How Much Does Water Tank Relining Cost in 2026?

Published: September 16, 2026

If your cold water storage tank is showing its age, the first question is usually what it will cost to fix. Relining is often the most cost-effective option. That said, the water tank relining cost for your building in 2026 depends on a few key factors.

Here is what shapes the price, and how it compares with replacing the tank altogether.

Why There Is No Fixed Water Tank Relining Cost

No two tanks are quite the same. A small tank in an easy-to-reach plant room is a very different job to a large sectional tank on a rooftop. That is why reputable contractors rarely give a price over the phone. Instead, they need details of the tank, and often a site visit, before they can quote properly.

The Main Factors That Affect Water Tank Relining Cost

These are the things that make the biggest difference to the final figure:

Tank size. Larger tanks need more lining material and more time on site.
Condition. Heavy corrosion, leaking joints or damaged panels all add repair work before lining can begin.
Material. Galvanised steel, GRP and concrete tanks each need a different approach.
Access. Tanks at height, in basements or behind narrow doorways take longer to reach and work in.
Working hours. Evening or weekend work reduces disruption but can add to labour costs.
Location. Projects in London and the South East often cost a little more because labour rates tend to be higher.

Relining vs Replacement: How the Costs Compare

This is where relining really earns its place. In most cases, it costs around 40 to 60 percent less than a full replacement. That is because there is no need to remove the old tank, alter pipework or bring new panels into the building.

To put that into perspective, one published industry example priced the relining of a 15,000 litre sectional GRP tank at around £17,500. Replacing the same tank came to almost £30,000.

The downtime is shorter too. A 6,000 litre tank often takes around four hours to reline, and larger tanks rarely need more than a working day.

Why the Cheapest Quote Is Not Always the Best

A low price can be tempting. However, preparation is the most labour-intensive part of any relining job, and it is the first place some contractors cut corners. When that happens, blistering or peeling can appear within a few years, and you end up paying twice. Our article on why surface preparation in water tank relining matters explains this in more detail.

Before you accept a quote, also check that the lining materials are WRAS approved for contact with drinking water.

The Bottom Line

There is no one-size-fits-all water tank relining cost, but relining is usually cheaper and quicker than replacing the tank. The only way to get a reliable figure is a quote based on your tank and your site.

At ES Water Solutions, our relining projects come with a guarantee of up to 15 years. Send us your tank details or get in touch with our team, and we will put together a fixed quotation for you.

Ross St John

2 years ago

Great Company to use, very efficient and detailed. Highly recommend

Anjo

We manage a large residential block and recently reached out to Echo to quote to reline two water tanks that were failing. An absolute fantastic service all round. A quote was received within a day or so. Works were booked in and communication was excellent. We were really impressed with the engineers on the day. They communicated well on the day in terms of the plan of action. Once the work was complete, they ensured all areas were left clean and tidy. A follow up report post works was sent very soon after the works. We look forward to working with Echo again. If you need honest, reliable contractors who will get the job done and to a high a standard, don't hesitate to get in touch with them. Thank you.

Shaun Medlin

3 years ago

I contacted Echo Square on behalf of a client of mine who urgently needed her Victorian underground Cistern re lined. The work was quoted for promptly and the work carried out to a high standard by the engineers who were courteous and friendly despite their long drive to site. My client was very impressed and so grateful to have her Cistern back in working order. I would highly recommend this company and will most definitely approach them again should I have another client with tank issues in the future. 5 star service!

Terry Stevens

4 years ago

Echo Square attended site after we water jetted a concrete tank, they tank lined the entire tank in just a few days, fantastic job

Jessica Neil

Echo Square Services team assisted in helping with the refurbishment of two very difficult to access steel water tanks located at a VIP client’s head office. Their team did a fantastic job. I was especially impressed by the comprehensive photo report at the end. Highly recommend!

Laurence Green

** Highly Recommended!** Echo Square Services were assigned to reline two cold water tanks at a presdigious Law firm in Farringdon. The job was carried out successfully and on time with zeor disruption to the business operation. James and his team were a pleasure to work with, taking extreme care with all aspect of communication, health and safety and workmanship. Thank you James and the team!!

Rae Nunn

8 years ago

Having used other companies in the past I can wholeheartedly say that our dealings with Nationwide Tank Relining have been a breath of fresh air. We have had tanks relined, water hygiene assessments and floor coatings. All work was carried out in a timely manner and the quality of work has each and every time been exemplary. My bosses are thrilled with my decision to switch to Nationwide Tank Relining and a tank that was relined 10 years ago by them still looks good as new internally, and the money we've saved from choosing the right supplier has proven to be a very smart business move. Highly recommended!