You see wet spots or the water pressure drops. You need a underfloor heating leak inspection. We at Ultrices Leak Detection find the leak quickly and without unnecessary damage.
We use thermography with a thermal imaging camera, acoustic detection, tracer gas, pressure testing, and moisture measurement. This allows us to find leaks in pipes at the manifold or under your tile, laminate, or poured floor.
In practice, you save time and repair costs. View our Google reviews 5 out of 5 via reviews about underfloor heating leak investigation and plan your research immediately.
Table of contents
What is a underfloor heating leak inspection?
Underfloor heating leak investigation is the specialized process by which we precisely locate invisible leaks in your underfloor heating pipes without any demolition or breaking work. At Ultrices Leak Detection, we combine building physics, thermography, and advanced measurement methods to trace the causes of leaks and limit consequential damage. We analyze water-based systems with PEX or PE RT pipes, manifolds with mixing controls, heat pumps or central heating boilers, expansion vessels, and pump controllers. We also assess electric underfloor heating and the influence of floor finishes such as tile, poured floors, PVC, parquet, or laminate. Our approach aligns with ISSO guidelines for heating installations, and we work in accordance with VCA VOL and NEN 3140 for safety and electrical checks.
How our underfloor heating leak inspection works step by step
- Assessment We discuss issues such as pressure loss, cold zones, damp spots, or a constantly refilled system, and analyze the year of construction, screed, and piping diagram of the manifold.
- Preliminary inspection We measure surface temperatures and humidity and check the expansion vessel, air vents, flow meters, and pump for deviations.
- Thermographic scan Using a high-quality infrared camera from, for example, FLIR or Testo, we visualize the pipe layout, heat leaks, and thermal bridges so that we can perform targeted testing.
- Pressure test and acoustics We set up an accurate pressure test with a manometer and data logging and use an acoustic correlator from, for example, Sewerin to locate micro-leaks.
- Tracer gas and endoscopy If necessary, we inject forming gas containing hydrogen and nitrogen and detect escape with a gas detector. We assess cavities or crawl spaces using a mini endoscope camera.
- Diagnosis and report Within three days, you will receive a comprehensive expert report including photothermograms, measurement data, and repair recommendations that insurers accept immediately.
Leak detection process request
Techniques and equipment for underfloor heating leaks
We combine techniques to give every type of underfloor heating leak investigation a 99 percent success rate. Thermography makes temperature anomalies visible and accelerates pinpoint location. Acoustic correlation listens for the characteristic leak sound in water-carrying pipes, even at low flow rates. Tracer gas is ideal for thick screeds or when the pipe layout is unclear. Moisture measurements using calcium carbide and capacitive meters distinguish rising damp from tap water. These methods work seamlessly together and prevent unnecessary demolition. If you want to delve deeper into the power of infrared imaging during investigations, read more via Infrared floor scan with thermography.
Causes, signs, and types of leaks in underfloor heating
- Recognizable signals Loss of pressure in the system, cold streaks in the floor, bulging laminate, white limescale around the manifold, and a suddenly higher water bill are typical indications.
- Common Causes Mechanical damage during drilling or anchoring, stress cracks due to thermal expansion, corrosion in steel couplings, and aging compression fittings in the manifold are common occurrences.
- Risk zones Transitions at bends, intersections near doorways, seams in the screed, and connections to the manifold are statistically the weak points.
- Consequential damage Loose tiles, softened PVC, mold growth, peeling skirting boards, and compromised insulation values due to wet insulation under the screed cause loss of comfort and costs.
- Water-based systems PEX or PE RT pipes in a snail or meandering pattern with groups on a mixing manifold, suitable for central heating boiler and heat pump. Leaks are easily detected acoustically and thermally.
- Electric underfloor heating Thin heating mats or cables under tiling. Localization is primarily performed using thermography and electrical measurement protocols in accordance with NEN 3140.
- Floor types and influence Anhydrite and sand cement conduct heat differently. Tiles show patterns quickly, while parquet and PVC have attenuation, making advanced thermography crucial.
- Couplings and fittings Leaks frequently occur at compression fittings, filling valves, automatic air vents, heat exchangers in the manifold, and with a defective expansion vessel.
