Drips near your dormer. We at Ultrices Leak Detection are your dormer leak specialist. We quickly find the source so your house stays dry.
We inspect bitumen or EPDM roofing, window frames, side panels, fascia boards, lead flashing, sealant joints, and gutters. Using a smoke test, dye test, thermal scan, moisture measurement, and endoscopy camera, we make the cause visible and substantiated.
You get emergency repair and maintenance service plus a clear report for your insurance with a warranty. For trust, Google reviews 5 out of 5, read our reviews about our dormer leak specialist.
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Dormer leak specialist who really solves it
At Ultrices Leak Detection, you have come to the right place for a dormer leak specialist who finds the cause quickly, accurately, and without any demolition work. We combine thermography, smoke testing, dye analysis, endoscopy, and tracer gas to locate every leak in your dormer. We operate nationwide, are available for urgent assistance, and deliver a comprehensive expert report to your insurer within three days. Thanks to professional detection equipment from FLIR for infrared imaging and Tramex for moisture measurement, among others, we achieve a very high success rate. No solution, no payment, and completely risk-free. Call or WhatsApp 085 2505 217 or email info@Ultriceslekdetectie.nl. If you want to have a targeted investigation carried out immediately, choose our service. detect dormer leaks and prevent consequential damage to insulation, plasterboard, and window frames.
What a dormer leak specialist does
We distinguish between genuine water infiltration and condensation and ventilation problems. We analyze connection details of roof tiles on the dormer, the waterproofing with lead or a lead substitute such as Ubbink Ubiflex, the roofing on the flat section such as EPDM or bitumen, the valley gutter, fascia boards, side panels, and the frame profiles, such as those used with Velux. We safely simulate rain and wind loads and document everything in measurement reports with photos, thermal maps, and clear repair recommendations. Thanks to our collaboration with insurers and our proven methodology, you quickly gain certainty regarding coverage and repairs.
Main causes of dormer leakage
- Lead flashing and water barrier: aged lead or incorrectly installed lead substitute allows water to penetrate by capillary along the facade or tiled roof.
- Seams and sealant jointsShrinkage and aging of sealant around window frames and fascia boards cause fine cracks through which driving rain seeps in.
- Flat section roofing: EPDM or bitumen with folds, blisters, or poor base joints causes leakage around upstands and penetrations.
- Side walls and plating: Delamination of wooden or plastic panels and incorrect overlap direction introduce moisture behind the cladding.
- Rainwater drainage: a clogged rainwater drain or a valley gutter that is too small causes flooding and backflow under roof tiles and on the sides.
Signs and symptoms you recognize
- Circles and discoloration: brown edges on the ceiling or sides of the dormer indicate prolonged moisture exposure.
- Cold and draft: wet insulation loses its effectiveness, causing it to feel noticeably colder inside.
- Mold and musty smell: stagnant moisture behind paneling causes mold spots and odors.
- Drops in heavy rain: especially during wind from the prevailing direction, droplets appear at window frame corners or ceiling seams.
How our leak-free detection works
We combine multiple techniques so that your dormer leak becomes visible at a detailed level, even if the source is located in a different place than the damage. If you want to have an inspection done without causing any damage, read more about leak detection without heels and save on repairs afterwards.
- Infrared thermography: thermal images show cold streaks caused by evaporation and moisture traces behind cladding and insulation.
- Moisture measurement and mappingContact and dielectric measurements make the progression of moisture visible in wood, plaster, and plastic.
- Tracer gas and smoke test: invisible gaps and non-airtight seams are quickly identified with controlled simulation.
- Dye and endoscopy: water test with harmless dye followed by a camera inspection shows the exact inflow line.
Our research process step by step
- Intake and damage analysisYou describe symptoms, and we link this to precipitation patterns and wind direction according to KNMI data.
- Visual inspection: we assess connection details of tiles, valley gutters, lead, roofing, and window frame profiles, both outside and inside.
- Measurement plan and measurementsWe make targeted use of thermography, moisture measurement, smoke tests, dyes, and optionally tracer gas.
- Controlled water testWe simulate heavy rain on sub-surfaces to confirm the source without causing damage.
