5 Best Water Leak Detection Services in Singapore (2026)
Looking for water leak detection in Singapore? five firms using thermal, acoustic or moisture tools to trace ceiling and pipe leaks before any hacking.
- Edited by
- Amir Wahab
- Published
- Reading time
- 4 min read
AI image by LocalRankA stain on the ceiling rarely shows where the water starts. In Singapore flats and condos, the source is often a concealed pipe or a failed membrane in the unit above, and hacking at random is how a small leak becomes a renovation. Detection firms try to answer one question first: where exactly is the water coming from? This list covers five providers that describe thermal imaging, acoustic or ultrasonic listening, or moisture mapping on their own websites. Several also repair what they find, others mainly diagnose, so read each entry for the scope it describes, then ask for a written findings report before agreeing to any opening-up works.
1. Hydroworks Waterproofing & Maintenance
Hydroworks gives leak detection its own service page, and its approach is stated plainly: locate the true source before anything is opened. The page says technicians map moisture across the affected area, then bring in thermal imaging, pressure testing and acoustic tools to narrow the leak down. It lists homes such as HDB flats, condominiums and landed houses, plus commercial premises including condo common areas. Once the source is found, the firm says it repairs with the least disruption it can, and its wider menu covers ceiling leaks, bathrooms, balconies and roofs. The site advertises a free assessment and a round-the-clock emergency line, which makes it a sensible first call when a leak is active and the cause is unclear.
Ang Mo Kio
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2. Le Fong Building Services
Le Fong's thermal-imaging page pitches an infra-red camera scan for homeowners who suspect seepage and want it confirmed before spending on repairs. It says its consultants look for water coming from the roof, ceiling, walls, pipes or ground water, and that it can recommend a course of action on the day of the inspection, with a written seepage report available on request. The page singles out new-home owners and anyone needing a detailed report. Beyond detection, the company handles roofing, waterproofing, concrete repair and rope-access work, which suits buildings where the leak may start outside the unit. Its site lists opening hours of 9am to 6pm every day and welcomes residential, commercial and industrial enquiries.
Serangoon North
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3. Roof Doctors
Roof Doctors is a roofing and waterproofing contractor whose ceiling-leak page spends real time on diagnosis. It says it traces leaks from concealed supply or waste pipes in the slab above using non-invasive detection technology, and that it relies on thermal scanning and moisture-mapping to find the origin before any repair begins. The page explains that a ceiling stain is often caused by a buried pipe, a worn waterproofing layer, seepage from the unit above or rain entering from the roof, and says equipment such as thermal cameras and moisture meters is needed to tell these apart. It names HDB flats, condominiums and commercial properties, and says quotations follow an on-site inspection.
4. Allstar Waterproofing and Services
Allstar Waterproofing publishes a detailed explainer on how a leakage specialist finds hidden sources, which gives a useful picture of the process before you call. Its article, dated March 2026, describes thermal imaging and ultrasonic detection as tools it uses, and the wider site refers to moisture meters and pressure checks as well. The company says it works on HDB flats, condominiums, cluster houses, bungalows and commercial buildings. Detection sits alongside ceiling leakage repair, roof waterproofing, concrete repair and wet-area work, so the same team can carry on to treatment once the cause is identified. It states that it has more than twenty years behind it, a claim best confirmed with references during your enquiry.
5. Active Plumbing Singapore
Active Plumbing is a plumbing company that has built a dedicated leak-detection page around three techniques: acoustic listening devices, thermal imaging and pressure testing. The page says hidden water loss can cause structural damage, mould and higher utility bills, and that its plumbers aim to locate the leak accurately before work starts. It covers homes, including HDB flats and private residences, and commercial buildings. Because it is a full plumbing outfit, the same team also lists pipe replacement, drainage clearance, tap and toilet repairs and water heater installation, and advertises round-the-clock availability. That makes it a practical pick when the suspected cause is a pipe rather than a waterproofing failure in a wet area or roof.
How to choose
- Ask which detection method will be used and why it fits your symptom. Thermal imaging suits damp walls and ceilings, acoustic or ultrasonic listening suits pressurised pipes, and moisture mapping helps in wet areas. A firm that explains its reasoning in plain terms is usually more reliable than one that names equipment only.
- Decide whether you want diagnosis only or diagnosis plus repair. Detection specialists can give an independent findings report, while contractors that also repair may move straight to treatment. Either route can work, but knowing which you are buying helps you compare quotations fairly and avoids paying twice for the same inspection.
- Request a written report with photos or thermal images that marks the suspected source. A report is useful for talking to a neighbour, the management corporation, a landlord or an insurer. Check what it will include before booking, and whether the visit fee is separate from any repair work that follows.
- Check who owns the problem before committing. A ceiling stain may start in the unit above, a common pipe or the roof, and each route involves different people. Several providers mention reports for management or insurance purposes, so ask how they would document an inter-unit or common-property leak.
- Confirm scope, access and disruption before the visit. Ask whether the test needs water shut off, whether any opening-up is planned, and how the firm limits damage if it must open a surface. Get the quotation and any warranty terms in writing, and avoid paying for repairs until the source is documented.
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Founder and Editor
Amir Wahab is the founder and editor of LocalRank, an independent Singapore rankings and local guides publication.
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