1. Canal Revetment Walls
  2. Information
  3. Frequently Asked Questions

Got a waterfront problem and not sure where to start? You're in the right place. We've pulled together the questions we hear most often, from homeowners who've just noticed something wrong to councils and builders looking for a compliant marine contractor they can rely on.

If your question isn't here, just give us a call. We're straightforward people and we'll give you a straight answer.

About Gold Coast Barges

How long has Gold Coast Barges been operating?

We've been working on the canals, rivers and waterways of South East Queensland for over 20 years. Gold Coast Barges is a family-owned business, and Greg, our director, has been personally involved in every aspect of the operation throughout that time. This isn't a franchise or a national company with rotating staff. We know these waterways, and we show up ourselves.

Are you really a family business?

Through and through, and across three generations. The first Gold Coast Barges vessel was built in 2000, and Greg's father Max bought it in 2002. Greg took the business on from Max and has run it hands-on ever since. Today the third generation is on the water too: our son Nik is a capable skipper and excavator operator in his own right. In 2022 we were proud to be named Family Business winner at the Gold Coast Business Excellence Awards. More than twenty years on, it's still the same family turning up to do the work.

What areas do you service?

We work across South East Queensland, including the Gold Coast, Brisbane, Redland, Moreton Bay, Logan, Sunshine Coast, and into Northern New South Wales. Our work covers coastal canals, tidal rivers, the Broadwater, the Coomera and Nerang rivers, Hope Island, Sanctuary Cove, and surrounding waterways. If your property is on or near the water in SE QLD, there's a good chance we've worked nearby.

Are your vessels commercially certified?

Yes, and this matters more than most people realise. All Gold Coast Barges vessels hold current commercial certification under AMSA (Australian Maritime Safety Authority) survey requirements. This is a legal requirement for any contractor carrying out marine construction work under commercial conditions. Not all operators in our market hold equivalent certification, so when you're comparing quotes, it's worth asking.

Do you work with councils and government bodies?

Yes. We have an established track record delivering waterway maintenance and marine construction projects for local government councils across South East Queensland. Our vessels are commercially certified, our safety management systems are current, and our crew hold the relevant maritime licences, all of which are standard requirements for council and government procurement.

Revetment Walls

What is a revetment wall, and how is it different from a retaining wall?

A revetment wall sits at the water's edge, on canal and tidal frontages, and is designed to resist erosion and wave action. A retaining wall is built back from the water and holds soil or garden levels in place. They serve different structural purposes and need different construction approaches. If your wall is at the canal edge, it's a revetment wall, and it needs someone who works in and around the water to assess and repair it properly.

What are the signs that my revetment wall needs attention?

The ones we see most often: soil subsidence or voids appearing behind the wall, cracking or bowing in the wall face, sections leaning toward the water, ground movement near a pool, garden or structure close to the waterline, and visible erosion at the base of the wall. If you've noticed any of these, it's worth getting an assessment before the problem develops further. Walls caught early are significantly cheaper to repair than walls that have failed.

Can I just fill the void behind my wall with gravel or concrete?

It's one of the most common temporary fixes we see, and unfortunately it usually makes the problem worse in the medium term. Filling a void without addressing why the void appeared means the underlying drainage or structural issue continues. The fill material often washes out again, or the added weight accelerates movement in a wall that's already compromised. We're always happy to look at a wall that's been self-repaired and give an honest assessment of where it stands.

How do you assess a revetment wall?

We inspect from the water side, which is the only way to properly assess the base of the wall and the condition at the waterline. We do this at low tide, which gives us the clearest picture of what's happening below the surface. In most cases we can give you a clear read on the extent of the problem and what remediation looks like after a single inspection.

What repair options are available?

It depends on the wall type, age and extent of damage. Options include rock armouring and replenishment, structural piling behind the wall, full or partial replacement, and in some cases a combination of approaches. We'll always give you our honest recommendation, which isn't always the most expensive option.

Barge Hire

What does barge hire include?

Most of our barge hire is wet hire, which means the barge comes with a qualified, licensed skipper and crew. All vessels are fully maintained and commercially certified. Every job is priced individually, because no two waterfront sites are the same. If you need excavator hire alongside the barge, we can arrange that too.

What size barge do you operate?

We run multiple vessels suited to different job types and access conditions on Gold Coast and SE QLD waterways. Contact us to discuss your specific project and we'll advise which vessel is the right fit.

What licences do your skippers hold?

Our skippers hold a Master less than 24 metres licence. All other crew hold a minimum of Coxswain Grade 3. Our vessels operate under a current AMSA Safety Management System. For council and commercial projects where compliance documentation is required, we can provide all relevant certificates on request.

