With roof leak detection, you find the source of moisture quickly. We at Ultrices Leak Detection quickly track down roof leaks on flat and pitched roofs with bitumen, EPDM, PVC, or roof tiles.
We inspect roofing seams, connections, chimneys, skylights, gutters, rainwater drains, and penetrations. Methods include the smoke test, tracer gas dye, and infrared thermography to ensure roof leak detection remains accurate and non-destructive.
You receive a clear report for insurance and smart repair advice so you save costs. Read how customers rate us Google reviews 5/5 in reviews about roof leak detection.
Table of contents
What is roof leak detection and when do you need it?
Roof leak detection is the targeted and non-destructive tracing of water infiltration in your roofing and connections. We combine building physics with measurement technology to find the precise source of roof leakage without demolition work. Think of capillary action along a chimney, moisture transport due to vapor pressure, or a micro-crack in EPDM or bitumen that only opens during driving rain. If you see damp stains on the ceiling or interior wall, blisters in your roof membrane, a musty smell around insulation, or sudden failure of your ceiling finish, then Roof Leak Detection is the fastest way to a proven solution.
Ultrices Leak Detection operates nationwide and is available 24 hours a day. We are on location within an hour with professional detection equipment, deliver an Expertise Report within three days, and work with insurers for quick settlement. No cure no pay and a guarantee of coverage make your choice one hundred percent risk-free.
How does professional roof leak detection work
We follow a structured protocol so that you receive clarity from the first sign to recovery advice.
- Intake and analysisWe link complaints to structural details such as roof parapets, penetrations, rainwater drainage connections, and the insulation structure of warm roofs, cold roofs, or inverted roofs.
- Visual and thermographic inspection: using an infrared camera with correct emissivity settings, we map thermal bridges, wet insulation, and leak paths, optionally with drone imagery for larger roofs.
- Targeted test methodDepending on the type of roof, we use a smoke test, dye test, tracer gas, or ultrasonic mist to unequivocally prove the source.
- Reporting and recovery planYou receive measurement values, photo thermograms, cause and effect, plus step-by-step repair advice so your roofer can get started immediately.
Leak detection process request
Techniques and tools for roof leak detection
- Thermography: infrared image shows temperature differences, making damp insulation and wet roof membranes visible, ideal for flat roofs with PIR or XPS insulation.
- Smoke test: controlled smoke under the roof membrane reveals seams, cracks, and imperfections at penetrations, skylights, and roof trims.
- Trace gas: we detect a hydrogen-nitrogen mixture with sensors for micro-leaks around solar panel terminals and rainwater drainage details with high accuracy.
- Dye test: harmless dye follows the water path on tiled roofs, valley gutters, and lead flashing around chimneys to the exact leak point.
- Acoustic and moisture measurementsContact microphones and capacitive moisture meters confirm the route from droplet to source and rule out hidden routes through capillary action.

Types of roofs and typical sources of leakage
- Flat roof with bitumen, EPDM, PVC or TPOSeams, details at roof penetrations, blistering due to vapor pressure, incorrect overlap, or outdated roof trims are common.
- Tiled roof: cracked tiles, aged ridge tiles, leaking valley gutters, porous mortar and poor connection to dormer or chimney lead.
- Green roofRoot penetration, clogged drains, and damaged root-resistant layers cause dormant water accumulation and wet insulation.
- Dormer and skylight: gaps in connection profiles, shrinkage in sealant joints, and defective collars around cable and ventilation penetrations.
If you want to have your roof leak objectively confirmed and located today, read on about Have a roof leak detected quickly by our certified team.
From finding to repair and insurance
- Expertise reportWithin three days, you will receive a report with measurement results, a photo attachment, the cause followed by consequential damage, and clear repair advice.
- Insurance linkageBecause our reports meet the requirements of claims departments, claim assessment is faster and offers a higher chance of coverage.
- Recovery guidanceWe coordinate our findings with your roofer or contractor so that the repair exactly interrupts the leak path and your roof structure is structurally sound.
- Aftercare and warrantyAfter repair, we can perform a verification scan to ensure you have a dry and efficient roof again.
