Underfloor heating leak detection helps you with pressure loss, damp spots, and malfunctions. We at Ultrices Leak Detection find the leak quickly and without any demolition, so your floor remains intact, just like that spot that keeps coming back.
We check pipes, couplings, and the manifold at the boiler or heat pump using thermography, acoustics, tracer gas, and pressure testing.
You want to know where the water is coming from; we provide a report with photos, costs, and repair advice. Choose underfloor heating leak detection with five out of five Google reviews and read our Google reviews about underfloor heating leak detection.
Table of contents
Underfloor heating leak detection explained
Underfloor heating leak detection involves specifically locating a leak in a water-based underfloor heating system without unnecessary demolition. We locate the leak in your floor circuit using thermography, acoustic analysis, pressure tests, and tracer gas. This protects your floor finish and subfloor while providing quick clarity regarding the cause, location, and repair options. At Ultrices Leak Detection, we combine practical knowledge with professional equipment from FLIR and Trotec, among others, tailored to PEXa or multilayer pipes and manifolds from brands such as Wavin, Uponor, Rehau, Giacomini, and Danfoss, with circulation pumps from Grundfos and controls from Honeywell Home. Our team is VCA VOL and NEN 3140 certified and delivers an expert report that insurers understand and accept.
How does underfloor heating leak detection work in practice
We analyze heat patterns, pressure loss, and sound signatures to locate the exact rupture or porosity in the pipe. Heat transfer via conduction, convection, and radiation forms the basis of a thermographic scan, while an acoustic correlator detects minuscule leak sounds in screed or anhydrite. In case of doubt, we use a hydrogen-nitrogen tracer gas mixture with a highly sensitive sensor to pinpoint the leak down to the tile level. We do all this without any demolition or breaking and with a 99 percent success rate.
- Thermography: thermal images show anomalous delta T patterns and cold plumes due to escaping water and evaporative cooling
- Acoustic detection: a geophone and correlator listening to characteristic leakage sounds that occur with pressure difference
- Pressure test: an accurate manometer and data logger confirm volume flow loss and stability per circuit
- Trace gas: a safe hydrogen-nitrogen combination migrates to the surface and is detected by a sensor
- Endoscopy and fluid measurement: inspection via joints or skirting board with an endoscope and moisture mapping for impact analysis

Signs of leakage in underfloor heating
If you recognize a musty odor or a warm spot that keeps recurring, prompt action is needed. Prevent damage to the screed, sand cement, or wooden subfloor and save on repairs.
- Unexplained loss of pressure: the pressure on the underfloor heating manifold drops or you have to keep refilling
- Wet or warm zones: localized damp stains, mold formation, or a permanently warm band in the floor
- Boiler or heat pump malfunctions: error code due to low pressure level or air ingress in the circuit
- High water bill: an increase in consumption without extra tap water usage often indicates a hidden pipe leak
- Laminate or parquet performancebulging or discoloration caused by rising damp from the floor
Our process for leak detection without breaking
We work in a structured manner and report clearly, so that your installer or contractor can carry out targeted repairs and your insurer can handle the matter quickly.
- Intake and system scan: we note symptoms, brand and type of distributor, and floor structure, including finish such as tiles or PVC
- Isolate per circuit: per group, we test pressure and temperature to select the suspected loop
- Non-destructive measurements: thermography, acoustics, and moisture measurement determine the focus area with accurate coordinates
- Tracer gas or additional test: for deep surface layers or wet construction systems, we refine the pinpoint location
- Expert report: within three days you will receive a report with cause location photos, advice, and prevention tips
Leak detection process request
Methods and technology for various floor constructions
Different constructions require different protocols. Our methodology scales with dry-construction boards, wet-construction screeds, and floating floors.
- Wet construction sand cement or anhydrite: strong thermal mass means clear patterns on infrared with validation via acoustics
- Dry construction with heat distribution plates: faster response requires fine-meshed thermal sampling and low supply temperatures
- Wood or laminate: moisture mapping and relative humidity monitoring show rising damp and capillary propagation
- Tiles or natural stone: tracer gas is ideal for dense finishes where sound detection is dampened
Causes and practical examples that we see daily
Leaks often originate from drilling or screw damage during kitchen or wall installation, corrosion in old steel pipes, stress cracks in PEXa bends, or a leaking coupling in the manifold. In apartments, we regularly see leaks at expansion joints. In detached houses with a heat pump, air ingress after maintenance triggers a pressure drop that exposes an existing weak spot. We document every case with clear images and measurements so that repairs can remain targeted and brief. If you would like more in-depth information on smart leak detection without demolition, please view our approach in leak detection without heels and see how to save your floor finish.
