Facade leak detection helps you when damp spots, mold, and peeling paint appear after rain. We at Ultrices Leak Detection keep it simple and quickly find the leak without demolition.
We check facade leaks along cavity walls, masonry, jointing, window frames, sealant joints, lead flashing, and rainwater drainage. Using thermography, smoke test, dye test, endoscopy, water test, and moisture measurement, we identify the source and provide a clear plan.
This is how you tackle facade leak detection smartly, with clear costs and less damage. Read our Google reviews 5/5 in reviews about facade leak detection and choose certainty.
Table of contents
What is facade leak detection and why it matters
Facade leak detection involves the targeted tracing of water infiltration and moisture transport within your exterior facade without any demolition or breaking work. At Ultrices Leak Detection, we combine building physics and measurement techniques to determine exactly where rain penetration, capillary action, or defective connections are entering your building. We work according to the principles of NEN 2778 for damp-proofing in buildings and assess facade components against performance standards such as NEN EN 12865, and EN 1027 for facade openings. With knowledge of driving rain loads based on datasets from organizations like KNMI and building physics research from institutions such as TU Delft, we analyze your facade as a system. This provides you with certainty, a quick diagnosis, and clear repair advice backed by evidence.
How does facade leak detection work without breaking?
We combine visual inspection with instrumental measurements and test setups. Examples include thermography, cavity moisture measurements, and targeted water tests. Our specialists use professional equipment from brands such as FLIR for infrared imaging, Tramex and Trotec for moisture, and Ridgid and Leica Geosystems for camera inspections and tracing. We isolate causes step-by-step and document them with photos and measurement data. The result is an expert report that you receive within three days and that is suitable for insurers thanks to our VCA VOL and NEN 3140 certification.
- Facade leak detection definition: non-destructive techniques to expose moisture pathways in masonry, concrete, facade insulation, or cladding down to the detail level.
- Goal: limit damage, reduce downtime risk, and prevent unnecessary repair costs by repairing exactly where things go wrong.
- Application: residential, non-residential, monumental, and high-rise buildings in Amsterdam, Rotterdam, Utrecht, The Hague, and Eindhoven, among others.
- Benefit: no breaking open, measurement report with photos, no cure no pay, and 99 percent success rate.
Causes of facade leakage that we often see
Facade leakage has multiple sources that sometimes reinforce each other. Wind pressure and driving rain can draw water in through micro-cracks and poor seams. Thermal bridges and condensation can also obscure the picture; therefore, we separate external water from internal moisture sources using various methods.
- Sanded or cracked jointingOpen joints and voids accelerate water absorption and penetration through the facade via capillary action in brick or sand-lime brick.
- Connections around window frames: Outdated sealant, missing sealing layers, or faulty water barriers cause water ingress along stiles and sills.
- Lead flashing and water deflectors: incorrect slope or interrupted flashing leads water into the cavity, resulting in wet inner leaves and mold spots.
- Expansion joints and cracking: movement in masonry, lintels, and concrete elements opens continuous gaps, allowing rainwater to penetrate directly indoors.
- ETICS and facade insulationDamaged plaster layers, perforations, or incorrect detailing around fasteners create leakage paths behind the finish.
Our measurement methods and technology
We select the method that suits your facade type and symptoms. By combining techniques, we make the moisture path visible and demonstrably reproducible.
- Infrared thermography: visualizing cold zones and moisture accumulation with a FLIR camera, ideal for identifying the pattern and direction of leaks. Read more about the infrared facade scan step by step.
- Targeted water test: controlled load according to building physics protocols to activate leak points without damage. View our controlled water test method.
- Endoscopy in the cavity: with a compact camera, we inspect cavity contamination, thermal bridges, clogged open weep holes, and partitions.
- Moisture and salt measurements: with capacitive and resistance sensors, we distinguish rising damp, penetration, and condensation based on profile and salt balance.
- Tracer gas or dye: minimally invasive detection of micro leak paths along membranes, seams, and anchors for conclusive evidence.
Step-by-step plan for facade leak detection from intake to report
- Intake and triageYou share complaints, photos, and a sketch of the situation, and we determine the urgency and approach with an emergency option within an hour on-site.
- Building physics preliminary analysis: analysis of facade type, detailing, orientation, and recent weather conditions using data from KNMI, among others.
- On-site inspection: visual inspection, measurements, thermography, and test setups with professional detection equipment without demolition or breaking.
- Isolating the cause: phased water tests by detail to pinpoint the exact leakage source, including photolog and measured values.
- Recovery advice: concrete plan with materials, sequence, and quality control according to relevant NEN standards and best practices.
