Cavity wall camera inspection by Ultrices Leak Detection provides you with quick clarity. We use an endoscope camera and thermography to examine insulation, cavity anchors, thermal bridges, and contamination, making heat loss and leaks visible.
If you see mold on interior walls or damp spots along window frames, we tackle the problem with moisture measurement, video analysis of the cavity, and repair advice. This way, you prevent hidden damage and unnecessary costs.
Choose cavity wall camera inspection with a clear report and fast turnaround time, and view our 5 out of 5 Google reviews via experiences with cavity wall camera inspection.
Table of contents
Cavity wall camera inspection: what it is and when to use it
Cavity wall camera inspection is an endoscopic examination of the space between the inner and outer leaves of your wall using a flexible inspection camera. We specifically look for signs of moisture, thermal bridges, contaminated or sagging insulation material, clogged open mortar joints, rusted cavity anchors, and defective lead flashing. The purpose of this page is to clarify what cavity wall camera inspection entails, how we perform it, and when this is the most reliable choice. If you see damp spots on interior walls, peeling paint, salt efflorescence on brickwork, or smell a musty odor after rain, an accurate cavity wall camera inspection is the fastest route to the cause. At Ultrices Leak Detection, we combine cavity wall camera inspection with building physics knowledge, such as NEN 2778 principles regarding moisture penetration and vapor diffusion, and practical guidelines from ISSO publications for facades and insulation.
How cavity wall camera inspection works in practice
We use a professional endoscope with LED lighting, a high-definition sensor, and a head that rotates in all directions. Brands such as Ridgid SeeSnake, Bosch GIC, and Wohler provide stable images with accurate locators so that we know exactly where we are looking. If thermal leaks are suspected, we combine infrared measurements from FLIR instruments with the camera image. This allows us to visualize capillary rise, thermal bridges around lintels and frame anchors, and wet insulation such as mineral wool, PUR foam, or EPS beads. The cavity is accessed via existing open weep holes or a miniature borehole, which we repair invisibly afterwards with matching jointing. Our approach aligns with principles of building physics such as convection currents, vapor transport, and the dew point, essential for preventing recurrence of damage. If you would like to read up on moisture behavior in the cavity and imaging via thermal imaging, our in-depth course is the right fit. Thermography of facade leakage Perfect for this subject.
Step-by-step our inspection process without demolition or breaking
- Intake and hypothesisYou describe the complaints, we analyze precipitation load, facade orientation, and year of construction, including cavity anchors and insulation type.
- Preliminary investigation: Visual inspection of jointing, frame seals, lead flashing, and open weep holes, supplemented with moisture measurements and thermography.
- Access and camera surveillanceWe insert the endoscope through open joints or a micro-borehole and inspect around lintels, expansion joints, base courses, and penetrations.
- Additional testsIf necessary, we use a fluorescein dye test or a light smoke test to follow leak paths.
- Report and adviceWithin three days, you will receive a detailed expert report with visual evidence, NEN and ISSO substantiation, and repair recommendations that insurers accept.
Leak detection process request
Typical causes of moisture in the cavity and visible signs
- Sagging or wet insulation: Due to water ingress or aging, mineral wool sags, a thermal bridge forms, and the cavity remains wet, signaling mold and odor.
- Defective lead flashing or sealant jointsWater runs into the cavity via the frame or masonry and manifests as streaks or wet edges under the frame.
- Clogged ventilation openingsSealed open weep holes or dirt block cavity ventilation, resulting in condensation and salt efflorescence.
- Corroded cavity wall tiesOld galvanized anchors can rust and form moisture bridges, resulting in cold spots on interior walls.
- Penetration of the facade during driving rain: Porosity of brick and joints leads to penetrating water with dark streaks after rain and peeling paint on the inside.
For in-depth information on the causes and repairs of wet insulation and dampness, you will find everything at moisture in cavity wall and our approach to cavity wall leak detection when immediate intervention is necessary.
Techniques and measurement methods that we combine for certainty
- High-resolution endoscopy: Direct view of insulation, anchors, base course, and mortar bridges to capture the primary cause with photos and video.
- Infrared analysisFLIR thermography shows thermal bridges and wet zones, ideal if it has recently rained or when there is a temperature difference between inside and outside.
- Dye test targetedUsing fluorescein, we follow active leak paths along jointing or window frames, clearly visible on camera without demolition.
- Moisture and salt measurementsCM and hygrometer measurements plus indicators for hygroscopic salts confirm the type of moisture damage and guide the repair plan.