Costs, insurance and guarantees
You benefit from a no-solution, no-payment policy, clear fixed price agreements, and a guarantee on report coverage. We operate nationwide, are on-site within an hour in emergencies, and provide service to both businesses and private individuals. With 15 years of experience, professional detection equipment, and a five-star rating, we ensure smooth claims handling. Insurers appreciate our comprehensive expert report featuring measurements, thermographic images, and clear repair advice, including risk analysis and prevention tips. If you want to know immediately what it costs to have your circuit inspected and minimize repair time, read how we underfloor heating leak detection and which steps to limit your damage.
Immediate help with pressure loss or wet spots
We are available for emergencies and scheduled inspections, day and night. Call or WhatsApp 085 2505 217 or email info@Ultriceslekdetectie.nl for advice and scheduling. Do you want quick action and a clear price, Free quote within 24 hours for underfloor heating leak inspection We'll take care of it immediately. For broader water damage, we also provide targeted assistance with detect water leaks in the house so that the full extent of the moisture damage is mapped out for repair.
Ultrices leak detection stands for 24/7 service, emergency service, collaboration with insurers, no demolition or breaking work, professional equipment, guaranteed coverage, and choosing 100% risk-free thanks to no-cure-no-pay.
Frequently asked questions
What are clear signs of a leak in underfloor heating?
Watch out for pressure loss in the central heating system, more frequent refilling, wet or discolored grout, a musty smell, mold growth, or warm and unusually cold spots on the floor. If you hear a hissing or ticking sound at the manifold, or if your water bill rises without explanation, that is also a red flag. Briefly turn off the pump and check if the water meter continues to run to confirm that there is consumption somewhere.
We isolate the suspected circuit by closing groups alternately and combine this with thermography and acoustics to pinpoint the exact leak without any demolition or breaking. If acute water damage is visible towards the bathroom or ceiling, call in our rapid assistance immediately via our bathroom leak emergency service for direct limitation of consequential damage.
How does leak detection in underfloor heating work without demolition?
We start at the manifold with a baseline measurement of pressure and flow rate and scan the floor with a thermal imaging thermography camera to find anomalous patterns. Using electro-acoustic microphones and a correlator, we listen for micro-leaks, even under tiles or cast floors. If necessary, we perform a safe tracer gas test with a mixture of hydrogen and nitrogen and follow the gas with sensors right down to the exact tile.
Our specialists are VCA VOL and NEN 3140 certified, available nationwide, and usually on-site within an hour. You will receive a comprehensive expert report within three days, including thermograms, measurements, cause, and repair recommendations. If you would like to see how thermography works in wet areas, please take a look. our thermographic bathroom leak detection for extra background.
What does underfloor heating leak detection cost and how quickly can you respond?
The investment depends on the floor finish, accessibility of the manifold, number of groups, and any urgency. You will receive a free quote within twenty-four hours, and in urgent cases, we are usually on-site within an hour. Thanks to professional detection equipment and fifteen years of experience, we achieve a very high success rate in practice, and our no-solution, no-payment model works completely risk-free for you.
Ultrices Leak Detection delivers without any demolition work, with a guarantee of coverage and a five-star rating in Google reviews. We work for private individuals and businesses and coordinate the process with your installer or repair partner. Where applicable, we coordinate the investigation plan with your insurer in advance so that you are not faced with any surprises.
Is a leak in underfloor heating insured, and what does your report state?
Many policies cover detection costs and consequential damage; the exact coverage varies by insurer and policy conditions. We work with insurers on a daily basis and provide an expert report that typically meets their requirements. The report includes the cause and source location with a photolog, thermographic images, measurement protocols, a map of the pipe layout, a risk analysis, and concrete repair advice, including prevention tips for the future.
With this file, you can quickly arrange authorization for repair and limitation of consequential damage. If you additionally require an insurance-specific document for a bathroom-related incident, please ask. our bathroom leak insurance report so that your claim proceeds smoothly through the claims handler. We will keep you fully informed and remain available until the file is closed.


