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The origin of Waterstop Solutions – from tunnels to your home

Waterstop Solutions leak sealing works in Clem7 tunnel in Brisbane

The origin of Waterstop Solutions – from tunnels to your home


The origin of Waterstop Solutions

– from tunnels to your home


Did you know that Waterstop Solutions was originally set up to service the construction of the Clem7 tunnel (The M7 Clem Jones Tunnel) in 2009 by Harold Du Toit?

Harold provided many design solutions and implementation strategies during the construction of the Clem 7 tunnel, including the waterproofing of redundant grout ports that were actively leaking in precast tunnel segments. Both our directors, Chris Anderson and Harold Du Toit, have in-depth knowledge and well-honed skills from their respectively 25+ and 30+ years long careers in the building and construction industry and within the construction product manufacturing industry. Chris and Harold regularly spend time out in the field mentoring our leak sealing technicians and have developed and deliver an in-house remedial repair training program to all our technicians. From tunnels to water infrastructure, industrial sites, heritage buildings, hospitals, commercial and residential buildings – we bring Waterstop Solutions’ major civil works experience to you!

Waterstop Solutions, which is a 100% Australian owned and privately operated family company, has since 2009 provided leak sealing injection expertise in Sydney and all Brisbane tunnels. In addition to leak sealing tunnels, we specialise in fixing leaking buildings and concrete structures and deliver our expertise to the residential, commercial, industrial and civil market. Our customised remedial waterproofing and concrete repair solutions preserve and protect your building(s) from water ingress and concrete deterioration.

A wealth 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 QLD and NSW.

Through their work at Waterstop Solutions, Harold and Chris have left their mark on countless signature projects across the Brisbane CBD, the Southeast region of Queensland, Sydney and the New South Wales Region.


The Waterstop Solutions’ team has completed over 8000 projects across Queensland and New South Wales.

Some of these projects include:

  • Sydney Harbour Bridge
  • Wivenhoe Dam
  • The Gabba
  • Taronga Zoo
  • Airport Link Tunnel
  • Gateway Duplication
  • Brisbane City tunnels
  • Clem 7 Tunnel
  • Legacy Way Tunnel
  • Tugan Desalination Plant
  • Wastewater Treatment Plants
  • Green Hill Reservoir
  • Parliament House
  • Steyne Hotel
  • Sydney Tunnel M5
  • Major hospitals and over 100 buildings across Sydney and Brisbane CBD.


The growth in demand for Waterstop Solutions expertise saw us opening a Sydney office in 2018.

We are undeniably proud to have Adrian Schokman on our team as Waterstop Solutions NSW Manager. With his extensive technical knowledge and excellent communication skills, he is leading our Sydney team of leak sealing and concrete repair specialists, providing diagnosis and remediation to waterproofing and concrete defect issues. Together, Adrian and his team, deliver successful, lasting and cost-effective solutions to our clients in New South Wales.

Adrian is a licenced builder and holds a degree in Environmental and Civil Engineering.  In 2023, he obtained the new NSW Registered Design and Building Practicioners Licence.  He has 25 years of experience in the building industry in Sydney, of which he has spent 19 years thriving in the remedial building sector. He distinguishes himself by demonstrating robust, in-depth expertise in building defect remediation, and he is known as a positive and courteous solution-focused person who displays integrity and an unyielding commitment to delivering excellent customer experience.



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.

Our industry-leading inspectors can identify maintenance weak spots and potential issues before they become big issues. We understand that each site has its own individual characteristics, so we tailor our service to accommodate the specific needs of each situation. Contact us today to make a booking.


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 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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