/Our services

Wet
Crack Injection.

Water ingress through cracks, joints and defects can occur in both newly constructed and ageing concrete infrastructure, affecting asset performance, durability and ongoing operations. Direct Inject delivers specialist wet crack injection and water-stopping solutions to control active leakage, seal defects and restore watertightness, using injection systems selected to suit the structure, groundwater conditions and nature of the defect.

/Concrete Repair 03

Wet Crack Injection.

Direct Inject provides specialist injection systems to permanently seal active water-bearing cracks and leaking construction joints within underground and water-retaining concrete structures. On new-build structures, these works are often undertaken following hydrostatic testing, where leakage pathways are identified and require remediation before the structure can be commissioned.

Services

Leak Surveying & Mapping – Identification and mapping of active water ingress, including leaking cracks, joints and other water pathways. Defects can be classified and recorded against drawings, elevations or client-nominated digital platforms through to final close-out.
Injection System & Methodology Development – Assistance with material selection and injection methodology to suit project requirements and site conditions. Considerations include water flow, resin properties, reaction time, injection pressure, packer layout and sequencing.
Polyurethane Resin Injection – Pressure injection of hydrophobic or hydrophilic polyurethane resins through mechanical packers to seal active water ingress. Materials and reaction times can be selected to suit conditions ranging from minor seepage to significant groundwater inflows.
Acrylate Gel Injection – Injection of ultra-low-viscosity acrylate gels into fine cracks, joints and complex water pathways. Adjustable reaction times allow greater migration and penetration, making them suited to widespread or difficult groundwater ingress

Trusted material suppliers

Mc-Beuchemie
Normet Australia
Master Builder Solutions
Sika Australia
Fosroc

/ Why choose us

The Direct Inject Difference.

Expertise You Can Trust

When it comes to concrete defects, we’ve seen it all—and fixed it all. Direct Inject has been trusted on many of Australia’s most high-profile infrastructure projects, delivering reliable results under the toughest conditions.

Our team combines real-world experience with proven repair methods using only the most widely used and trusted chemical products in the industry.

Reliability & Efficiency

We complete every project on time and within budget. Our streamlined process and commitment to transparency ensure a stress-free experience from consultation to completion.

If it’s been done before, we’ve done it—and if it hasn’t, we’ll find the safest and most effective way to get it done.

Innovation & Quality

Using cutting-edge technology and premium materials, we ensure lasting solutions that stand the test of time. Our proven track record with tier 1 clients demonstrates our commitment to excellence.

/ Our Fleet

Machinery & Equipment Used.

POLYURETHANE, ACYLIC & GROUT PUMPS

A range of specialised injection and pumping equipment.

See All

/ What we’ve achieved

Concrete Remediation Projects.

/TESTIMONIALS

Trusted by
Industry Giants.

Our expertise in structural repair, water stopping and hydro-demolition solutions has earned the confidence of Australia’s most demanding projects and prestigious clients.

“Direct Injects reputation as experts at repairing leaks in underground structures is well deserved. I have worked with them on multiple tunnelling projects, and have consistently been impressed with their results”

Project Manager – Acciona, 2025

“I have worked with Direct Inject on multiple projects across Sydney. The expertise, quality and resources their team provides has always ensured successful project outcomes. Their crews embed themselves seamlessly into the project team and always strive to hit the aggressive targets we set them”

Project Engineer – Gamuda, 2025

“I worked with Direct Inject throughout the entire delivery phase of the Western Sydney Airport SBT project. Their team played a significant role in the project achieving most of its critical portion handovers and their willingness to really become an extension of our engineering team rather than just a labour hire contractor was refreshing.”

Area Manager – CPB Contractors, 2024

“I have utilised Direct Inject on two Major Projects in Sydney and in different capacities. Firstly, PU Injection and secondly robotic hydro demolition. What impresses me the most is their no fuss attitude and commitment to getting the right outcome for their Client. In both instances they have delivered and exceeded on what has been expected. I’ll certainly be engaging their services again”

Project Manager – John Holland, 2025

“JAGCON Group directly assisted the head contractor CPB Contractors & Ghella Joint Venture by seconding engineering and project management personnel directly into the JV team including myself in the capacity of Construction Manager………… What really set Direct Inject apart was their flexibility. When we needed them to scale up their workforce at short notice during critical construction phases, they made it happen. Equally importantly, they could scale down when required without complications.”

Operations Director – Jagcon, 2025

“Direct Injects reputation as experts at repairing leaks in underground structures is well deserved. I have worked with them on multiple tunnelling projects, and have consistently been impressed with their results”

Project Manager – Acciona, 2025

“I have worked with Direct Inject on multiple projects across Sydney. The expertise, quality and resources their team provides has always ensured successful project outcomes. Their crews embed themselves seamlessly into the project team and always strive to hit the aggressive targets we set them”

Project Engineer – Gamuda, 2025

“I worked with Direct Inject throughout the entire delivery phase of the Western Sydney Airport SBT project. Their team played a significant role in the project achieving most of its critical portion handovers and their willingness to really become an extension of our engineering team rather than just a labour hire contractor was refreshing.”

Area Manager – CPB Contractors, 2024

“I have utilised Direct Inject on two Major Projects in Sydney and in different capacities. Firstly, PU Injection and secondly robotic hydro demolition. What impresses me the most is their no fuss attitude and commitment to getting the right outcome for their Client. In both instances they have delivered and exceeded on what has been expected. I’ll certainly be engaging their services again”

Project Manager – John Holland, 2025

“JAGCON Group directly assisted the head contractor CPB Contractors & Ghella Joint Venture by seconding engineering and project management personnel directly into the JV team including myself in the capacity of Construction Manager………… What really set Direct Inject apart was their flexibility. When we needed them to scale up their workforce at short notice during critical construction phases, they made it happen. Equally importantly, they could scale down when required without complications.”

Operations Director – Jagcon, 2025

DO YOU REQUIRE OUR
SKILLS AND
EXPERTISE?

Call Us (02 7239 0808) Contact Us

/ other services

CONCRETE REPAIR

CONCRETE STRENGTHENING

CONCRETE REMOVAL

COMPLEX SOLUTIONS

Wet
Crack Injection.

Wet Crack Injection.