Waterproofing can be best described as the process of making a structure or object waterproof or water resistant so that it remains unaffected by water penetration or absorption...
Waterproofing is particularly important in buildings, homes, indeed anywhere that water should not penetrate through to cause any damage, places that include:
Common types of waterproofing services include:

One of the most common frustrations property owners face is spending thousands of dollars on waterproofing repairs only to experience the same leak months or years later.
In many cases, the waterproofing membrane itself is not the primary cause of failure. Water ingress can result from:
Without accurately identifying the root cause, many repairs only address the visible symptoms rather than the source of the problem.
At Remseal, we believe successful waterproofing begins with understanding why the leak occurred in the first place.
Unlike many waterproofing contractors who simply recommend membrane replacement, Remseal adopts a diagnostic-led approach to every project.
Before recommending any waterproofing solution, our specialists investigate the source of water ingress using industry-leading testing and inspection methods.
This process allows us to determine:
This methodology helps eliminate guesswork and ensures our clients receive practical, evidence-based recommendations.
Remseal specialises in the investigation of complex waterproofing failures throughout Sydney.
Our testing and diagnostic capabilities may include:
Moisture Investigation
Determining the extent of moisture migration through walls, floors, ceilings and structural elements.
Flood Testing
Testing waterproofed areas under controlled conditions to identify leakage points and assess membrane performance.
Thermal Imaging
Using advanced technology to identify concealed moisture and hidden leak pathways.
Crack and Joint Assessment
Investigating movement joints, construction joints and structural cracking that may be contributing to water ingress.
Basement and Retaining Wall Analysis
Assessing groundwater pressure, subsoil drainage and waterproofing performance in below-ground structures.
Through comprehensive investigations, we are able to identify the underlying causes of waterproofing failure before recommending repairs.
Every building is different.
Following our investigation process, Remseal provides clients with multiple repair options where appropriate.
Depending on the findings, solutions may include:
Our goal is to provide the most effective and economical solution for the building rather than recommending unnecessary works.
With more than 43 years of waterproofing and remediation experience, Remseal provides waterproofing services across a wide range of sectors, including residential homes, strata buildings, commercial developments and civil infrastructure projects.
Our experience extends to:
Many waterproofing contractors install membranes.
Remseal investigates, diagnoses and resolves waterproofing failures.
Our unique combination of leak detection expertise, waterproofing knowledge and remedial construction experience allows us to identify the true cause of water ingress and provide long-term waterproofing solutions.
When you engage Remseal, you are not simply hiring a waterproofing contractor—you are engaging a team of waterproofing investigation and remediation specialists committed to protecting your property for years to come.
We have the tools to locate and identify the main cause, and with our extensive experience we provide the best waterproofing solution that lasts.
Reduces erosion & damage
Suppresses algae growth
Extends lifetime of asset
Improves structural integrity of properties








Remseal are vastly experienced in all types of waterproofing, considered as Sydney’s waterproofing specialists, the team provides a full end-to-end service, assessing each project on its own needs, finding the best solution that will provide the most lasting results. All Remseal staff members carry the extensive training that will assist all customers to receive the best results.
Contact REMSEAL for all Waterproofing needs, questions, quotes, or advice.
43 years of experience
New building
Remedial leak detection specialist
Detect and repair
Latest forensic equipment
Quality material & finish
Leak warranty & guarantee
