High-Rise Leak Detection & Water Leak Investigation Sydney
ACE Abseiling provides high-rise leak detection in Sydney using rope access, so our technicians can trace leaks back to their true source on the facade, balcony or roofline, rather than guessing from internal symptoms alone. Leaks in high-rise buildings are hard to trace because water can enter at one point and travel a long way before it appears as a stain or damp patch inside a unit.
Water follows the path of least resistance once it gets behind a facade or under a membrane. A stain on a ceiling might actually originate several floors up, or metres away from where it appears, which is common with building leaks from wind-driven rain. Common entry points include:
Our Leak Detection Process
1. Internal assessment review
We look at where water is appearing inside the building to narrow down likely external zones.
2. External rope access inspection
Technicians access the facade directly above and around the affected area, checking joints, cladding and render.
3. Testing
Where needed, we use controlled water testing to recreate and confirm the leak path.
4. Source confirmation
Once the true entry point is identified, we document it with photos before any repair work begins.
5. Repair and sealing
Confirmed leak points are sealed using our caulking and sealing service, or repaired as part of a broader repairs and maintenance scope.
Why Rope Access Is Better Than Guesswork Repairs
Many buildings waste money resealing the wrong area because the leak source was assumed rather than confirmed. Rope access allows our technicians to physically inspect every joint, panel and surface near the suspected zone, at close range, rather than relying on binoculars or drone footage from a distance. This means repairs target the actual cause, not just the visible symptom.
What the leak investigation report includes
A leak investigation is only useful if the next person can act on it. After inspection and testing you receive a written report with:
- The leak history and the areas inspected inside and outside
- Each tested detail marked by elevation, level and drop
- Photos of every detail tested, with the duration and result of each test
- The confirmed or likely entry point, with close-up photos of the defect
- Recommended repairs, and anything that needs another trade or a consultant
See how a test day runs in our guide to façade water testing.
Leak repairs we carry out by rope access
- Window and joint sealant: failed sealant cut out, joints prepared and resealed. See caulking and sealant replacement.
- Cracks and concrete: cracked render, spalling and concrete cancer repaired before more water reaches the reinforcement.
- Flashings: missing or damaged flashings installed or repaired at window heads, parapets and junctions.
- Façade coatings: protective coatings where the surface itself is letting water in, as part of a rope access painting scope.
- Retesting: after the repair, the same detail is tested again to confirm the leak has stopped.
Where the cause is a failed balcony or roof membrane, or a defect inside the window frame, we document it so the right trade or consultant can be engaged.
Signs it is time for a leak investigation
- Water stains or damp around window heads, sills or reveals on upper floors
- Leaks that only appear in storms or with wind from one direction
- A leak that has come back after a previous repair
- Bubbling paint, efflorescence or rust staining on the façade near the leak
- A disagreement between owners, strata and a builder about where the water is coming from
Water leak investigation for strata and commercial buildings
A water leak investigation finds where water is getting in before anything is repaired. On a high-rise building that usually means reviewing the inside of the affected unit, inspecting the façade, windows and balconies above it by rope access, then water testing one section at a time while someone checks inside. The photo report shows the likely entry point and the repair needed, so the strata committee or building manager pays for the right fix. Common repairs that follow are sealant replacement and building remedial works and façade repairs, which we can carry out from the same access setup.
Who we work with on leaks
Strata managers and owners corporations dealing with a recurring leak into a unit, building and facility managers of commercial buildings, and builders or remedial contractors who need the façade side of a leak tested and repaired at height. A test-by-test report gives everyone the same evidence before money is spent on repairs.
Ace Abseiling holds NSW Contractor Licence 465770C (Decorator, Painter) and $20 million public liability insurance, and every job is supervised at IRATA Level 3. Call 1300 926 176 or request a leak investigation.
FAQs
1. How do you find a leak if it is not visible from outside?
We combine internal damage location, close-up rope access inspection and, where necessary, water testing to trace the path water is taking before it appears inside the building.
2. Can a leak be fixed without knowing the exact source?
It can be attempted, but repairs based on guesswork often fail because the actual entry point is missed. Confirming the true source before repairing saves money in the long run.
3. How long does leak detection take on a high-rise building?
Straightforward cases can be resolved within a day. More complex leaks that require testing across multiple areas may take longer. We will give you a clear estimate after the initial assessment.
4. Is leak detection covered by strata insurance?
This depends on your policy and whether the leak affects common property. Your strata manager or insurer can confirm coverage once the source and cause are documented.
5. Do you also carry out the repair after finding the leak?
Yes. Once the source is confirmed, we can carry out sealing, caulking or facade repair work in the same rope access mobilisation, saving on repeat setup costs.
Water testing on site
During a water test, a technician wets the façade from outside while someone inside watches for where water appears. It helps narrow down the entry point before any repair is quoted. A thermal camera is also used to look for damp areas behind walls and ceilings that are not yet visible, which shows where testing should start. For balconies, see our guide to balcony leaks in apartments.
IRATA Level 3Rope access work led by an IRATA Level 3 technician
SWMS for every jobSafe work method statement prepared before work starts
A$20M public liabilityCertificates available on request
Sydney since 2021Strata, commercial and builder projects across Sydney
Get a Free Quote Today
Speak with Ace about tracing and fixing leaks on your building. Our team is ready to discuss your project and offer expert advice on how we can meet your needs.
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Leak after heavy rain? Read about leaking flashings on apartment buildings.