Retaining Wall Waterproofing Brisbane and Gold Coast
Protect your property from water damage. Our cement and concrete retaining wall waterproofing details safeguard your foundation and walls by preventing erosion and structural damage.
Retaining Wall Waterproofing Brisbane & Gold Coast
Protect your property from water damage. Our cement and concrete retaining wall waterproofing details safeguard your foundation and walls by preventing erosion and structural damage.
We are a registered and licensed retaining wall waterproofing contractor servicing Brisbane and the Gold Coast. Our team works across residential, industrial, civil infrastructure, and commercial properties. Specialising in cement block, besser block, concrete block, brick masonry, and cinder block retaining walls, we apply proven waterproofing systems that comply with Australian Standards.
With over 20 years of experience, our waterproofing or tanking retaining walls include high-performance membranes, integrated drainage systems, crack injection services, and protective coatings—engineered to stabilise foundations and prevent water ingress at its source.
With SuperiorWaterproofing, you’re not just getting a service—you’re securing the longevity, safety, and value of your property investment.
What We Do
We provide complete retaining wall waterproofing solutions that protect against water ingress, hydrostatic pressure, and long-term structural damage. Our system combines crack repair, advanced membranes, drainage integration, and protective layering to ensure your retaining wall stays dry, stable, and durable.
Positive-Side Waterproofing (External)
Excavation & Membrane Installation: Excavating around the retaining wall to expose the structure and allow for the application of high-performance polyurethane waterproofing membranes. Subsoil drainage systems, such as agi pipes and gravel backfill, are installed to redirect groundwater and relieve hydrostatic pressure. Protective drainage boards are applied over the membranes to safeguard against damage during backfilling and to promote controlled water flow away from the wall. Waterproofing concrete retaining wall is externally is highly effective because it creates a direct barrier between the structure and surrounding soil and moisture.
Negative-Side Waterproofing (Internal)
Waterproofing concrete retaining walls incorporate advanced techniques to ensure long-term structural protection and moisture control. These include precision crack injection using epoxy or polyurethane foam resins to seal voids and restore wall integrity, the application of high-performance waterproof membranes to create a durable moisture barrier, and the installation of integrated drainage systems to effectively manage hydrostatic pressure. With proven expertise and industry-compliant methods, we deliver reliable waterproofing behind a retaining wall across Brisbane and the Gold Coast.
Why Choose Us?
When it comes to protecting your property from water damage, shortcuts aren’t an option—and neither is guesswork. At Superior Waterproofing, we combine technical expertise with proven systems to deliver long-lasting results. We don’t just apply membranes—we solve moisture problems at the source. Whether you’re dealing with hydrostatic pressure, structural cracks, or poor drainage, we tailor every solution to your site’s unique needs.
20 Years of Expertise That You Can Trust
- Our team brings years of specialised experience in waterproofing residential, industrial, and commercial retaining wall Brisbane & Gold Coast. We routinely manage large-scale projects with a focus on structural integrity, moisture control, and regulatory compliance.
Australian Standards Compliance
- Every project is carried out in line with Australian waterproofing standards, ensuring that your property is protected by methods and materials proven for our unique climate and soil conditions.
High-Performance Retaining Wall Tanking Details
- We use industry-leading membranes, crack injection technology, and integrated drainage solutions designed for maximum protection. Our approach ensures your structure is shielded from leaks, dampness, and long-term deterioration.
Tailored Retaining Wall Waterproofing Details
- No two projects are the same. Whether it’s a residential, industrial, public, or large commercial retaining wall in Brisbane, we customise our cement and concrete tanking or waterproofing approach to suit your specific needs and site conditions.
Guaranteed Value & Warranty
- A waterproof retaining wall doesn’t just fix existing problems—it prevents future damage, saving you from costly repairs. With us, you’re investing in the long-term strength, safety, and value of your property. Our waterproof retaining wall detail was delivered at an affordable cost.
Showcase of Our Retaining Wall Projects
Check out some of our photos of waterproofed block retaining walls Brisbane and the Gold Coast, showcasing our commitment to quality and durability.
Get Started Today
Protect your property with the industry’s best concrete retaining wall tanking solutions. At SuperiorWaterproofing, we pride ourselves on delivering flawless finishes that stand the test of time.
📞 Call us now at 0468 760 750!
Our Retaining Wall Waterproofing Details
SuperiorWaterproofing’s approach to concrete or cement block waterproofing is thorough, industry-compliant, and tailored to both residential and commercial needs.
Initial Assessment & Planning
Before starting waterproofing block retaining walls, we provide a free on-site inspection to assess soil conditions, wall stability, and existing drainage systems. This helps us identify the source of your water leaks and choose the appropriate waterproofing membrane for retaining walls, all while ensuring full compliance with Queensland building regulations.
