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Remedial waterproofing of damp garage wall and leaking floor/wall joints

Remedial waterproofing of garage walls - Leak sealing injections and WBE waterproofing system by Waterstop Solutions

Remedial waterproofing of damp garage wall and leaking floor/wall joints

Remedial waterproofing of garage – Leak sealing injections and WBE waterproofing system


The body corporate management of this site in the Sunshine Coast region recently engaged Waterstop Solutions for a remedial waterproofing solution. The garage was experiencing regular water ingress after substantial rain. Water was seeping in through the wall to floor joints and the back wall showed signs of dampness.  

To treat moisture ingress through the floor/wall joint that runs along the back wall and the garage, we recommended performing high-pressure leak sealing injections of hydrophilic polyurethane of the floor/wall joints.  

The injection system creates a three-dimensional waterproof seal inside the building element by injecting a high-quality hydrophilic polyurethane resin under high pressure. Once the leak sealing injections were completed, the injection ports were removed, and the holes and cracks were plugged with repair mortar. 

To treat the damp wall, we recommended grinding the existing paint off and installing a water-borne epoxy reverse side waterproofing system to the wall. 

As you can see in the video clip, there is quite a lot of water behind the retaining wall near the staircase. When drilling holes for the injection ports, there was a considerable amount of water running out of the wall, especially in the corner near the stairs. Our on-site leak sealing specialists utilised a few additional steps to the Waterstop Solutions proprietary process to form a watertight seal. 



Please note that in cases where the water-borne epoxy waterproofing system is installed to a concrete floor, we recommend installing a flooring system (i.e. tiles or carpet) to protect the moisture barrier. The reason is that the WBE moisture barrier is susceptible to damage from UV-light and abrasive damage caused by foot traffic and objects (such as furniture) being dragged across its surface.


Give us a call to discuss the best protective treatment application for your vertical and horizontal surfaces to help you choose the appropriate product and methods to protect them and how to best prepare the surface before installation for best performance.

If you have any issues with water ingress, rooftop leaks, leaking balcony, leaking basement, wet lift pit, cracking concrete slabs, structural cracks, concrete deterioration, spalling concrete, concrete cancer, deteriorated joints, moisture, seepage, efflorescence, rising damp and/or high-flow active leaks in concrete structures, we would be happy to assist you. You are welcome to contact us with any questions that you may have.

Waterstop Solutions teams are available for all your concrete repair and remedial waterproofing needs in Brisbane, Gold Coast, Sunshine Coast and Sydney.


Brisbane office: (07) 3205 1899   


Sydney office: (02) 9346 8308   

Email: [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 licensed 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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