If you work with flat roofs in Amsterdam, Rotterdam, Utrecht, Eindhoven, or Groningen, our approach is perfectly suited to Professionally detect flat roof leaks to be combined with minimal downtime of your business process.
Why Ultrices leak detection protects your roof
- Non-destructiveRoof leak detection without hacking or breaking, using professional equipment, gives you certainty and saves on repair costs.
- Certified and safe: only VCA VOL and NEN 3140 certified specialists with 15 years of experience and five out of five Google reviews.
- Fast and accurate: 24-hour service, on-site within an hour, 99 percent success rate and no cure no pay with guaranteed coverage.
- Business and privateFrom HOAs and property management to residential and non-residential properties, available nationwide with clear communication.
Curious how we locate leaks in complex penetrations or under solar panels? Then take a look at our approach for Leak detection without demolition or breaking with thermography, smoke, and tracer gas.
Common signs of a roof leak
- Damp stains and mold: circles on the ceiling, discoloration of plasterboard, and musty odors indicate penetrating roof moisture.
- Blowing and folding: Lifting of bitumen or PVC indicates trapped moisture or vapor pressure under the roofing membrane.
- Drip when passing through: Droplets around skylight, ventilation, or PV cables indicate a failing collar or sealant joint.
- Clogged drains: Standing water in rainwater drainage systems or valley gutters accelerates wear and increases the risk of leakage paths.
For emergencies, call or WhatsApp 085 2505 217 or email info@Ultriceslekdetectie.nl so we can schedule your roof leak detection today. If you want immediate certainty and a price agreement, Request your free roof leak detection quote within 24 hours and receive our plan of action with a clear timeline.
Frequently asked questions
How does roof leak detection without demolition work, and which method is right for your roof?
We detect roof leaks using non-destructive techniques that pinpoint exactly where water is entering. Examples include thermography with a FLIR thermal imaging camera, smoke test, dye tracing, ultrasonic and acoustic measurement, endoscopy, and hydrogen tracer gas. This allows us to inspect bitumen, EPDM, PVC, sedum roofs, and pitched tile roofs with equal care.
At Ultrices Leak Detection, we combine measurement data with building physics. We inspect details such as roof penetrations, skylights, dormers, valley gutters, chimney flashing, roof trim, and rainwater drains. Without any demolition work, with a 99 percent success rate and 15 years of practical experience. You will receive a clear expert report within three days and a free quote within 24 hours.
Which signs of a roof leak can you recognize early on a flat roof and a pitched roof?
Look out for damp spots or rings on ceilings and walls, droplets during rain, mold, or a musty odor. On flat roofs, you often see blisters in the bitumen, cracking, and puddles of water due to insufficient slope. On pitched roofs, discolored tiles, loose ridge tiles, or wet insulation indicate problems.
Check vulnerable connections around roof penetrations, skylights, chimneys, and roof windows. A clogged rainwater drain or leaking valley gutter also causes rainwater to enter. If you also notice stains on your ceiling, see how we investigate this with a report via detect ceiling leak including report.
How much does roof leak detection cost and is the inspection covered by your insurance?
The investment depends on roof type, accessibility, surface area, and required measurement methods. We help determine cost limits, work nationwide for private individuals and businesses, and provide a free quote within 24 hours. No solution, no payment with our no-cure, no-pay principle, and always professional detection equipment.
Your buildings insurance often covers the inspection if the leak is covered. We liaise with your insurer and provide a comprehensive expert report within three days, which is required for claims processing. If you would like to see how this process works for wet areas, view the process and report via bathroom leak report for insurance.
Is your roof leak urgent, how quickly can you come, and what is the chance of success without demolition work?
For emergencies, we are available 24/7 and are typically on-site within one hour, nationwide. Our specialists are VCA VOL and NEN 3140 certified and work without demolition or breaking. Using combined methods, we pinpoint the exact source with a 99 percent success rate and five-star service.
You receive immediate advice to limit subsequent damage and a complete expert report shortly thereafter. We assist you with the insurer, offer a guarantee on coverage of our investigation process, and you run no risk thanks to our no-cure, no-pay policy. Experience for yourself how we tackle rainwater penetration in facades via detect rain penetration on the facade.


