You see damp patches or mold on the wall and want to quickly locate a leak. We at Ultrices Leak Detection find causes in water pipes, central heating pipes, and rainwater drains.
Using thermography, infrared camera, acoustic measurement, smoke test, dye tracer, gas moisture meter, and pressure test, we work precisely and without breaking into brick, concrete, plaster, and joints.
We check cavity walls, crawl spaces, basements, and facades for rising damp, condensation, and penetrating damp, including sealing expansion joints and salt efflorescence. Read our Google reviews 5/5 via experiences with detecting a leak in a wall.
Table of contents
What is detecting a leak in a wall?
Detecting a leak in a wall means locating hidden water loss in solid walls, cavity walls, or behind wall finishes. We combine building physics with geometry and use thermography, acoustic leak detection, hygrometry, and tracer gas to pinpoint the leak exactly. In doing so, we examine capillary action, vapor transport, dew point, and hydrostatic pressure as described in NEN 2778 and the ISO 6781 practical guidelines for thermal imaging. This allows us to objectively map the moisture source and prevents unnecessary demolition. At Ultrices Leak Detection, we combine fifteen years of experience with professional equipment from FLIR for infrared, Trotec for moisture measurement, and Ridgid for endoscopy, supported by methods recognized within Kiwa and TNO frameworks.
How we detect a leak in the wall without hacking or breaking.
We start with a hypothesis based on your symptoms and our model for water behavior in walls. We then test this using multiple techniques to build cross-evidence. Examples include thermography to visualize cold moisture trails, acoustic logging to isolate flow noise in pipes, fluorescein dye tests on drains, and tracer gas with a hydrogen mixture in closed water supply systems. We use endoscopy to inspect cavity anchors, foil, and detailing. If you want to see exactly how this works, read how we measure without causing damage in our article about leak detection without heels.
Causes and types of wall leakage in homes and businesses
- Water pipe leak in wallPressure loss on cold or hot water causes wet spots, temperature deviation, and sometimes hiss. An example is a compression fitting behind tiling that is sweating.
- Drain or sewer leakGaps in the socket or a crack in the riser pipe cause odor and brown discolored joints. Dye and a smoke test make this visible.
- Facade penetration and rain penetration: Porous jointing, open weep holes, or leaking frame connections transport rain indoors.
- Condensation and thermal bridge: Low surface temperature around lintels and piers causes dew point condensation that looks like a leak.
- Rising damp and crawl space vapor: Capillary transport through masonry and leaking base joint details causes skirting boards and plasterwork to detach.
Step-by-step wall leak detection process
- IntakeWe discuss complaints, year of construction, materials, and recent renovations, and analyze photos and measurements you already have.
- Visual inspectionWe inspect sealant joints, grouting, pipe penetrations, skirting boards, and seams around window frames and sanitary fixtures.
- Zero measurementUsing a hygrometer and moisture meter, we determine moisture percentages and relative humidity and record a moisture map.
- Measuring combination: FLIR thermography, acoustic correlation, pressure test and, where necessary, tracer gas or dye to isolate the source.
- Pinpoint and proofWe mark the exact leak and collect photographic evidence and measurement reports in accordance with NEN standards.
- Report and adviceWithin three days, you will receive an expert report detailing the cause, extent of the damage, photos, and a repair plan, including insurance sections.
Leak detection process request
Signs and quick checks for a leak in the wall
- Damp wall or dark spotsMoisture streaks that widen after showering or rain indicate active supply.
- Soft skirting boards and peeling plaster: Capillary action makes skirting boards spongy and plasterwork powdery.
- Mold and musty smell: Prolonged exposure to moisture causes microbiological growth behind paint or wallpaper.
- High water bill or pressure dropContinuous loss in water pipe causes unusual consumption and noise in pipe shaft.
- Circuits at socketsCable trays and boxes conduct moisture, causing sockets to discolour.
Measurement methods that we combine for certainty
- Thermography: Infrared images according to ISO 6781 show temperature gradients of damp masonry and leaking hot water pipes.
- Acoustic leak detection: Sensitive microphones and correlator localize flow noise in pipes through solid walls.
- Trace gas: Harmless hydrogen mixture seeps out through the leak and is detected by a sensor.