Surface Preparation
Before we begin waterproofing retaining walls, we thoroughly clean and inspect the surface—removing debris, efflorescence, and any loose material to ensure strong adhesion of the waterproofing membranes.
Crack & Void Repair
Next, we seal structural gaps in waterproofing retaining walls using epoxy or polyurethane injection, stopping water ingress and strengthening the wall’s integrity.
Retaining Wall Membrane Application
Finally, we apply high-performance waterproof membrane for concrete block retaining walls from outside or inside, forming a seamless, durable barrier that protects your property against moisture penetration.
Protection Boards Installation
Durable boards are placed over the waterproof membrane for retaining wall to shield it during backfilling and prevent punctures or abrasions (Geotextile-backed drainage boards or corrugated plastic).
Drainage System Integration
Strategic drainage solutions are added to reduce hydrostatic pressure and redirect water away from the wall—critical for long-term stability.
Testimonials
What Our Happy Customers Are Saying
Call us now: 0468760750
I had a persistent leak in my basement, and Shawn and his waterproofer team were a pleasure to deal with from start to finish. Their communication was clear, and their advice on the best concrete block basement waterproofing methods for my situation. The work was done efficiently, and the results speak for themselves—no more damp walls or musty smell. I’m very happy with the outcome and highly recommend this Brisbane retaining wall waterproofing company.
I cannot fault these guys. Their team delivered outstanding leaky basement wall for our home—sealing cracks, installing proper drainage system, and waterproofing concrete block retaining walls outside with care and precision. Living near the water, we’ve had our share of moisture issues, but this crew knew exactly what to do. Great communication, a smooth process, and real attention to detail. Highly recommend for anyone dealing with basement leaks!
Excellent customer service and perfect follow-through on every job. This Brisbane waterproofing contractor is reliable, professional, and consistently delivers on time. They did an outstanding job waterproof cinder block retaining walls outside, and the results have held up beautifully. If you’re dealing with water seepage or need a fast turnaround on basement protection, I highly recommend getting in touch with these guys.
Do You Need Licensed Retaining Wall Contractor in Brisbane or Gold Coast?
Call Us 0468 760 750 Now!
To learn more about our professional waterproofing concrete block walls outside, feel free to email us at info@superiorwaterproofing.com.au.
Retaining Wall Tanking & Waterproofing Project Videos
Retaining wall worries? SuperiorWaterproofing offers the best retaining wall tanking and waterproofing services. Watch these videos to see how our experienced team effectively waterproofs retaining walls
Call us now: 0468760750
How to Waterproof a Retaining Wall Effectively?
Step-by-Step: How to Waterproof a Concrete Retaining Wall?
1. Surface Preparation: To prepare the concrete block wall for waterproofing or tanking, we start by cleaning it thoroughly to remove dust, debris, and any loose concrete. Next, we repair voids, honeycombed areas, and cracks using a quality patching compound.
2. Choose the Right Retaining Wall Waterproofing Membrane: Depending on your wall type and exposure, you’ll choose one waterproofing membrane fit to your situation:
- Liquid Membranes – Ideal for irregular or complex surfaces, these membranes are quick to apply and create a seamless waterproof barrier.
- Cementitious Coatings – A cost-effective option that works well on rigid concrete substrates, offering reliable moisture protection.
When it comes to protecting cement, concrete, brick, or retaining walls, liquid membranes are often the preferred choice. The retaining walls’ waterproofing products form a continuous, joint-free barrier that eliminates weak points.
3. Properly apply the waterproofing membrane products: Always follow the manufacturer’s guidelines for layering and curing the membrane when waterproofing block walls. Ensure the membrane extends above the soil line to protect against splashback, and use proper drainage and protection measures to prevent hydrostatic pressure and damage, especially in exposed or high-moisture environments.
4. Protect the Retaining Wall Waterproofing Membrane: Before backfilling, it’s important to protect the waterproofing system. We do this by installing protection boards or drainage sheets over the membrane to shield it from damage. To keep water moving away from the wall and reduce pressure, we also add a layer of geotextile fabric and gravel, ensuring the retaining wall stays dry and structurally sound for the long term.
5. Understand Wall Types and Challenges: Different types of retaining walls—such as block, poured concrete, or insulated concrete form (ICF)—each present unique waterproofing challenges, with underground walls posing even greater difficulty. No worries—our experts in waterproofing block walls are experienced in all conditions related to waterproofing in Brisbane & Gold Coast.
6. Avoid Common Mistakes: For effective concrete or cement block basement retaining wall waterproofing, don’t rely on membranes alone. Combine proper drainage, surface preparation, and the right membrane system..
Waterproofing for retaining walls are not optional—it’s protection with purpose.
Frequently Asked Question’s
Do you need to hire a retaining wall waterproofing contractors? Should you use both positive-side and negative-side waterproofing? Find the answers to these and other frequently asked questions from our clients below.