Can I hire a barge without a crew?

Most of our hire is wet hire, which means the barge comes with our qualified skipper and crew. It's how we prefer to work. It keeps the job running smoothly and keeps our own team out on the water. That said, we do dry hire some vessels, including our Modular Work Platform and, depending on the job, the smaller punts like Elvis and Sassy or the Dumbo dumb barges. Tell us what you need and we'll let you know what we can offer dry.

Can you give me a price over the phone?

For straightforward jobs, often yes. Give us a call and we'll tell you what we can. For anything more involved, we'd rather talk it through and see a few photos first. Access is a big part of it. A pontoon in the way, or a narrow frontage where a barge can't fit, changes our whole plan of attack. Looking at a map and your photos lets us give you a clearer answer, the best value on the day, and sometimes a smarter way to structure the project altogether.

Can you take care of the whole project, not just the barge work?

Often yes, and it usually saves you money. We bring a lot more than the barge. We run our own tippers to take waste away or deliver materials to the ramp, flat-bed trucks to collect screw piers and other products, and a range of plant including excavators, a skid steer, pumps and augers. We also hold accounts with waste stations, quarries, concrete and sand suppliers and landscaping yards, so those savings can be passed on to you. We don't run concrete trucks ourselves, but we have trusted contractors for trucks and pumps that we've worked with for years, so you're not gambling on an unknown. A lot of clients don't realise everything a waterfront job involves until they're in it, so having us coordinate the moving parts takes the guesswork out and keeps the whole job running smoothly.

What types of projects do you use the barge for?

Rock armouring and coastal protection work, revetment wall construction and repair, screw piling, pontoon dredging, beach reprofiling, marine demolition, marine salvage, landscape and material delivery to waterfront properties, and general waterway construction. If the job needs machinery on water, the barge is how we get it there.

Other Services

What is screw piling and when is it used?

Screw piles are a foundation system installed by rotating steel piles into the ground, similar in concept to screwing a bolt into timber but at a much larger scale. They're commonly used on waterfront properties where traditional concrete footings aren't practical due to water table, soil conditions or access. They're faster to install than poured concrete, cause less ground disturbance, and can be used immediately after installation.

What is pontoon dredging?

Dredging is the process of removing accumulated sediment from the bed of a canal or waterway to restore navigable depth and water flow. It's most commonly needed at pontoon and jetty berths where silt builds up over time. We carry out pontoon dredging for residential, body corporate and commercial clients across SE QLD waterways.

Do you do beach reprofiling?

Yes. Beach reprofiling involves reshaping and restoring an eroded or degraded beach or foreshore to its correct profile. We use barge-mounted equipment to place and grade rock or sand, and work to a surveyed design profile. It's a service we deliver for councils, body corporates and private properties on the Broadwater and open coastal frontages.

Do you handle marine demolition and salvage?

Yes to both. Marine demolition includes removing old structures such as pontoons, jetties, redundant piling and deteriorated revetment walls from the water. Marine salvage involves recovering vessels, equipment or materials that have gone into the water. Both need proper marine plant and a team that knows how to work safely in tidal and tidal-influenced environments.

Working With Us

How do I get a quote?

Get in touch whichever way suits you, by phone, text or the enquiry form on this page. We'll ask a few questions to pin down exactly what you need, then ask for some photos of the site. Photos handle most jobs. If we can't get the full picture from them, we'll arrange a site visit so nothing gets missed. From there, most clients have a written quote within 24 to 48 hours.

How quickly can you get to a job?

It depends on current workload and whether the job needs tide-specific access. We'll give you a straight answer on availability when you contact us. If it's genuinely urgent, say so, and we'll do our best to fit an assessment in quickly.

Do you work with builders and landscapers on waterfront properties?

Yes, regularly. If you're a builder or landscaper with a client on a canal or riverside property and you need a marine contractor for a specific scope of work, we're used to working as part of a broader construction team. We can provide all the compliance documentation you'd need for a project file.

Do you work with body corporates?

Yes. Body corporates managing canal-front or waterfront properties are one of our key client groups. Shared revetment walls, pontoon maintenance and dredging are all areas where we work with strata managers and body corporate committees. We understand the approval processes involved and can assist with documentation for committee decisions.

What should I bring to a site inspection?

Nothing, just be there if you can. It helps to know roughly when the problem first appeared and whether anything has changed recently (recent construction nearby, flooding events, and so on). If you have a survey plan or previous inspection reports for the property, those are useful but not essential.

Have a question we haven't covered? Call us directly or use the enquiry form below. We're happy to talk through your situation before you commit to anything.