- Cavity ventilation control: Inspection of open weep holes and water barriers to minimize capillary suction and stagnant air layers.
Examples from the field and results for insurance
In a 1970s terraced house in Rotterdam, a cavity wall camera inspection revealed wet glass wool beneath a leaking lead flashing above the window frame. After temporary sealing and repair of the flashing, the indoor climate recovered within weeks. In a detached house in Utrecht, the endoscope showed mortar bridges between the inner and outer leaf, forming direct moisture bridges. Our report, including photographic evidence and thermographic maps, led to swift acceptance by the insurer and full coverage. With every cavity wall camera inspection, you receive clear advice outlining priorities and repair options, including prevention tips on cavity ventilation and detailed finishing of lead and jointing.
Rates, lead time, and why Ultrices leak detection
Ultrices Leak Detection operates nationwide for private and business clients. We provide 24/7 service with an emergency response and are often on-site within an hour. Our success rate is ninety-nine percent, and no payment follows without a solution. We work in accordance with VCA VOL and NEN 3140 standards and use certified equipment. We score five out of five in Google reviews and, if desired, assist you with direct coordination with the insurer, including a guarantee of coverage provided policy conditions are met. Call or WhatsApp 085 2505 217 or email info@Ultriceslekdetectie.nl for immediate assistance. If you would like to use thermal imaging analysis in addition to cavity wall camera inspection to identify all risk zones, read on to learn more about our services. Infrared facade analysis for leakageReady for action and insight into your situation, Request a free quote now within 24 hours and schedule your inspection.
Frequently asked questions
What is cavity wall camera inspection and what problems does it detect?
With cavity wall camera inspection, we use an endoscopic cavity camera to look into the hollow space between the outer wall and the inner leaf. We insert an HD borescope with LED lighting through a small drill hole of approximately ten millimeters in the joint. This allows us to assess insulation such as EPS beads or mineral wool, the damp-proof course and lead flashing, cavity anchors, contamination, and potential thermal bridges without any demolition or breaking work.
You use this for damp spots, mold, musty odors, peeling plaster, or a facade that only leaks during rain. We visually document hairline cracks, clogged joints, and signs of leaks so that you know exactly what the cause is and what the repair options are. If you want to read more about musty odors and cavity damp, take a look. practical tips and cases.
How does a cavity wall camera inspection proceed step-by-step?
We start with an intake and a structural check of the facade. Next, we conduct targeted preliminary research using moisture measurement and FLIR thermography to detect thermal creep and damp zones. Subsequently, we drill a small inspection hole in the joint and perform an endoscopy using a professional RIDGID microcamera. Everything is carried out safely and certified according to VCA VOL and NEN 3140 standards.
During the inspection, we film and photograph cavity details, watercourses, and contamination. If necessary, we combine this with a targeted spray test or smoke test to validate the damp-proof course and weep holes. We provide a colorfast finish to the joint, deliver a comprehensive expert report within three days, and in urgent cases, we are often at your door nationwide within an hour. No demolition or breaking work, with a focus on a clear plan of action.
How much does a cavity wall camera inspection cost, and is it covered by your insurance?
The investment depends on accessibility, height, the number of inspection points, and any additional tests. As an indication, expect a price within the range seen for specialist leak detection. You will receive a free, customized quote within twenty-four hours. We operate on a no-solution, no-payment basis, and we have maintained a five-out-of-five rating for fifteen years.
Insurers often reimburse investigation costs for water damage, provided they are substantiated. Our expert report is tailored to the requirements of Dutch insurers and helps with rapid claim processing. Business and private clients benefit from our nationwide coverage and guaranteed coverage, depending on your policy conditions. Read how we report for facade leakage claims via facade leakage insurance report.
Does camera inspection work on an insulated cavity wall, and what if the insulation blocks the passage?
Yes, we can usually navigate past EPS beads, mineral wool, or flakes and visually assess the cavity. With infused PUR or heavily cemented insulation, passage is sometimes limited. In such cases, we intelligently switch to additional methods such as thermography, targeted spray tests, smoke tests, and precise moisture measurements to unequivocally establish the leak route.
This multi-method approach increases the chance of a watertight diagnosis to virtually certain, without extensive structural work. We neatly repair every inspection hole in the joint so that your facade remains aesthetically intact. If you would like us to trace your cavity wall leak without demolition, please take a look. our non-destructive approach with examples and results of Ultrices leak detection.