Water tanks provide years of reliable service, but like any asset, they deteriorate over time. Unfortunately, many tank owners only discover a problem when a leak develops or an inspection uncovers significant damage. In reality, there are usually several warning signs that appear long before a tank reaches the point of failure.
Knowing what to look for can help you address issues early, protect water quality, and avoid the cost and disruption of a full tank replacement. Here are seven signs that your water tank may need relining.
1. Visible Corrosion
Corrosion is one of the most common indicators that a water tank requires attention. Rust spots, pitting, and deteriorating surfaces can weaken the tank structure over time. If left untreated, corrosion can lead to leaks and more extensive damage. Relining provides a protective barrier that helps prevent further deterioration and extends the life of the tank.
2. Recurring Water Quality Issues
If you notice discoloured water, unusual tastes, or an increase in sediment, the condition of the tank could be contributing to the problem. Ageing internal surfaces and damaged linings can create areas where contaminants accumulate. A professional inspection can determine whether relining is needed to restore the tank’s internal condition.
Guidance on maintaining water quality can be found from the Health and Safety Executive’s guidance on Legionella control.
3. Leaks Around Joints and Seams
Small leaks are often viewed as minor issues, but they can indicate a larger underlying problem. Water escaping through joints, seams, or panel connections may suggest that internal surfaces have deteriorated or that the tank is beginning to fail. Addressing these issues early can prevent costly repairs in the future.
4. Blistering or Peeling Internal Coatings
Protective coatings and linings shield the tank from corrosion and wear. Over time, these materials can blister, crack, or peel away from the surface. Once this protective layer is compromised, the underlying structure becomes vulnerable to damage. Relining can restore protection and improve long-term performance.
5. Cracks in GRP Panels
Glass reinforced plastic tanks are known for their durability, but they are not immune to wear and tear. Cracks can develop due to age, movement, or environmental factors. Even small cracks should be investigated, as they may worsen over time and lead to leaks or structural concerns.
6. Increasing Maintenance Costs
If your tank seems to require constant repairs, it may be time to consider a more permanent solution. Repeated patch repairs can quickly become expensive and often only address symptoms rather than the root cause. Water tank relining can provide a cost-effective alternative that restores the tank without the expense of full replacement.
7. Your Tank Is Showing Its Age
Many commercial water tanks remain in service for decades. While age alone does not mean a tank needs relining, older systems are more likely to experience corrosion, coating failure, and structural wear. Regular inspections are essential to assess the condition of ageing assets and identify opportunities for refurbishment.
Don’t Wait for Failure
Water tank failures rarely happen without warning. Corrosion, leaks, damaged coatings, and recurring maintenance issues are all signs that your tank may benefit from professional relining. By acting early, building owners and facilities managers can extend the lifespan of their water storage systems, maintain water quality, and avoid the disruption of unexpected failures.
If you’re concerned about the condition of your water tank, a professional inspection by Echo Square can help determine whether relining is the right solution before minor issues become major problems.