- Expert report and adviceYou will receive a substantiated report within three days, including a photo report, source location, and restoration plan.
Leak detection process request
Types of dormers and specific risks
- Wooden dormer window: working seams in fascia boards and peeling paintwork create open capillary gaps.
- Plastic dormer window: shrinkage cracks in frame profiles and aged sealant cause infiltration along screw holes.
- Polyester shell: hairline cracks in the shell or at connections with roof tiles lead to invisible inflow.
- Zinc claddingSoldered joints and water barriers at upstands require perfect detailing to remain leak-free.
- Flat roof on dormer: Bitumen or EPDM with poor base details around the upstand and penetration is a common source of leaks.
Insurance, warranty, and fast assistance throughout the Netherlands
We work with insurers, provide a comprehensive expert report, and assist you with coverage questions. Our dormer leak specialist is often on-site within an hour for emergencies. We are VCA VOL and NEN 3140 certified, assist both private and business clients, and offer a guarantee on the coverage quality of our report. Our clients rate us five out of five stars, and we have over fifteen years of experience with a very high success rate. If you would also like to have other roofs checked, please schedule additional services. detect roof leaks so that your entire roof surface definitely stays dry.
Have your dormer made watertight again with substantiated advice.
You will receive a clear step-by-step plan for repairs using materials such as EPDM, bitumen, or lead substitute where appropriate, including priorities and a cost estimate. We coordinate this with your contractor or roofer to ensure the repair is done correctly the first time. Ready to save specifically on damage repairs and avoid disputes with the insurer? Request a quote now. Free quote for dormer leak detection within 24 hours turn on and take the first step towards a permanently watertight dormer.
Frequently asked questions
How do you recognize a leak in your dormer and what are the most common causes?
You often notice it by damp patches around the dormer ceiling, drips near the frame, a musty smell, peeling paint, or discolored fascia boards. Usually, it is caused by worn sealant joints, dried-out frame seals, a leaking lead flashing, loose roof trim, cracks in bitumen or EPDM, or a clogged rainwater drain causing water to back up.
We primarily see complaints related to rain and wind direction on the side walls and under the roof tiles around the dormer. Ultrices Leak Detection is available 24 hours a day and works without any demolition or breaking. Tip for further information regarding rainwater penetration at connections: Read how we tackle rainwater penetration around the facade and dormer..
How does a dormer leak specialist locate the leak without demolition work?
We combine thermography, smoke tests, dye tests, endoscopy, ultrasound, and precise moisture measurements. This allows us to map the connections of lead flashing, roof trim, fascia boards, EPDM or bitumen roofing, window profiles, and rainwater drainage. With a controlled spray test, we simulate rain to make seepage along cracks and seams visible.
Our investigation is entirely non-destructive, VCA VOL and NEN 3140 certified, and delivers an expert report with photos and remedial advice within three days. We work nationwide for private individuals and businesses, with a 99 percent success rate. Curious about our water testing method in practice? View the explanation on the Spray test for facade leakage.
How much does an inspection for a dormer leak cost, and is it covered by your insurance?
The costs depend on accessibility, roof type, and required measurement methods. You will receive a free quote within 24 hours, and following the inspection, a comprehensive expert report within three days. No solution means no payment. Our team has 15 years of experience and uses professional detection equipment, without any demolition or breaking work.
Insurers often cover leaks under the buildings policy in the event of sudden water damage. Coverage varies by policy and cause, which is why we coordinate directly with your insurer and provide a report that is ready for a claim. Read what an insurance report looks like for similar claims: Example of an insurance report.
My dormer leaks during heavy rain; what should I do now and how quickly can you get there?
First, limit the damage: place buckets, put towels near the window frame, and photograph the traces. Call us immediately. Our emergency service is available 24 hours a day, and we are often on-site within an hour. On-site, we stabilize the situation and conduct targeted leak testing to find the exact source.
We install temporary emergency sealing where necessary and provide a clear repair plan with priorities and a cost estimate. Thanks to our partnership with insurers and our 5 out of 5 rating on Google, you can count on quick processing, expert advice, and a no cure no pay policy. This way, you keep both the damage and your peace of mind under control.