Why Ultrices leak detection for underfloor heating leak investigation
We provide nationwide 24/7 service with an emergency option and are often at your doorstep within an hour. We work for private individuals, homeowners' associations, and businesses, are VCA VOL and NEN 3140 certified, and have over fifteen years of experience with a five-out-of-five-star rating. No solution, no payment; no cure, no pay, including a guarantee of coverage with insurers. Our professional detection equipment from FLIR, Trotec, and Sewerin, among others, and our methodical protocols ensure an accurate diagnosis without any demolition work. If you want to know exactly how we map and repair the leak source without demolition, view our approach via Trace leaks without hacking or breaking.
Practical example and measurement strategy
In a terraced house with a heat pump and mixing manifold, the system pressure dropped daily. During our underfloor heating leak investigation, we observed a cold strip running straight through the living room on the thermographic scan. The acoustic correlator confirmed an active leak at a bend. Using tracer gas, we detected the exact location between two joints. A single five-centimeter core drill sufficed for an endoscopy and inspection. The floor remained intact, and the repair remained localized thanks to precise marking. If you would like more insight into the process from localization to report, please view our working method at See how we detect leaks in underfloor heating..
Immediate help and transparent handling
You will receive a clear expert report with thermograms, pressure curves, and substantiated repair advice that insurers accept. If desired, we handle contact with your insurer and assist with drying techniques and planning. Call or WhatsApp 085 2505 217 or email info@Ultriceslekdetectie.nl for immediate assistance. Do you want to start the investigation quickly and gain insight into costs, Request your free quote within 24 hours and we will schedule your investigation. For a deeper dive into methods regarding hot and cold pattern recognition in pipelines, you can also view our page about Leak detection for underfloor heating from A to Z.
Frequently asked questions
How to recognize a leak in underfloor heating
Signs you will quickly recognize include recurring pressure loss in the boiler, more frequent refilling, an inexplicably warm or cold spot in the floor, damp patches, bulging laminate flooring, a musty smell, or mold along skirting boards. The manifold may also drip, or you may hear a hissing sound in the pipes while the thermostat is switched off.
Briefly check the pressure gauge yourself, run your hand over the floor for any abnormal zones, and look near the underfloor heating manifold for signs of corrosion or limescale deposits. If you see one or more of these symptoms, we will immediately schedule a targeted leak investigation without any demolition or breaking work.
How underfloor heating leak inspection works step by step
We start with an intake and analysis of your installation, distribution board, and circuit diagram. This is followed by a visual inspection, moisture measurements, and a phased pressure test per circuit. We map heat patterns using a FLIR thermal imaging camera to visualize the thermal trail of the leak, even with finishes such as tile or PVC flooring.
Next, we listen acoustically using geophones and apply hydrogen-nitrogen tracer gas to microcracks in PEX, PE RT, or multilayer tubing from brands such as Uponor, Wavin, or Rehau. If necessary, we use endoscopy. Everything is done non-destructively. In practice, we often find the source within a single visit. We work VCA VOL and NEN 3140 certified with a very high success rate.
How much does a underfloor heating leak inspection cost and how quickly do you get results?
The costs depend on factors such as floor finish, number of circuits, surface area, accessibility, and type of manifold. You will receive a free, customized quote from Ultrices Leak Detection within twenty-four hours. No solution, no payment; completely risk-free and available nationwide for both residential and business use.
If it is an emergency, we are often on-site within an hour. We usually establish the diagnosis within a few hours. Within three days, you will receive our comprehensive expert report including thermographic images, measurements, the cause, and repair recommendations. This allows you to liaise directly with the installer or insurer and prevent unnecessary consequential damage.
Is a underfloor heating leak covered by insurance and which report do you need?
In many cases, buildings insurance covers the detection and consequential damage caused by a leak in underfloor heating. Conditions vary by policy, but an independent and complete investigation file speeds up assessment and payout. We liaise quickly with your insurer and claims expert and ensure clear documentation.
The Ultrices leak detection report contains a test protocol, pressure test results, thermographic images, any tracer gas measurements, photo supporting documentation, exact localization, cause analysis, and a repair plan with a cost estimate. Our reports are widely accepted by insurers in the Netherlands and provide you with the substantiation needed for smooth claims handling.