure, flat roofs do have a slight slope that drains the water, but not nearly as efficiently as a pitched roof. The rainwater tends to remain on the roof and form a puddle, which can lead to possible leaks or material damage
Other areas near How Wood we cover include: