Why Choosing the Right tank linings and coatings Matters
Whether you’re dealing with a steel water tank, a chemical storage vessel or an above-ground fuel tank, using the correct tank lining or coating helps prevent contamination, structural decay and expensive repairs. These products act as a barrier – blocking out contaminants, resisting chemical attack, and protecting metal from degradation over time.
We only supply certified, high-performance systems that are built to last – from epoxy-based high build linings to water tank coatings approved for potable use.
Industrial Applications for Tank Coatings and Metal Paint
Our range of tank coatings and metal paint is made to suit multiple uses. Whether you’re painting above-ground fuel tanks, applying water tank lining for potable supply, or coating chemical storage units, every tank has different needs – and every project brings different conditions.
From drinking water safety standards to aggressive chemical environments, choosing the right tank coating depends on the contents, material, and application conditions. For example, steel tanks used in water utilities need WRAS-approved water tank coatings, while fuel storage often requires high build epoxy or phenolic systems that withstand immersion and high temperatures.
Visit our Metal Paint and Tank Linings and Coatings sections to view our full product range and get the technical support needed to protect and extend the lifespan of your tank.
You can also explore potable-safe options like SikaGard®-62 or Fosroc Nitocote EN901 – both WRAS-approved epoxy systems ideal for drinking water applications.
Tank Lining vs Tank Coating – What's the Difference?
A common question: what’s the difference between a tank lining and a tank coating?
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A tank lining refers to an internal high build system – designed to protect the inside of tanks in contact with fuel, drinking water, or aggressive chemicals. These are often based on epoxy, vinyl ester, or novolac resin systems, and are selected based on chemical resistance, cure time, and service conditions.
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A tank coating, on the other hand, can refer to external or internal coatings, often aimed at corrosion protection on steel tanks or pipework.
The choice between the two depends on where the product is being applied, what it’s being used to store, and the condition of the tank. Our Tank Linings and Coatings category offers options for both external coating and internal lining, including potable-safe solutions.
For aggressive immersion environments, products like Sherwin-Williams Dura-Plate UHS Epoxy Tank Lining or Jotun Tankguard SF are ideal.
What to Consider When Choosing Water Tank Lining, Coatings and Paint
When specifying a water tank lining or any tank coating system, there are a few factors that can’t be ignored:
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chemical resistance: Will the tank store fuel, chemicals, or drinking water?
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Film build: Most immersion linings need to be high build, applied in thicknesses that suit service demands.
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Surface preparation: For coatings to bond properly, steel tanks often need to be blast cleaned to Sa 2.5 or similar.
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Standards compliance: For potable water, the coating must be DWI or WRAS approved to avoid contamination.
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Application method: Depending on the tank size, access and condition, brush, spray or roller application may be preferred.
At Promain, we stock potable-safe water tank coatings, along with specialist systems for hydrocarbon immersion, high-temperature environments, and chemical contact. Our team is also on hand to assist with product selection, application guidance, or relining specifications.
We also offer options like Centrecoat Armourcoat Epoxy Gloss Wall Coating – a popular choice for internal walls in clean water or chemical environments where hygiene and resistance are critical.
Get Help Choosing the Right High Performance Tank Coatings and Linings
Protecting your tank begins with the right product – but it doesn’t end there. Correct application, regular inspections, and scheduled maintenance all contribute to the longer service life of storage tanks. Whether you're coating a new tank, repairing an existing one, or planning a full relining, we can help you find what you need.
Explore our full Tank Linings and Coatings category here, or check the Metal Paint section for protective coating systems. If you have questions, our technical team can recommend products, provide datasheets and even help guide your application or maintenance plan.
You can buy online or call us directly for project advice. We’re here to help you get it right – first time.
FAQs
Q: What is the difference between tank lining and coating?
A: A tank lining is a thick, usually epoxy-based internal system designed to protect from chemicals, rust, or contaminants in immersive environments. A tank coating usually refers to a thinner protective system, often applied externally or in non-immersion zones.
Q: What is the best coating for tanks?
A: The best tank coating depends on the tank's condition, contents, and use. For oil and fuel tanks, phenolic or novolac epoxy is often ideal. For drinking water, you need a WRAS-approved potable-safe epoxy system. For external tanks, use a corrosion-resistant metal paint suitable for the required C-class.
Q: What are tank linings?
A: Tank linings are high build systems used inside tanks to prevent corrosion, contamination, and damage from chemicals. They’re commonly made with 2-component epoxy, vinyl ester, or glass-flake reinforced materials.
Q: What to coat the inside of a fuel tank with?
A: For fuel tanks, use a phenolic or amine-cured epoxy system that can resist long-term hydrocarbon contact. Proper surface prep (e.g. blast Sa 2.5) is essential for good adhesion and performance.
Q: Is water tank paint safe for drinking water?
Only if the product is certified. At Promain, our water tank coatings are WRAS and DWI approved for use in drinking water tanks. These prevent contamination and ensure safe, clean water storage.