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Re-Injectable
Hoses.

Re-injectable hose systems provide a targeted means of sealing construction joints, structural interfaces and localised water ingress within concrete structures. Installed during construction as a secondary or contingency sealing system, the hoses remain accessible for injection if leakage or damp areas develop during construction or later in the asset’s service life. Direct Inject provides specialist injection of both newly installed and existing hose systems across underground structures, water-retaining assets and other critical concrete infrastructure.
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Re-injectable hoses.

Re-injectable hoses are typically incorporated into one of two waterproofing arrangements. In membrane-lined structures, hoses are fixed to the membrane at nominated construction joints or compartment boundaries before concrete or shotcrete is placed over them. In water-retaining structures, hoses can be cast directly into the centre of construction joints, often as an additional barrier between layers of hydrophilic waterstop.

While injection of a known leaking joint can be relatively straightforward, locating and treating water ingress within a membrane-lined structure can be more complex. Water may travel between the membrane and concrete before becoming visible internally, meaning the point of leakage does not necessarily identify the original water path. Direct Inject reviews construction records, waterproofing details and hose layouts to develop a systematic injection sequence that progressively compartmentalises and treats the affected area. Product selection and reaction time are carefully controlled to achieve sufficient travel and permeation while avoiding premature blockage of the hose and, where the system permits, maintaining its ability to be flushed and re-injected.

Typical Applications
  1. Membrane-Lined Underground Structures – Injection of hose systems incorporated at construction joints and compartment boundaries within membrane waterproofing systems. Typical structures include basement car parks, station boxes, shafts, tunnels and other below-ground structures where damp areas or active leakage indicate failure of the primary waterproofing system.
  2. Water Retaining Structures – Injection of hoses cast into construction joints in tanks, reservoirs and other liquid-retaining structures, commonly installed between hydrophilic waterstops as an additional sealing measure. Injection is typically undertaken where leakage becomes evident during filling, pressure testing or operation.
  3. Systematic Leak Investigation & Compartment Injection – Treatment of membrane-lined structures where the original point of water ingress cannot be directly identified from the visible internal leak. Construction records and hose layouts are reviewed to establish likely water paths, with individual hose runs injected in a planned sequence to progressively isolate and treat the affected area.
  4. Proactive Installation & Injection – Installation of re-injectable hose systems at construction joints and structural interfaces identified as presenting an increased risk of leakage. Hoses can be injected during construction where required or retained as an accessible injection pathway should leakage develop in the future.
Trusted material suppliers
  • MC-Beuchemie
  • Normet Australia
  • Sika Australia
/ 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.

Contact Us
Background
/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.
Acciona
Acciona Project
“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

Gamuda
Gamuda Project
“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

CPB
CPB Project
“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

John Holland
John Holland Project
“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
JAGCON Project
“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

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SKILLS AND
EXPERTISE?

Contact us now for a no-obligation consultation.

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