Concrete Tank Repairs
What You Need to Know About Repairing Concrete Water Tanks
Fixing your concrete tank isn’t just about sealing a leak, it’s about restoring the overall strength, safety, and usability.
Older tanks often suffer from poor construction, outdated concrete, and lack of waterproofing, leading to cracks and leaks over time. At Transform Water, we combine traditional expertise with modern repair methods to ensure your tank is properly sealed, supported, and ready for years of use.
Whether your tank holds drinking water, garden water, or stormwater, we’ll make sure it’s safe and works like new again.
Why Repair Instead of Replace in Sydney, Canberra & surrounds?
- Cost-Effective – Repairing is often a fraction of the cost of tank replacement
- Faster Turnaround – Most repairs are completed in 1–2 days
- Eco-Friendly – No demolition or landfill waste
- Longer Tank Life – Adds 10–20+ years to your tank’s lifespan
- Water-Safe – All our coatings and liners are certified for potable water
Concrete Tank Repair in Sydney and Canberra
About 50 years ago, concrete tanks were the most popular rainwater storage tanks available. Most concrete tanks greater than 10,000 litres in size were formed on site. This means that they were built on site and remain there today.
The problem? These tanks were built using concrete with outdated chemistry and poor waterproofing techniques. As a result, concrete tanks today often suffer from leaks, cracks, contamination, and other structural issues that impact water safety and tank lifespan.
At Transform Water, we specialise in repairing concrete tanks across Sydney, Canberra, and surrounding areas. We service homeowners, farmers, and businesses, using advanced materials, modern waterproofing techniques, and custom bladder installations to restore your tank to optimal condition.
Common Concrete Tank Problems We Repair
No matter if your tank is above or below ground, big or small — we’ve seen it all and fixed it all.
Leaking Concrete Water Tanks
1
Water escaping through cracks, joints, or porous surfaces – usually caused by age, poor waterproofing, or structural stress.
Cracked Tank Walls or Floors
2
Cracks form due to ground movement, heavy water pressure, or ageing concrete – leading to leaks and weakened structural integrity.
Seepage Through Tank Joins
3
Older tanks often have join lines that deteriorate over time, allowing water to seep out slowly, even without visible cracks.
Deteriorating or Crumbling Concrete
4
Concrete can break down after decades of use, especially if exposed to harsh elements or poor-quality mixes during construction.
Exposed Reinforcement or Spalling
5
Steel reinforcements within the concrete can become visible and start rusting, causing concrete to flake or fall away (known as spalling).
Contaminated Water Due to Algae or Bacterial Growth
6
Cracks or leaks allow organic material and bacteria to enter the tank, leading to unsafe, smelly, or discoloured water.
Our Concrete Tank Repair Methods
We offer several concrete water tank repair options to fit your tank’s specific needs:
Fixing Structural Cracks:
We use a strong epoxy to seal leaks and reinforce your tank walls, preserving its original structure.
Improving Waterproofing:
Our advanced waterproofing methods, including new coatings or special linings, prevent leaks and protect your tank from future damage.
Rainwater Bladder Installation:
For worn-out tanks, we install custom bladders to maintain water cleanliness and prevent leaks, while using the tank’s frame.
Regular Maintenance:
We offer ongoing maintenance to ensure your tank stays in top condition, addressing minor issues before they become major problems.
Our Process: How We Repair Concrete Tanks
We’ve designed our repair process for minimal disruption, long-lasting results and maximum safety.
1. Inspection & Assessment
2. Drain & Clean
3. Repair & Reseal
4. Test & Restore
No Need to Empty the Tank? Yes, It’s Possible
One of the best things about our tank liner installation service is that you don’t have to empty your tank. That means:
- No water wastage
- Faster installation time
- Lower costs – no need to transport or store water
- Keep your tank in use during the process
This makes it perfect for homes, farms, and businesses that rely on their tank every day.
Are Concrete Tanks Still Worth Repairing?
Yes, if you already have one.
Concrete tanks are still structurally solid if maintained well. With proper repairs (like modern coatings or tank liners), they can continue to serve you for decades more.
At Transform Water, we specialise in repairing and restoring these ageing tanks — giving them a new lease on life with modern waterproofing and reinforcement methods.
Why Choose Transform Water?
Here’s why we’re the right choice for your concrete tank repair needs:
- Expertise and Experience: Our local teams are highly skilled and experienced in servicing Sydney, Canberra, and all of NSW & ACT. We have the knowledge to handle concrete tanks of any size and condition.
- Premium Materials for Lasting Results: We use only the highest quality materials to ensure that every repair is long-lasting, safe, and effective.
- Customised Solutions: We understand that every tank is different. We tailor our services to meet the specific needs of your tank.
- Eco-Friendly: We focus on fixing existing tanks to help reduce the need for new materials and cut down on waste.
Ready to Get Started?
If you’re having problems with your concrete water tank, don’t wait until they get worse. Contact Transform Water today to set up a consultation.
