Innovative Revetment Wall Repairs in Gold Coast, Brisbane & Sunshine Coast
At EnviroMarine Services, we provide advanced revetment wall repairs that deliver long-term, cost-effective alternatives to demolition and full reconstruction. With over 20 years of industry experience, our team has developed and refined proprietary techniques that restore failing revetment walls while strengthening adjacent structures and preventing further erosion.
Across South East Queensland, many waterfront property owners face the challenge of deteriorating concrete and block walls. Common issues include cracking, outward deflection, tie-back corrosion, foundation instability, concrete cancer, and the leaching of sand fill behind the wall. Left untreated, these problems compromise not only the revetment wall itself but also nearby retaining walls, paving, and building foundations.
EnviroMarine has invested heavily in cutting-edge revetment wall repair systems, including the Hold Fast Anchor System, composite fibre piles, polyurethane resin void filling, and advanced scanning technology such as 2D/3D Tri-Band imaging and ground-penetrating radar. These innovations allow us to accurately diagnose structural issues and implement permanent solutions with minimal disruption to surrounding surfaces.
Unlike traditional stop-gap methods like piling rock in front of the wall, our systems provide genuine structural reinforcement, restoring stability and extending the service life of existing walls. For property owners seeking reliable, long-lasting revetment wall repairs, EnviroMarine offers proven expertise, specialist equipment, and guaranteed results.
To provide consistency and quality control to our works we do not employ subcontractors, all our equipment is company owned and all our staff are company employees. As a client you will always be dealing directly with a representative of our company. As licensed contractors we guarantee our works.
Failing revetment walls are a major and growing problem throughout South East Qld.
The traditional solution has been to either demolish and rebuild at prohibitive cost or a stop gap measure such as piling revetment rock in front of the wall. Revetment wall repairs provide a sustainable, cost effective and long lasting solution.
However, if failing walls are correctly assessed the majority of them can be structurally repaired using the innovative techniques we have designed and developed.
Please bear in mind that whilst the revetment wall itself is important the treatment of associated leaching of fill material behind the wall is equally important and failure to rectify leads to failure of adjacent structures. Our underpinning division is constantly repairing structures caused by this problem.
EnviroMarine in conjunction with independent consulting engineers have developed the following systems for revetment wall repairs.
If your property has concrete walls of any type whether concrete block or panel type over the years some of the following symptoms may have appeared.
Sand fill behind the wall has leached out through various openings, this leads to creation of voids which cause instability to the wall but also more importantly to the secondary retaining walls behind the main wall. These voids are normally discernible by evidence of cracking in the adjacent structures, uneven paving and sand deposits on the canal bed.
In severe cases the wall panels will have deflected outwards, this is normally caused by failure of original tie back systems due to corrosion as galvanised steel was used instead of stainless steel.
Failure of the foundation system due to poor design, inferior construction methods or corrosion of reinforcing steel which leads to concrete spalling (concrete cancer).
For concrete walls a complete repair system is composed of following elements:
- Initial structural inspection and assessment of the wall structure.
- Cleaning of the wall surface.
- If lateral structural movement of the wall is present or likely in the future installation of our Hold Fast Anchor System. As this is a proprietary system we do not provide details unless you register with us.
- If foundation failure or vertical movement is suspected installation of Composite Fibre Piles (never rust).
- Where severe structural damage is present installation of reinforcing steel and application of Shotcrete Concrete
- Re caulking of joints and installation of weep holes or replacing filters in existing. We have imported specialised Underwater Sealants products not normally available in Australia.
- Underpinning of adjacent structures if required.
Location of voids behind walls and treatment of voids.
One of the most important but neglected aspects of long term wall maintenance. Traditionally voids have been located by means of visual inspection of slump in surface materials such as loose paving and turf. The major problem arises when concrete paving is present behind the revetment wall, traditional practise is to tap with hammers to produce drummy effect or drill multitudes of holes and probe with metal rods. We believe this is somewhat outdated and inefficient as well as leaving a lot of post construction damage to surfaces. Our approach has been to heavily invest in the latest technology to achieve more efficient results as follows.
Scanning of material behind wall with the latest 2d and 3d Tri Band.
Ground Penetrating Radar, this locates voids up to 3.0 metres in depth.
Scanning of concrete panels for spalling evidence and filling of voids with high pressure injection of Polyurethane Resins. Traditionally voids are filled with a sand pump which pumps sand and water into the cavity, however the sand settles eventually and leaves a hollow beneath the concrete surface which leads to future instability. Our Polyurethane resin under controlled pressure pumping will fill the voids completely and as it interacts with water permeates the multitude of subsurface cracks and fissures. The injection holes for the resin are only 14mm in diameter thus easily filled with negligible visual effect. Slumped paving may also be restored to original level.
Application of some or all of the above techniques will result in the successful repair of a majority of walls. If your wall is beyond repair we will advise of same and if requested provide a quotation on a new wall system.
The practise of placing revetment rock to the face of existing concrete walls to secure them whilst a long held practise is structurally not effective. The greatest lateral pressure generated by the rock which is normally placed on a 40- 45 degree batter is generated at the lowest point of the wall whilst the upper level of the wall which requires the greatest support receives the least support. The rock will stop the wall from collapsing however the wall face will still move laterally outwards enough to create cracks through which large scale sand erosion will occur. To solve the ongoing debate on the effectiveness of this material we recently commissioned an independent consulting engineer to carry out a review, his computations confirmed our above remarks.
Revetment rock is a great product to alleviate scouring and erosion of embankments where appropriate and for protection of existing rock revetment structures. We supply and install thousands of tons for the Gold Coast City Council and various clients every year and can supply a cost effective quote on request.
For full details of our Proprietary Scanning, Anchoring and Resin Systems please contact our office.
Long-Term Solutions for Damaged, or Cracking Revetment Walls
When it comes to repairing a failing revetment wall, experience, technology, and engineering expertise make all the difference. At EnviroMarine Services, we specialise in diagnosing the root cause of structural failure and applying tailored repair systems that provide durable, sustainable results. From minor stabilisation works to full structural reinforcement, our team delivers solutions designed to protect your property for decades.
Our comprehensive waterfront retaining wall repair process includes structural assessments, surface preparation, anchor system installation, polyurethane resin injection, composite pile reinforcement, and shotcrete application when required. These methods are complemented by re-caulking joints, replacing weep holes, and addressing fill material leaching behind the wall. By treating both the wall itself and the surrounding ground conditions, we provide complete stabilisation — not just cosmetic fixes.
Every project is carried out by our own team of licensed, highly skilled employees using company-owned equipment. We do not subcontract, ensuring quality control and accountability at every stage. In collaboration with independent consulting engineers, we continuously refine our systems to stay at the forefront of revetment wall technology.
While some walls may be beyond repair, in most cases our advanced techniques can restore stability and prevent the need for costly demolition and reconstruction. And if a new wall is required, we can provide competitive quotations for complete construction solutions.
If your property is showing signs of wall movement, cracking, voids, or erosion, now is the time to act. Contact EnviroMarine Services today for expert revetment wall repairs that safeguard your waterfront investment with confidence.