RAINWATER TANK REPAIRS

Plastic Rainwater Tank Repairs – Extend the Life of Your Tank with Sun’s Welding
A split or cracked rainwater tank doesn’t mean it’s the end of the line. Sun’s Welding can give your plastic rainwater tank a second life. Instead of replacing it, repair it! Not only will you save hundreds—if not thousands—of dollars, but you'll also help reduce landfill waste and do your part to protect the environment.

Most rainwater tanks in Australia are made from rotomoulded low-density polyethylene (LDPE), a flexible yet strong material. At Sun’s Welding, we use identical LDPE filler rods for seamless, long-lasting repairs that bond perfectly with your tank. These aren’t quick fixes or cosmetic patches—our plastic welds are structurally sound to withstand high water pressure, even in large-capacity rural or commercial tanks.

Whether your tank has splits, cracks, punctures, or major structural faults, we can restore it to full working order—often on-site, saving you downtime and transportation costs.

We also provide colour matching, including the full Colorbond® colour range, so your repair doesn’t just function like new—it looks like it too.

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Why Choose Sun’s Welding for Rainwater Tank Repairs?

• ✅ Save thousands by repairing instead of replacing your tank

• ✅ Reduce plastic waste—a more sustainable, environmentally friendly solution

• ✅ We match materials: LDPE filler rods ensure full compatibility with your tank

• ✅ Colour matching available, including Colorbond® colours

• ✅ High-pressure safe: Our welds hold under serious water pressure

• ✅ Specialised equipment for advanced repairs:

  • Drader Injectiweld for precise plastic injection welding

  • Munsch premium extrusion welder for structural strength

• ✅ Experienced technician with a proven record of tank restoration

• ✅ Onsite repairs available – no need to transport your tank

• ✅ Strong, permanent welds, not temporary fixes

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Advanced Equipment. Reliable Results.

We employ high-end specialised plastic welding equipment designed for serious work, not short-term fixes. Our team uses the Drader Injectiweld for precision repairs and detailed welding, ideal for tight or awkward areas. For larger or deeper splits and structural cracks, we use the Munsch extrusion welder, delivering robust, professional-grade welds built to last. These tools, combined with our expertise, ensure your repaired tank can handle full water loads and high pressure without fail.

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Choose Repair Over Replacement

Plastic tank replacement can be costly, inconvenient, and environmentally wasteful. With Sun’s Welding, you get a smarter solution: one that’s cost-effective, eco-conscious, and built to last. Whether you’re on a farm, rural property, or urban site, we’ll help you avoid the expense of buying new—while restoring your tank’s performance and appearance.

Ready to give your rainwater tank a second life?
Contact Sun’s Welding today for a free quote and honest advice on whether your tank can be repaired—and restored—to its full potential.