- Endoscopy: Compact camera inspects cavity, foils, and taping of seams around frame and anchors.
- Dye and smoke test: Fluorescein or smoke makes leakage trails in drains and connections visible.
Insurance, reporting and repair advice
We provide a clear dossier containing measurement data, photos, and conclusions that meets the requirements of building insurance and the intermediary. Thanks to our partnership with insurers, coverage guarantee, and no solution, no payment policy, you are in a strong position. We provide targeted repair advice with a priority list, such as replacing a compression joint, injecting mortar, or repairing waterproof membranes. If you would like more in-depth information on similar cases and approaches to interior walls, please view our section. leak in wallIn the event of signs of water loss in the pipeline network, we immediately recommend our approach for water pipe leak detection.
Why choose Ultrices leak detection
We operate nationwide, are usually at your doorstep within an hour in urgent cases, and work entirely without any demolition or breaking. Our success rate is ninety-nine percent, and you run zero risk thanks to our no cure no pay system. We are VCA VOL and NEN 3140 certified, work for both private and business clients, and score five out of five on Google reviews. You will receive a comprehensive expert report within three days with repair advice and assistance with your claim. For questions, call or WhatsApp 085 2505 217 or email info@Ultriceslekdetectie.nl. If you want to take immediate action and gain certainty, Request your free leak detection quote within 24 hours.
Frequently asked questions
What are clear signs of a leak in the wall and how do you test for this yourself?
If you see yellowish damp patches, mold edges, peeling plaster, or smell a musty odor, there is a good chance that a hidden pipe leak or penetrating damp is the cause. A suddenly higher water bill or loss of pressure in your central heating system can also indicate a leak. At Ultrices Leak Detection, we use quick checks to distinguish between condensation, facade leaks, and pipe leaks, so that you do not have to demolish things unnecessarily.
Test the water meter yourself: note the reading, close all taps, and check after a few hours. If the meter moves, this indicates a leak. Also, seal the suspected spot airtight with cling film. If there is moisture against the wall side after 24 hours, it is coming from the subsoil. If you are in doubt, let us measure with professional equipment or read more about targeted moisture measurement via moisture in interior wall caused by facade.
How do we locate a leak in the wall without demolition, and which techniques work best?
We start with a structural intake, moisture measurements, and thermography using a FLIR camera to visualize thermal bridges, wet zones, and pipes. Next, we apply acoustic leak detection using directional microphones and, if necessary, a correlator. For drains, we use a smoke test or UV dye. For supply lines, we use a hydrogen-nitrogen-based tracer gas that migrates through the wall via microfissures and can be safely detected.
All testing is non-destructive and carried out by VCA VOL and NEN 3140 certified specialists. You will receive an expert report with photos, measurements, and a clear repair plan. With our professional set of Tramex and Trotec meters and a 99 percent success rate, we almost always find the leak. If you would like the same for your cavity wall, take a look. cavity wall leak detection without chiseling.
What is the price of leak detection in a wall and how does it work through your insurance?
We work with a fixed investigation price per case and provide a free quote within twenty-four hours. No solution, no payment; no cure, no pay. Because we collaborate with insurers and only work without disruptive demolition, the threshold is low and consequential damage can be prevented. Our team delivers an expert report within three days, allowing you to take immediate action.
In many policies, leak detection falls under consequential damage. We help complete your file with a measurement report, photographic evidence, and confirmation of the cause so that your claim proceeds smoothly and your coverage is secured. We score five out of five in Google reviews and are available nationwide. For an example of reporting to the insurer, you can start at Bathroom leak insurance report.
How quickly will you be on site and what happens after locating the leak in the wall?
In emergencies, we are usually on-site within one hour, day and night, nationwide. During the visit, we locate the source, limit the damage, and immediately advise on emergency measures such as shutting off, drying, and temporary sealing. You will know on-site where things are going wrong and what the smartest sequence is for repairs with minimal disruption.
After detection, you will receive a complete expert report with clear photos, measurement data, and repair recommendations that your contractor or installer can carry out immediately. We offer a guarantee on coverage and remain available until the problem is demonstrably resolved. If you are currently dealing with a leak in an exterior wall or cavity, call on our emergency service for cavity walls in.