DIY Guide: Repairing a Plastic Water Storage Tank at Home

Learn how to repair minor damages in your plastic water storage tank with our DIY guide, ensuring a reliable water supply by patching small cracks and leaks, and conducting proper maintenance.


Oswal Hi Tech Pvt Ltd

6/17/20232 min read

DIY Tank Repair: Essential Guide  | Hitank Water Tank Manufacturing unit in Bangalore, India.
DIY Tank Repair: Essential Guide  | Hitank Water Tank Manufacturing unit in Bangalore, India.

DIY Guide: How to Repair a Plastic Water Storage Tank at Home


A plastic water storage tank is a valuable asset for any household, ensuring a steady and reliable water supply. However, over time, wear and tear or accidental damage may occur, leading to leaks or cracks in the tank. While it's always recommended to seek professional help for major repairs, minor damages can often be fixed at home with a few DIY techniques.

In this comprehensive guide, we'll walk you through the step-by-step process of repairing a plastic water storage tank, enabling you to restore its functionality and extend its lifespan.

  1. Assessing the Damage: Begin by thoroughly inspecting the tank to identify the location and extent of the damage. Look for cracks, leaks, or weakened areas that require repair. Ensure the tank is empty and properly drained before proceeding.

  2. Cleaning and Preparation: Clean the damaged area of the tank using a mild detergent or cleaner, and rinse it thoroughly with water. Remove any debris, dirt, or loose particles around the damaged section. Allow the area to dry completely before moving on to the next step.

  3. Patching Small Cracks and Leaks: For small cracks or leaks, you can use a plastic tank repair kit or an epoxy adhesive specifically designed for repairing plastic. Follow the manufacturer's instructions carefully, and apply the adhesive or patch over the damaged area. Press firmly to ensure proper adhesion, and allow it to dry completely.

  4. Welding or Fusion for Larger Repairs: For more significant damages, such as larger cracks or holes, welding or fusion techniques may be required. This method is suitable for tanks made of high-density polyethylene (HDPE) or similar plastics. It involves using heat to melt and fuse the plastic back together. However, welding requires specialized equipment and skills, so it's advisable to seek professional assistance if you're unfamiliar with the process.

  5. Testing and Reinforcement: After the repair, allow sufficient time for the adhesive or welded area to cure properly. Once dry, fill the tank with water and closely monitor the repaired section for any signs of leakage. If necessary, reinforce the repaired area with additional layers of adhesive or consider using reinforcement patches specifically designed for plastic tanks.


Repairing a plastic water storage tank at home is possible for minor damages with the right tools, materials, and techniques. However, it's crucial to know your limitations and seek professional help for complex repairs or extensive damage. Regular inspection, maintenance, and prompt repair of any issues will help prolong the lifespan of your water storage tank and ensure a reliable water supply for your household. Remember, safety should always be a priority, so use appropriate protective gear and follow all manufacturer instructions and precautions when conducting repairs.