Detect leaks behind walls with us. We at Ultrices Leak Detection locate leaks quickly using thermography, acoustic detection, tracer gas, endoscopy, moisture measurement, and camera inspection, without any demolition or breaking.
We locate the source in the water pipes, central heating, and drains, and check joints, sealant seams, and crawl space. Damp spots, peeling plaster, and musty odors become clear.
You receive pipe detection, a pressure test, a photo report, and repair advice for insurance and damage mitigation. We have 5 out of 5 Google reviews; read our reviews about detecting a leak behind a wall.
Table of contents
What is detecting a leak behind a wall?
Detecting a leak behind a wall means we precisely locate a hidden water leak in or behind your interior or exterior wall without unnecessary demolition work. At Ultrices Leak Detection, we combine building physics such as capillary action, dew point, and vapor pressure with smart measurement methods. This allows us to determine whether you are dealing with a leaking water pipe, a sweating coupling, penetrating damp from the facade, condensation in the cavity wall, or infiltration through seams around window frames. Our goal is a clear diagnosis, an accurate source location, and practical repair advice that you can immediately put into practice.
Signs and causes of leakage behind the wall
Invisible wall leaks often reveal themselves through clear patterns. Recognize the signs and understand the possible causes.
- Damp spots or discoloration: irregular circles, peeling plaster, or mold growth that is slowly expanding, often around pipe runs or thermal bridges
- Bulging or soft plasterwork: weakened plaster layers, hollow-sounding masonry or salt efflorescence due to capillary absorption
- High water bill or pressure loss: continuous refilling of the central heating system or visible loss on the water meter when at standstill
- Musty smell and increased humidity: abnormal measurements with a thermohygrometer, especially at external corners and cavity zones
- Leaking water pipe or coupling: cracks caused by stress, corrosion, or installation errors in cold or hot water pipes and central heating pipes
- Penetrating damp through the facade or jointing: rain penetration through micro-cracks, porous brick or failing cavity sealing
- Infiltration along window frame or sealant joint: poorly adhering sealant, defective waterproofing or open seam in mounting frames
- Condensation and dew point problems: thermal bridge behind the wall causing water to condense and damage the material
Our measurement methods without breaking
We combine multiple techniques for a conclusive result, tailored to your home or business premises. These include thermography with a FLIR infrared camera, moisture measurements with Trotec and Protimeter instruments, an acoustic leak detector, and endoscopy with an inspection camera. If necessary, we use tracer gas with a hydrogen-nitrogen mixture or perform a dye test with fluorescein. This allows us to find the source quickly and cleanly, with a 99 percent success rate.
- Thermography: thermal images reveal anomalous temperature patterns around damp masonry, pipes, and cavity anchors
- Acoustics and correlation: a geophone and correlator pick up micro-sounds from leaks, useful for pressure pipes
- Tracer gas detection: harmless gas migrates through the leak and is precisely located by sensors
- Endoscopy and fluid profiles: a small camera in the cavity or behind the panel shows water trails and weakened spots
In many cases, a targeted approach with minimal openings and immediate repair advice helps. If you want to see how we carry this out without demolition, please visit our page. leak detection without heels for examples and methods.
Step-by-step plan for leak detection behind the wall
- Intake and triageYou share symptoms, photos, and year of manufacture so that we can form the correct hypothesis and choose equipment.
- Zero measurement: we measure moisture, temperature, and relative humidity and check the pressure on the water pipes and central heating
- Targeted measurements: combination of thermography, acoustics, endoscopy and, if necessary, tracer gas or dye
- Source location and delimitation: we mark the exact location, determine the watercourse, and quantify the damage zone
- Recovery advice and reportYou will receive an Expertise report within three days with photos, measurement data, and repair advice.
Leak detection process request
Types of wall leakage and specific approach
Every situation requires a different strategy. This is how we tackle the most important types.
- Water pipe leak in the wall: acoustic detection and tracer gas confirm the crack, then precisely open and targeted repair
- Cavity wall and facade penetration: facade water test, thermography and endoscopy of the cavity, followed by repair of jointing or damp-proof course
- Around the frame and inner leaf: dye and smoke test show the entry route, finish with durable sealant and correct drip edges
- Condensation and thermal bridge: building physics analysis, ventilation and insulation advice to move the dew point outside the wall structure
If you want more in-depth information about damp walls and hidden pipes, read our explanation at leak in wall and see how we solve similar cases with measurement data and photos.
