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Water Tank Relining Vs Replacement - What's The Best Option For Me?

Water tanks are an essential component of residential, commercial, and industrial setups. Over time, however, these tanks may deteriorate due to wear and tear, causing leaks, corrosion, and reduced efficiency. When faced with such issues, it's crucial to assess whether a water tank reline or a full replacement is the best solution. In this blog post, we'll explore the pros and cons of each option to help you make an informed decision.

What Is A Water Tank Reline?

A water tank reline is a process that involves applying a protective coating or lining to the interior surface of a water tank. It is done to restore the tank's functionality, address issues like leaks or corrosion, and extend its lifespan. The reline process typically involves the following steps:

  1. Tank Inspection: A thorough inspection is conducted to assess the condition of the water tank. This includes examining the interior surface for any signs of corrosion, leaks, or damage.

  2. Cleaning and Preparation: The tank is cleaned to remove any debris, sediment, or contaminants. The interior surface is then prepared by removing any loose or flaking paint, rust, or scaling.

  3. Surface Preparation: The tank's interior surface is prepared to ensure proper adhesion of the lining material. This may involve abrasive blasting, sanding, or chemical treatments to create a clean and smooth surface.

  4. Lining Application: A specialised lining material (for us, our own WRAS-approved polyurethane solution), typically an epoxy or polyurethane-based coating, is applied to the prepared interior surface of the tank. The coating is carefully applied to achieve a uniform thickness and ensure complete coverage.

  5. Curing and Testing: The twice applied lining material is left to cure and bond with the tank surface. Curing time can vary depending on the specific coating used. After curing, the tank is subjected to various tests, such as leak tests or quality checks, to ensure the effectiveness of the lining.

  6. Final Inspection and Commissioning: Once the lining is deemed successful, a final inspection is conducted to verify the quality of the reline job. The tank is then commissioned for use, with water supply restored.

Advantages Of Water Tank Relining

  1. Cost-effective: Reline is often more affordable than a full replacement, making it an attractive option for budget-conscious individuals.

  2. Minimal disruption: Reline requires less time and effort compared to a complete replacement, minimizing interruptions to your water supply.

  3. Eco-friendly: By reusing the existing tank, relining helps reduce waste and environmental impact.

Disadvantages Of Water Tank Relining

  1. Temporary solution: Relining extends the tank's lifespan, but it may not be a permanent fix. Further issues could arise if the tank's structural integrity is compromised.

  2. Limited applicability: Water tank relining is most suitable for tanks with manageable corrosion or minor leaks. Severe damage may necessitate a full replacement.

When Is A Full Tank Replacement Necessary?

A full water tank replacement becomes necessary in certain situations where the existing tank is beyond repair or no longer suitable for use. Here are some scenarios when a full replacement is typically recommended:

  1. Significant Structural Damage: If the water tank has undergone extensive structural damage, such as cracks, bulges, or weakened supports, a replacement is necessary. Structural integrity is crucial to ensure the tank's safety and prevent potential failures or collapses.

  2. Extensive Corrosion: When corrosion has severely affected the tank's metal or concrete structure, patching or relining may not be sufficient. Corrosion weakens the tank's integrity and can lead to leaks, making a full replacement the better long-term solution.

  3. Outdated Technology or Capacity: Older water tanks may have outdated technology, inadequate capacity, or insufficient features to meet current demands or regulatory requirements. In such cases, replacing the tank with a newer model can provide improved performance, increased efficiency, and compliance with modern standards.

  4. Irreparable Leaks: If the tank has persistent or extensive leaks that cannot be effectively repaired through relining or patching, a full replacement is necessary. Continuous leaks can lead to water loss, reduced water pressure, and potential water damage to surrounding areas.

  5. Changes in Water Needs: If there has been a significant change in water usage patterns, such as an increase in demand or a shift in the type of water being stored, a replacement may be required to accommodate the new requirements. This ensures that the tank can adequately meet the updated water needs.

  6. Compliance with Regulations: If the existing water tank no longer complies with industry standards, safety regulations, or local building codes, a replacement is necessary to ensure compliance. Upgrading to a new tank that meets the required standards helps maintain safety and avoids potential legal issues.

Advantages Of A Full Water Tank Replacement

  1. Long-term solution: Installing a new water tank ensures that you won't encounter recurring issues in the foreseeable future.

  2. Enhanced performance: Newer tanks often come with improved features, such as increased capacity, better insulation, and advanced monitoring systems.

  3. Compliance with regulations: If your existing tank no longer meets industry standards or safety regulations, a replacement is necessary to ensure compliance. C. Disadvantages of full replacement

Disadvantages Of A Full Water Tank Replacement

  1. Higher cost: A full replacement generally involves more substantial expenses, including the purchase of a new tank, installation costs, and potential modifications to plumbing systems.

  2. Disruption and time-consuming: Removing the old tank and installing a new one can cause temporary disruptions to your water supply and require additional time for completion.

Water Tank Relining Vs Replacement - Making The Decision

Deciding between a water tank reline and a full replacement requires careful evaluation of various factors. While relining offers a cost-effective and minimally disruptive solution, it may not be suitable for tanks with extensive damage. On the other hand, full replacement provides a long-term solution, enhanced performance, and compliance with regulations but comes with a higher cost and temporary disruptions.

At Tank Reline, we offer free of charge surveys nationwide. Equipped with 5 project hubs throughout the UK, we can quickly respond to your enquiry and send a member of our experienced Engineering Team to assess your water tank and clarify the best solution.



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