
Flat Roof Leak Detection Abbots Langley
Experienced 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
Request A Free Quote
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.
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. 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 inspectors can inspect your roof and determine the source of the leak quickly, which will help you to avoid costly repairs and replacements.
Poor installation, poor maintenance and exposure to severe weather can all make flat roofs susceptible to leaks. Flat roof leaks may be caused by cracked flashing, punctures from falling objects and blocked gutters.
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 regular roofing maintenance plan will help to keep your roof in good repair over the long term, and regular roof inspections can also be helpful to detect minor leaks before they become serious problems.
Our team provides both commercial and residential roof cleaning services throughout Abbots Langley as well as the entire Hertfordshire region, including Bedmond, Kings Langley, Nash Mills, Apsley, Bennetts End.
Do you own 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 roof technicians are qualified to inspect all types of flat roofs in Abbots Langley and throughout the Hertfordshire area, both residential and commercial. 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. It doesn’t matter what the weather is like for a leak detection survey. 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.

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).
It is important to visually inspect and electronically test the waterproofing integrity of roofing membranes before they are overlaid. 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 extend this a 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 done by a third party, who is not related 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 of our roof surveys are done in compliance with all requirements of major UK warranty providers, British Standards, The Property Care Association and CIRIA.
For more information on our Abbots Langley flat roof leak detection services get in touch today

You Need To Be Able To Quickly Detect Leaks In Order For Your Property To Be Protected For A Variety Of Reasons.
- Prevention Of Structural Damage - If not taken care of promptly water leaks can harm your building’s structural integrity. This could cause costly repairs, or worse, your building may collapse. Early detection of a leak can help you preserve your building’s structural integrity and prevent further damage.
- Mould And Mildew Growth Avoidance- Roof leaks can result in the growth of mould and mildew, which can have detrimental effects on the health of your building’s occupants. You can keep your building safe, healthy and free from mould and mildew by finding leaks in the roof early.
- Reducing Repair Costs - The longer a leak is not fixed the more damage it creates. This will result in more costly and complex repairs than if the leak was detected earlier. By identifying leaks quickly, you can reduce damage and save money.
- Saving On Energy Costs - A roof leak could also lead to higher energy bills, as the leak’s location can cause draughts, which can make it harder for your building to stay at a moderate temperature. If roof leaks can be detected early it could reduce your energy costs.
- Reduce Your Insurance Costs - If your building has a history of water damage, your insurance company may charge you higher premiums. It is possible to keep your insurance premiums down by identifying any leaks early and avoiding damages.
Reducing insurance costs: If your building has a history of water damage, your insurance company may charge you higher premiums. It is possible to keep your insurance premiums down by identifying any leaks early and avoiding damages.
Common Symptoms Of A Flat Roof Leak
- Water stains on the ceiling are the most obvious signs of a leaking roof. These stains could be either discoloured patches or water droplets and can indicate that your roof is leaking. Because water stains can occur on ceilings due to other issues, such as plumbing leaks, a professional roof inspection may be necessary.
- 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. Condensation or high humidity can also cause this problem, therefore, it is crucial that a professional roof inspector assesses your roof for any leaks.
- A mouldy or musty odour may also be a sign of a leak in your flat roof. The growth of mould and mildew can occur when water enters the structure, leaving you with a musty odour. This can pose a serious health risk and must be addressed immediately.
- Another sign of a leaky roof is condensation on the roof’s inside. If the temperature inside the building is higher that the outside, condensation can form on the roof surface. This signals a leak. This can also be caused by poor insulation or inadequate 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 Abbots Langley flat roof leak detection services get in touch today
Flat 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 Abbots Langley we cover include: