Do you see damp spots at home? We find the source with roof leak detection. We analyze traces and insulation so that you stop the damage and peace returns.
For roof leak detection, we use thermography, smoke test, tracer gas, dye, and moisture measurement. Flat and pitched roofs: bitumen, EPDM, PVC, roof tiles, zinc. Gutters, skylights, chimneys, dormers, lead flashing.
We are Ultrices Leak Detection and provide a clear report for insurance and repairs. Read how customers rate us with Google reviews 5 out of 5 in experiences with roof leak detection.
Table of contents
What is roof leak detection and why it makes a difference
Roof leak detection is the targeted and non-destructive tracing of the exact cause and location of a leak in your roof structure. Instead of guessing where water is entering, we combine measurements, simulations, and visual analysis to arrive at a conclusive diagnosis. This prevents unnecessary demolition, saves you time and costs, and protects insulation, structure, and finishes against hidden moisture damage. At Ultrices Leak Detection, we work nationwide for private and business clients and provide an independent expert report that you can submit directly to your insurer.
How roof leak detection works with advanced techniques
We use professional detection equipment and recognized methods applied worldwide in building physics and maintenance inspections. Examples include thermography with FLIR cameras, moisture measurement with Tramex and Protimeter, smoke tests, dye tracers, endoscopy, and electric field inspection (also known as EFVM), inspired by international guidelines such as ASTM D7877. Each technique reveals a different piece of the puzzle, allowing us to distinguish between water trails, condensation, and capillary action.
- ThermographyThermal images show thermal bridges, wet insulation, and hidden moisture under bitumen, EPDM, or PVC roofing membranes, with visual evidence.
- Moisture and salt measurement: non-destructive measurement of moisture percentages in roof structure and ceiling finish to confirm active leak zones.
- Smoke and dye test: controlled overpressure with smoke or water with tracer staining to test seams, penetrations, and details for leakage.
- Electrical leak detection EFVM: low-voltage measurement on membranes to locate micro-perforations and tears accurate to within decimeters.
- Endoscopy and acousticsVisual inspection in hollow spaces and listening for dripping sounds to distinguish between penetration and condensation.
Step-by-step plan for roof leak detection without demolition or breaking
- Intake and analysisWe collect your complaints, photos, year of construction, roof type, and recent weather conditions with KNMI context for a targeted plan.
- Visual roof inspection: inspection of roof covering, roof trim, skylight, dormer, chimney, and rainwater drainage with attention to detailed connections.
- Instrumental measurements: thermography, moisture measurements and, if necessary, EFVM, smoke or tracer water to objectively establish the leak path.
- Simulate causeWe simulate rain and wind pressure to prove repeatability and causality according to practical test protocols.
- Diagnosis and advice: clear conclusion with source location, damage pattern, repair options, and priority, including photos and measurements.
- Report and aftercareYou will receive a comprehensive expert report within three days; we will coordinate with your insurer and service provider if desired.
Leak detection process request
Types of roofs and common causes of leakage
Every roof extension requires a targeted approach. We identify patterns that help you act decisively and reduce future risk.
- Flat roofsBitumen, PVC, and EPDM roofs face problems with seams that shrink, perforations around solar panels, and clogged drains that cause water accumulation.
- Sloping roofsTile roofs and slate roofs often leak at ridge tiles, valley gutters, skylights, and lead flashing around a chimney or dormer.
- Green roofsRoot penetration, poor drainage, and a damaged root-repellent membrane can cause invisible leakage in the sublayer.
- Metal roofsZinc and steel are subject to expansion and corrosion, especially at details and joints where thermal expansion is greatest.
Signs of a roof leak and risk to your home
Recognize the signs early and prevent secondary damage to the structure and installations. Our roof leak detection separates rain penetration, condensation, and actual water intrusion to prevent misdiagnoses.
- Circles and discoloration: brown edges in ceilings or walls and peeling plaster indicate persistent moisture exposure.
- Musty smell and mold: microbial growth in wet insulation or plasterboard is a health and comfort risk.
- Drops or flashing lights: water near recessed spotlights or cable ducts increases the risk of a short circuit.
- Rising energy costsWet insulation loses its effectiveness, meaning you heat more for the same level of comfort.
Costs, insurance and our expert report
With roof leak detection, you save on unnecessary repair hours by prioritizing targeted repairs. We provide a report including the source location, photos, measurements, and repair recommendations that align with manufacturer guidelines such as Sika Sarnafil and Firestone RubberGard. Thanks to our partnership with insurers and our independent reporting, you increase the likelihood of a smooth claims settlement. We are VCA VOL and NEN 3140 certified, work safely at height, and offer a "no solution, no payment" guarantee on our detection service with a 99 percent success rate. Call or WhatsApp 085 2505 217 or email info@Ultriceslekdetectie.nl for immediate support or to be on-site within an hour in case of an emergency.
If you want to know how targeted testing on your roof works, read on about more about targeted roof leak detection or discover our approach for Leak detection without demolition or breakingReady to take action, Receive a free proposal for roof leak detection within 24 hours. and prevent unnecessary consequential damage.
Why choose Ultrices leak detection for roof leaks
We combine roofing technology, building physics, and high-quality equipment from brands such as FLIR, Protimeter, and Tramex. You benefit from fifteen years of experience, nationwide coverage, service day and night, a clear expert report within three days, and an approach without disruptive demolition work. We collaborate with contractors, property managers, and insurers, delivering measurable results that you can use immediately for repairs and claims. For ceiling damage caused by roof leaks, we connect with our specialists to ensure your leakage chain is seamless and your repairs start quickly. If you would like to delve deeper into ceiling damage caused by water seeping through the roof, please also read about smartly detect ceiling damage.
Frequently asked questions
How does roof leak detection work on flat and pitched roofs?
We start with an intake and a structural inspection, followed by accurate moisture measurements. Depending on your roofing material, we use infrared thermography with FLIR for bitumen and EPDM, a smoke test along seams and roof penetrations, UV dye for skylights and dormers, tracer gas for micro-leaks, and endoscopy for chimneys, valleys, and guttering. A targeted spray test validates the cause. Everything is done non-destructively, so without any hacking or breaking.
Ultrices Leak Detection operates nationwide and is often on-site within 1 hour. With over 15 years of experience, VCA VOL and NEN 3140 certification, and professional detection equipment, we achieve a 99 percent success rate. You will receive a comprehensive expert report within 3 days, including photos, thermograms, and repair recommendations. No solution, no payment, and 100 percent risk-free.
How much does roof leak detection cost and is it covered by your insurance?
The costs depend on the roof type, accessibility, height, and required inspection methods. Examples include thermography, smoke tests, tracer gas, and spray tests. We work with clear, fixed rates per inspection and discuss any surcharges in advance. You will receive a free quote within 24 hours, and we will schedule our emergency service quickly if necessary. The no cure no pay policy remains in effect.
Damage caused by a roof leak is often covered by your buildings insurance, provided the policy conditions are met. We deliver a complete expert report within 3 days that claims handlers and NIVRE experts can work with effectively. We liaise smoothly with insurers and substantiate cause and effect. See what such a report looks like via practical example of an insurance report.
What are the most common causes of a roof leak and how to recognize them quickly?
Common causes include shrinkage and cracks in bitumen or EPDM, open seams, leaking roof penetrations, poor roof trim, torn lead flashing around the chimney, a weak valley gutter, an aging zinc gutter, or a clogged rainwater drain. On tiled roofs, we often see broken or shifted tiles and worn ridge tiles. Signs include brown circles, mold, a musty odor, peeling plaster, and damp insulation.
Tip for a quick check when rain is entering around a skylight, dormer, or chimney: this often indicates a local seam or connection. Call in our emergency service for immediate localization without demolition. We ensure safety according to NEN 3140 for wet electrical systems and document findings for your insurer. Troubled by stains on the ceiling? View ceiling stains examined and documented.
Which leak detection method is best suited for your bitumen or EPDM flat roof or tiled roof?
On flat roofs with bitumen or EPDM, infrared thermography quickly reveals wet insulation and thermal bridges. A smoke test shows leaks along overlaps and roof details, and tracer gas finds micro-leaks that would otherwise remain invisible. UV dye works excellently for skylights and dormers. On tiled roofs, we combine endoscopy at the chimney and lead flashing with a targeted spray test on the valley gutter, ridge, and tile stack.
We select methods based on building physics and wind and water loads so that the cause is irrefutably established. You receive measurement values, images, and clear, prioritized repair advice per location. Also discover how we exclude moisture penetrating through the facade with rain penetration inspection of the facadeYou will receive a free quote within 24 hours and we will schedule immediately.