
Blackmore End Flat Roof Leak Detection
Professional Commercial Flat Roof Inspectors
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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Your Trusted Partner for Roof Membrane Integrity Testing and Commercial Flat Roof Leak Detection
We are dedicated to helping UK facilities managers and commercial property owners protect their investments through our expert leak detection and flat roof membrane integrity testing services. Whether you're installing a new green roof or maintaining an existing flat roof, our services are designed to ensure your roof's longevity and compliance with all industry standards.
Services We Offer
Green Roof Membrane Integrity Testing
Green roofs offer numerous environmental benefits but require specialised care when installing to ensure they maintain their integrity. Our Green Roof Membrane Integrity Testing service provides:
- Membrane Integrity Testing: The roof membrane will undergo a thorough visual inspection followed by electronic testing to ensure waterproofing integrity. Any identified faults will need to be promptly rectified, and the membrane retested to confirm its integrity before any additional layers are applied.
- Regulatory Compliance: Ensuring that your new green roof meets British Standards 6229:2018, NHBC Chapter 7.1 and the Premier Guarantee Structural Warranties requirements.
Commercial Flat Roof Leak Detection
Flat roofs in commercial properties are susceptible to leaks and water damage over time. Our Commercial Flat Roof Leak Detection service includes:
- Precision and Accuracy: Employing infrared thermography and electronic leak detection to locate leaks quickly and accurately.
- Minimal Disruption To Your Business: Non-invasive methods ensure your business operations continue smoothly.
- Comprehensive Protection: Regular inspections and prompt leak detection can prevent costly damage and repairs.
Why Choose Roof Leak Detection Specialists?
- Unbiased Assessments: As an independent third-party, our evaluations are impartial and reliable, essential for complying with Premier Guarantee Structural Warranties.
- Experienced Professionals: Our team is skilled in the latest membrane integrity testing and leak detection technologies and practices.
- Compliance Guaranteed: We ensure your roofing projects meet British Standards 6229:2018, NHBC Chapter 7.1. and Premier Guarantee Structural Warranties requirements.
Ensuring the integrity of your commercial roof is vital for both regulatory compliance and financial security. Our expert services help you maintain a leak-free, compliant roof, safeguarding your property and investment.
Why Is It Important To Identify Flat Roof Leaks Quickly
A flat roof is an important part of your building as it protects the structure and contents. Flat roofs can be more vulnerable to leaks that sloped roofs, and if they aren’t addressed quickly, a small leak can very quickly grow into a serious problem. 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 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 can be vulnerable to leaks due to a variety of factors including poor installation, poor maintenance, and exposure to severe weather. Flat roof leaks are caused by many factors such as cracked flashings, blocked gutters and punctures from fallen objects.
It’s important to remember not all roof leaks can be easily detected without the help of experts with the right tools and experience. 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 can provide commercial and residential roof cleaning, and maintenance services in Blackmore End and throughout the Hertfordshire area including Kimpton, Lea Valley, Wheathampstead, Nomansland, Whitwell, Harpenden, Codicote, Breachwood Green, St Pauls Walden, Welwyn.
Are you the owner of a flat-roofed building that leaks?

Electronic Flat-Roof Leak Detection Specialists
We are an independent UK flat roof leak detection company, with specialists in third-party electronic leak detection and integrity testing on all types of flat roofs and structural waterproofing membranes.
Our roof technicians are qualified to inspect all types of flat roofs in Blackmore End and throughout the Hertfordshire area, both residential and commercial. 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. We can conduct leak detection tests and surveys in any weather condition. After your flat roofing survey is complete, you’ll receive a complete Health and Safety Plan, Risk Assessments and Method Statements which together form an extensive O&M Manual.