Is waterproofing a requirement for retaining walls in Queensland?
Yes, cement or concrete waterproofing for block walls are standard requirement in Queensland, Australia.
Regulatory Context
- The Building Act 1975 and Queensland Development Code (QDC) require that retaining walls include adequate drainage to protect surrounding land and structures.
- While drainage is compulsory, waterproofing a retaining wall is not always specified as a standalone requirement—but it’s often necessary to achieve compliance, especially in high-moisture zones or where hydrostatic pressure is a concern.
Queensland retaining wall waterproofing contractors like SuperiorWaterproofing integrate liquid membranes and drainage systems as their technique for achieving maximum performance in waterproofing block wall from inside or outside.
Is your waterproof retaining wall detail applicable to existing or damaged sealant?
Yes, our retaining wall waterproofing details are perfect on existing structures as long as it still has a stable structural foundation and a clean surface.
I am legally required to hire licensed waterproofing contractors on my cement block retaining walls?
Yes, Job—in Queensland, waterproofing work must be carried out by a licensed waterproofing contractor if it falls under regulated building activity. According to the Queensland Building and Construction Commission (QBCC), waterproofing is a licensed trade, and professionals must meet specific technical and managerial qualifications to perform this work legally.
When Licensing Is Legally Required:
– If the waterproofing is part of a structural retaining wall—especially one over 1 metre in height, or located near property boundaries or buildings—it likely requires council approval and must comply with building codes.
– If the work involves applying waterproofing details for retaining walls (e.g. membranes, crack injection, drainage integration) that affect the wall’s structural integrity or moisture protection, it must be done by a licensed expert.
What are the consequences of not waterproofing my cement or concrete retaining wall?
Whether it’s a concrete, cement, or cinder block retaining wall, the safety of your property could be jeopardised over time. It may suffer from erosion, water damage, and structural issues—leading to costly repairs down the line.
What assurance is provided that the waterproofing solution will remain effective over time?
Service Warranties
- Reputable waterproofing companies from Brisbane or Gold Coast like SuperiorWaterproofing and product manufacturers provide written warranties ranging from 7 to 10 years, depending on the system used.
- These warranties may cover material defects, installation quality, and performance under normal conditions.
- Some advanced systems, like liquid-applied membranes, maintain elasticity and adhesion even after accelerated aging tests.
- Call us for free quotation and warranty details now!
How long does it take to install waterproofing on a concrete block retaining walls?
The size, material type, and complexity of the installation are some variables that affect how long it takes to waterproof a retaining wall. It is better to speak with a licensed waterproofing contractor for a more accurate time estimate for the installation.
How do I choose the right materials for an effective waterproof retaining wall detail?
– Sheet Membranes: HDPE, PVC, or rubberized asphalt
– Liquid-Applied Membranes: Polyurethane or acrylic
– Cementitious Coatings: Polymer-modified cement blends
– Crack Sealers: Epoxy, polyurethane foam, or bituminous putty
– Geotextiles: Non-woven polyester for joins and crack reinforcement
– Drainage Boards & Primers: To relieve hydrostatic pressure and improve adhesion
Do I need to waterproof both sides of the retaining wall?
No. The positive (external) side of the wall is always the best option. However, you can have the negative (internal) side waterproofed in scenarios where positive retaining wall waterproofing is impossible. Remember that warranties are often limited in these scenarios.
What is the standard requirement for a cement or concrete basement retaining wall waterproofing in Queensland?
The Building Code of Australia (BCA) outlines the minimal specifications for waterproofing in Queensland, which includes a waterproof barrier system that complies with Australian Standard AS 3740-2010. This standard addresses the installation of waterproofing membranes for a variety of building types, including retaining walls.
What are the signs that you need to waterproof your retaining walls?
Cracks, bulging or bowing, and discolouration or staining are indications that a retaining wall has been harmed by water. You might also see water collecting or leaking from the retaining wall’s backside. As soon as you think that your retaining wall has water damage, take action to stop future damage and related safety risks.
What is the cost of waterproofing concrete block walls outside?
In Brisbane and the Gold Coast, the cost of waterproofing exterior concrete block walls typically ranges from AUD $40 to $120 per square metre, depending on the method, wall condition, and site access. For basic cementitious coatings or silane sealers, you’re looking at the lower end—around $40–$70/m². More advanced systems like liquid-applied membranes or sheet membranes can push the price to $80–$120/m², especially if excavation or crack injection is required.
Head Office
SUPERIOR WATERPROOFING PTY LTD
Vasey Court, Upper Coomera
4209
ABN 65 633 595 098
info@superiorwaterproofing.com.au
Tel: 0468760750
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1A, 27 Old Pacific Highway, Yatala,
Queensland, 4207 Australia
QBCC LICENSE : 15134140