Insurance, report and guarantees
As a VCA VOL and NEN 3140 certified team, we provide an Expertise Report accepted by insurers, including measurement results, cause identification, and a repair plan. We work nationwide for private individuals and businesses, offering 24-hour service and emergency support. No solution, no payment, according to our no-cure, no-pay principle. With 15 years of experience, 5 out of 5 stars on Google reviews, and professional detection equipment, you are in a strong position regarding claims handling. We guarantee coverage for our leak detection services and ensure you receive clarity quickly.
Direct assistance and regional coverage
We arrive on-site within 1 hour for emergencies in the Randstad and quickly in the rest of the Netherlands. Call or WhatsApp 085 2505 217 or email info@Ultriceslekdetectie.nl for immediate triage. If it concerns possible water pipe damage or a sudden drainage failure, we schedule an investigation the same day, often without any demolition work and with great success. If you want to know exactly where you stand immediately, request your free quote within 24 hours so that we schedule the leak behind your wall today.
Frequently asked questions
How do you locate a leak behind the wall without hacking and breaking?
We combine non-destructive techniques that confirm each other. With infrared thermography, for example using a FLIR thermal imaging camera, we visualize thermal bridges and water trails. With acoustic correlation and ultrasound, we listen for micro-sound from a pipe leak. Hydrogen tracer gas detects even tiny perforations, while accurate moisture measurements and dye testing show exactly where water is migrating in the plasterwork or cavity.
Our approach is step-by-step and measurement-driven. We start with a baseline measurement and systematically exclude water pipes and drains using pressure tests and flow control. This allows you to locate the source down to tile level, without unnecessary demolition. You receive a clear expert report that insurers accept, including measurements, photos, and conclusions. At Ultrices leak detection, the policy is no solution, no payment, and we achieve a 99 percent success rate.
What are clear signs of a hidden leak behind the wall?
Watch out for damp patches that are growing, dark edges, blisters or powdery salts on the plasterwork, mold growth, peeling paint or laminate, and a persistent musty odor. A suddenly higher water bill or a water meter that keeps running while all taps are closed often indicates a pipe leak. With hot pipes, you can sometimes feel localized heat through the wall.
Test quickly by turning everything off and checking if the water meter's control wheel continues to move. Take photos for your insurance and call us immediately. We arrive on-site quickly nationwide and work safely in accordance with VCA VOL and NEN 3140. If you want to specifically rule out a bathroom-related pipe leak, then view Detect a hidden pipe leak in the bathroom without demolition.
How much does it cost to detect a leak behind a wall, and does insurance cover the inspection?
The investment depends on the source pipes (facade or cavity), accessibility, and required measurement methods. We work with a fixed price after a brief intake, and you will receive a free quote within 24 hours. Our measurements are performed without any demolition or breaking and fall under our "no solution, no payment" policy. We serve both private individuals and businesses.
Home and buildings insurers often reimburse leak detection when the underlying leak or consequential damage is covered. We provide a comprehensive expert report with measurement documentation and photos within 3 days to ensure your claim runs smoothly, and we assist with the settlement with your insurer. To learn more about reporting for claims, see leak detection report for bathroom damage insurance.
How quickly should you act on a wall stain caused by a leak, and what can you do immediately?
Act immediately to limit consequential damage and mold. Turn off the main valve if you suspect a pipe leak, switch off the power near wet wall sockets, catch drips, and ventilate. Document the damage with photos for your insurance. Call us for emergencies; we operate nationwide and are often on-site within 1 hour with professional measuring equipment.
On-site, we perform targeted moisture measurements, conduct a thermographic scan, perform an acoustic listening test, and, if necessary, a pressure and dye test. This allows us to locate the source quickly and safely in accordance with NEN 3140 protocols and limit demolition to zero. If you are in a hurry regarding penetrating damp or cavity water, contact us. our emergency leak detection for cavity and interior walls .