New Flat, Green And Blue Roof Integrity Testing
All flat roofs that are new have to comply with NHBC Chapter 7.1, Flat Roofs, Terraces, and Balconies, as well as British Standard 6229, 2018 (Flat Roofs With Continuously Supported Flexible Waterproof Coverings, Code of Practice).
Before any roofing membrane is overlaid, it must be visually examined and electronically tested to ensure waterproofing integrity. The membrane should be repaired and retested before any further layers are added, 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. The testing should be performed by a third party unrelated to the roofing contract.
A roof survey will be done and all roof penetrations will be inspected. 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 know every job is unique, and we have the experience and training to handle all types of roofs and customer needs. All roof surveys are conducted in accordance to the requirements of major UK warranty companies, British Standards, The Property Care Association and CIRIA.
For more information on our Blackmore End flat roof leak detection services contact us today

For Property Protection, Rapid Leak Detection Is Crucial For Many Reasons.
- Preventing Structural Damage - Water leaks can damage your building’s structural integrity if they aren’t addressed promptly. These water leaks can lead to costly repairs and even the possibility of your building collapsing. You can preserve the structural integrity of your building and prevent more serious damage by detecting leaks early.
- Avoiding Mold And Mildew Growth 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. You can prevent mold and mildew spreading by early roof leak detection.
- Repair Costs Can Be Reduced - The longer that a roof leak remains unnoticed the greater the damage it will cause. This will result in more costly and complex repairs than if the leak was detected earlier. Rapidly identifying leaks can minimise damage and reduce repair costs.
- Energy Cost Savings - 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 reduce your energy consumption by finding roof leaks early.
- Reduce Your Insurance Costs - Insurance companies may increase your premiums if there is a history of water damage. Your insurance premiums can be reduced by finding any leaks promptly and avoiding any damage.
Lowering insurance costs: Insurance companies may increase your premiums if there is a history of water damage. Your insurance premiums can be reduced by finding any leaks promptly and avoiding any damage.
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 can appear in the form of discoloured patches, or even water droplets, and could indicate that there is a roof leak. Water stains on the ceiling may also be caused by plumbing leaks, therefore a professional roof inspection will help to pinpoint the source.
- Another sign that you have a flat roof leak, is peeling wallpaper or paint. The wallpaper or paint may start peeling off the walls when water seeps into the attic and through the ceiling. 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 mouldy or musty odour may also be a sign of a leak in your flat roof. Water can cause mould growth and mildew to grow inside the structure, which can lead to your property having a musty odour. This could present a significant health risk, and it must be fixed immediately.
- Another sign of a leaky roof is condensation on the roof’s inside. When the temperature inside of the building is warmer than the outside, condensation may build up on the roof. This can indicate a leak. It could also be caused by poor insulation or inadequate ventilation.
Remember that these symptoms can also be caused by other problems, so a professional roof inspection should be carried out to find the exact source of the problem.
For more information on our Blackmore End flat roof leak detection services contact us today
Roof Leak Detection Frequently Asked Questions
What is the most common defect in flat roof?
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.
Why do insurance companies not like flat roofs?
Why are flat roofs hard to insure? A flat roof collects debris and is subject to pooling, leading to roof damage and water leaks. It may require more professional roofing repairs or ongoing maintenance. Plus, flat roofs are not designed to bear as much weight as sloped roofs
Are flat roofs cheaper to replace?
A hallmark of modern home design, flat roofs can also be less expensive to install than sloped or pitched roofs. Flat roof repairs cost £700, on average, with high repair costs of about £1,100 and low costs around £300.
What are the problems with flat roofs?
Flat roofs tend to have more pressure exerted on them since they are flat instead of slanted. Sometimes this pressure can build up, and if the pressure and stress become excessive, it can cause your roof to crack. If your roof does crack, you should call a professional immediately.
How do you seal a hole in a flat roof?
Cut Patch and Coat Cut a patch that is about 6 inches longer and wider than the first patch. Spread roofing cement, set the patch into the cement, and spread another layer of cement over the patch. Once it has dried coat the area with aluminum-fiber coating.
Other areas near Blackmore End we cover include: