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Leaky retaining wall – leak sealed and waterproofed

Leaky wall - water ingress through wall to floor joint - leak sealing by Waterstop Solutions

Leaky retaining wall – leak sealed and waterproofed


This leaking below grade wall was treated by one of our leak sealing specialists while both he and our client carefully followed the detailed government guidelines of health, hygiene and social distancing practices for risk prevention. This was particularly important because our client is in the vulnerable group regarding COVID-10 and needs to stay clear of any potential risks of contracting the virus.

When Waterstop Solutions inspected the area, it was identified that water was seeping through the floor to wall joint and the back and side walls of the garage.

Reverse side remedial waterproofing was completed to the back and side walls by intersecting the wall to floor joint and injecting hydrophilic polyurethane under high pressure. The polyurethane reacts with any water present in the joint and binds with the surrounding concrete creating a flexible and watertight seal.

After allowing the PU to react, the injection ports were removed and the injection sites plugged. Some holes and gaps in the mortar lines were filled followed by installing a water-borne epoxy reverse side waterproofing system to the walls.

Water was leaking through the wall to floor joint and the back and side walls of the garage.



Everyone at Waterstop Solutions has been given detailed instructions on how to follow the Government guidelines of health, hygiene and social distancing practices to help prevent contracting and spreading the COVID-19 virus.


If you have any questions about any upcoming works, please feel free to contact our offices in Brisbane and Sydney.

Brisbane: 07 3205 1899
E: [email protected]

Sydney: 02 9346 8308
E: [email protected]


Are you interested in finding out more about the various remedial building services we are providing?

Please click on the image below to download Waterstop Solutions Capability Statement

Waterstop Solutions Capability Statement

Waterstop Solutions Capability Statement is now available to download as PDF. (The image is clickable and opens up a link to our Capability Statement). 




Good maintenance begins with a proactive approach to maintain, keep, preserve and protect a building. 

Remember that seepage/water ingress into areas such as balconies, basements, concrete roofs, car parks and retaining walls, should not be ignored – call a remedial waterproofing professional today for an assessment to provide you with the best solution for your situation.

At Waterstop Solutions, we carry out a wide range of remedial works to concrete structures post-construction stage in Brisbane, Gold Coast, Sunshine Coast, Sydney and outlying areas in Queensland and New South Wales.

Equipped with major civil works experience, we can quickly determine the best approach to rectify all seepage and concrete deterioration issues.


It takes licenced remedial waterproofer and leak sealing experts like us at Waterstop Solutions to ensure that the pathways for water to ingress are properly sealed off. A depth of technical knowledge and experience, along with a proud reputation for integrity and reliability, has made Waterstop Solutions the go-to company for many Defect Managers working for major construction companies across Queensland and New South Wales.

We at Waterstop Solutions have the technical and practical expertise to diagnose the source of the leak and will provide you with our recommended solution to achieving an effective, high-quality, long-lasting repair to stop the water ingress with minimal disruption

We believe in and are committed to always delivering high-quality solutions by utilising the right products and techniques for each specific project combined with our industry-leading know-how on tap. We have a large talent pool of specialist leak sealing and concrete repair technicians with Certificate III in construction waterproofing in Queensland and New South Wales that are extensively trained in our systems and project execution methods.

The leadership positions on every Waterstop Solutions project are operated by highly qualified, certified and experienced industry professionals. Our in-house skills and expertise gained from more than 60 years of industry experience provide a full range of high-quality remedial waterproofing and concrete repair works to commercial buildings, civil infrastructures, industrial sites and residential properties. From waterproofing diagnostics, preventative and remediation solutions – All of our waterproofing solutions are quality guaranteed.


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