Water Tank Lining

We provide a water tank lining coating solution to provide the ultimate protection from leaks, osmosis, blistering, cracks & heavily rusted tanks throughout Northern Ireland.

What is Water Tank Lining?

Water tank lining is a protective layer applied to the interior surface of a water tank to prevent corrosion and contamination. It is a coating system designed to cure at low temperatures. The coating acts as a barrier providing the ultimate protection from leaks, blisters, cracks, chemical attacks and corrosion.

Water tank lining is a crucial aspect of maintaining the quality of stored water, extending the lifespan of the tank, and avoiding costly repairs or replacements. Without proper lining, tanks can be susceptible to rust, leaks, and bacterial growth, which can pose health risks to those who consume the water.  

Techright, with years of experience in water tank lining, offers comprehensive coverage across Northern Ireland. 

Whether your steel tank is heavily rusted, your GRP or concrete tank is leaking, or your water retaining tank has visible cracks and blisters, our in-house team can restore and revitalise your tank.

Before After

The Benefits of Water Tank Lining


Water tank lining offers several benefits, including protection against corrosion and contamination. Corrosion can cause leaks and structural damage to your tank, while contamination can lead to health risks for those who consume the water. Lining your tank can also improve water quality by preventing the growth of bacteria and other harmful organisms. Additionally, water tank lining can increase the lifespan of your tank, saving you money on costly repairs or replacements in the long run.

  • Cost-effectiveness – repairing and lining a leaking water tank is more cost-effective than replacing
  • Enhances water safety
  • Protects against corrosion
  • Fast alternative to replacing a tank
  • Reduces ingress
  • Bacterial resistance to Legionella and other microorganisms
  • Reduces maintenance requirements – easy to clean, extremely flexible allowing movement
  • It may not be feasible to remove and install a new water tank due to the structure of the building. Most water tanks are in the Loft space with very little access

GRP Tank Lining 


Without full protection the GRP water tank over time will blister and crack. As a result, the GRP will form cavities full of stagnant and contaminated water. This is a process called Osmosis/ Hydrolysis. 

Basically, the GRP breaks down and capillary action causes the water to form the blisters which stagnate and eventually back feed the contaminated water into the tank. 

This leads to poor water quality within the water structure. As well as that, the GRP tank will eventually start to leak. 

Our in-house Legionella remediation team has the solution by providing you with a cost-effective GRP (Fiberglass) material and solvent free polyurethane paint which is WRAS approved for drinking. The tank coating will act like a barrier and will prevent the recurrence of Osmosis/ Hydrolysis. The tank lining will be resistant to the growth of bacteria such as micro aquatic organisms and black spore fungi. 

Alongside resistance and protection, our polyurethane coating will be much easier to clean and maintain, so you can witness long-life performance with little maintenance and will resolve any leaks.


Evidence of Osmosis/Hydrolysis


blisters, cracks,of,failing,water,tank,structure
Before After

Steel Tank Lining


 One of the most important steps in maintaining your steel tank is to regularly inspect it for any signs of damage or wear. This can include cracks, chips, or signs of rust and corrosion. By catching these issues early, you can prevent them from becoming more serious and potentially causing leaks or other problems.  

To provide the ultimate protection against chemical attacks, rust, and corrosion, consider lining your tank.  

At Techright, we understand the importance of maintaining clean and safe water tanks. That’s why we prioritize surface preparation and use linings that are resistant to bacterial growth. Our lining solutions not only protect against corrosion but also extend the lifespan of your tank and reduce the risk of bacteria like Legionella.

But our commitment doesn’t stop there. After the water tank lining process is complete, our team goes above and beyond by providing cleaning and chlorination services for the tanks. We believe in prioritising cleanliness and safety, which is why we collect and analyse microbiological samples at a UKAS accredited laboratory. This ensures that your stored water is not only safe but also compliant with HSE guidelines and regulations.

To give you peace of mind, we provide a detailed completion report, tank certificate, and microbiological test results. We want you to feel confident in the quality and safety of your water storage system. 

Contact us for expert advice on tank maintenance and lining. 

What Clients Say?


The professional attitude taken during the recent extensive works on site in relation to not only the job itself but with regards to health & safety was excellent. Aaron led the project from start to finish and was in full attendance for the duration of the works which gave us as a company the confidence to know the job would be executed correctly. Aaron’s team and third party contractor also carried out their duties to a very high standard.

Richard Barnes, Health and safety Manager FINNEBROGUE

I have been using Techright as water treatment specialists for the service, monitoring, and risk assessment of our water systems for several years. Aaron and his team have always provided a first class, cost-effective support service, and maintained a high quality of work. I would have no hesitation in recommending them to any prospective client.