Water ingress occurs when unwanted water enters a building or structure through areas such as cracks in concrete, failed waterproofing membranes, construction joints, roof areas, balconies, facades, basements or service penetrations. While the first sign may be a visible leak, water stain or damp area, the actual point of entry can be some distance away.
Water ingress can affect all types of properties and structures, from apartment complexes and commercial buildings to civil infrastructure and residential homes. Common signs include recurring leaks, damp walls or ceilings, mould, peeling or bubbling finishes, water staining and unexplained moisture. In larger buildings and structures, water ingress may also be discovered during routine maintenance, defect inspections or following deterioration of existing waterproofing systems.

Finding the source is important because repairing the area where water becomes visible may not resolve the underlying problem. Water can move through concrete, wall cavities, joints and other building elements before appearing elsewhere, making the cause difficult to identify without a thorough investigation.
Remseal provides water ingress investigations throughout Sydney for commercial property owners, strata and building managers, civil contractors and asset managers, as well as homeowners. Using on-site investigation, moisture detection and specialist testing methods, we work to determine where the water is entering, how it is travelling through the structure and what may be contributing to the issue.
With more than 43 years of experience in waterproofing and remedial services, Remseal has extensive practical knowledge of how and why water enters different types of buildings and structures. We provide water ingress investigations throughout Sydney for commercial property owners, strata and building managers, civil contractors and asset managers, as well as homeowners.
No two water ingress problems are exactly the same. A leak affecting an apartment building requires a different approach to water entering a basement, commercial facility or concrete civil structure.
Remseal works across a broad range of properties and projects throughout Sydney, tailoring each investigation to the structure, suspected source of water entry and the information the client needs.
Commercial Properties
We investigate water ingress affecting offices, warehouses, retail buildings, industrial facilities and other commercial properties. Our team can work with building owners, property managers, facility managers, contractors and consultants to identify the source of the issue and provide clear recommendations for remediation.
Strata & Apartment Buildings
Leaks in strata buildings can involve balconies, rooftops, façades, common areas, basements and individual lots. We help strata managers, owners corporations and building managers understand where the water is coming from, what is contributing to the problem and what action should be taken next.
Civil & Infrastructure
Water ingress can also affect concrete structures and civil assets. Remseal can investigate water movement associated with concrete cracking, construction joints, penetrations, below-ground structures and waterproofing systems, helping determine the cause before remedial works are planned.
Residential Properties
For homeowners, persistent leaks can be frustrating, particularly when previous repairs haven’t solved the problem. We investigate areas including balconies, rooftops, bathrooms, basements and external walls to find the source before further money is spent on repairs.
We have the tools to locate and identify the main cause, and with our extensive experience we provide the best waterproofing solution that lasts.
Identify the True Source
Prevent Further Damage
Avoid Unnecessary Repairs
Detect Hidden Moisture
Support Insurance & Strata Claims
Receive Expert Repair Advice
With more than 43 years of experience in waterproofing and remedial services, Remseal brings practical industry knowledge to every water ingress investigation.
Our team has experience investigating water ingress across commercial buildings, strata properties, civil structures and residential properties. We understand that water doesn’t always appear where it enters, which is why we assess the surrounding structure and waterproofing systems rather than focusing only on the visible damage.
By combining specialist testing equipment with decades of hands-on experience, we can provide clear findings and practical recommendations for the next stage of the project. If remedial works are required, Remseal can also take the project from investigation through to repair.
43 years of experience
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Remedial leak detection specialist
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