- Expert reportWithin three days, you will receive a complete report suitable for insurers, with a guarantee of coverage where applicable.
Leak detection process request
Practical examples and results
In a 1930s corner house in Utrecht, damp patches extended up to the ceiling in the living room. Using thermography, we observed cold streaks behind the plasterwork. A phased water test at the window frame connection immediately triggered the leakage. Repair consisted of renewing the sealing layer and detail foil. In an office building in Rotterdam, facade penetration via crumbling mortar joints proved to be the cause. After injecting and reprofiling the damp-proof course, all measured values remained dry during the final test.
- Time saving: on average a conclusive diagnosis within two hours with high evidence, allowing recovery to start quickly.
- Cost control: you prevent unnecessary facade maintenance because only the defective detail is addressed.
- Minimum nuisance: non-destructive approach, suitable for business and private use, available nationwide and 24 hours a day, 7 days a week.
- Assured: 5 out of 5 star rating, no cure no pay, and 99 percent success rate due to specialized methodology.
Costs, lead time and insurance
Facade leak detection with Ultrices Leak Detection is transparent and insurer-friendly. You receive clear rates in advance, we work with insurers, and deliver an expert report within three days. In emergency situations, we are often on-site within an hour. If you want to take immediate action, request your free price indication via receive a free customized quote within 24 hoursIf you would prefer to delve deeper into the techniques first, read how we test for rainwater penetration and facade penetration, or schedule an inspection for a water test and thermography. Call or WhatsApp 085 2505 217 or email info@Ultriceslekdetectie.nl for immediate advice.
If you want to dive deeper into the subject of test methods, start with our explanation of the infrared facade scan or see how we with a waterproof test to demonstrate facade leakage with reproducible results.
Frequently asked questions
How do you recognize a facade leak and what are the most common causes?
You often recognize facade leakage by damp patches on interior walls, mold, peeling paint, salt efflorescence, a musty smell in the cavity wall, or cold spots around window frames. Common culprits include cracks in masonry and joints, open weep holes, aged or incorrectly installed lead flashing, leaking sealant joints, a defective water barrier, contamination or bridging in the cavity, and weak connections at window frames and facade penetrations.
We identify the source through building physics analysis using moisture measurements, thermography, and targeted testing. This allows us to distinguish between penetrating damp, rain penetration, and condensation caused by thermal bridges or an incorrect dew point. If you want to delve deeper into penetrating damp and what you can do now, take a look. Our explanation regarding penetrating damp in the facade.
How does facade leak detection work without demolition?
We begin with a baseline measurement and visual inspection of facade masonry, window frames, expansion joints, and detail connections. Subsequently, we combine moisture measurements, thermography with a thermal imaging camera, endoscopy through existing openings, a smoke test in the cavity, and, where necessary, a controlled spray test in accordance with standard building physics protocols such as NEN 2778. If appropriate, we use dye tests with a UV lamp to trace water trails.
As a VCA VOL and NEN 3140 certified team, we work non-destructively using professional detection equipment. You will receive a comprehensive expert report within three days, including photos, measurements, and repair recommendations. No solution, no payment, thanks to our no cure no pay policy. Our success rate is high, and we work nationwide for both private individuals and businesses.
My facade only leaks when it rains; what should I do now and how soon can you come?
Rain-related leaks often indicate weak points at weep holes, window frame connections, lead flashing, or a broken damp-proof course. We simulate controlled precipitation with a spray test and combine this with light-pressure smoke in the cavity, thermography, and real-time moisture logging. This allows us to show exactly where rainwater is penetrating and whether capillary action is the culprit.
For emergencies, we schedule immediately and are usually on site within an hour, day and night. We work without demolition and provide quick clarity with repair advice. If you would like to know in advance what we do in the event of rain damage, please read our step-by-step plan at facade that only leaks when it rainsWe are Ultrices Leak Detection, with over fifteen years of experience and excellent reviews.
How much does leak detection on a facade cost, and does insurance cover the inspection?
The investment depends on the facade type, height and accessibility, the number of test surfaces, and required measurement methods such as thermography, smoke test, and spray test. You will receive a no-obligation quote within one day, and we work risk-free on a no cure no pay basis. Upon completion, you will receive clear repair advice that allows you to prevent targeted costs.
Many buildings insurance policies cover leak detection and consequential damage, depending on your policy. We provide a comprehensive report that is insurance-suitable and, if desired, coordinate with your claims handler. If you want to know exactly what is in the report, please view our page about report for insurance against facade leakageThis way, we speed up your claim processing and you avoid disputes.