A Guide to Tank Liner Materials: Making the Right Choice for Your Storage Tank

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Selecting the right liner material for your above-ground storage tank is a critical decision that can directly impact the longevity, performance, and maintenance requirements of your storage system. 

Tank liners play a vital role in protecting the structural integrity of your tank, preventing leaks, and safeguarding the stored contents. However, with various tank liner materials available in the market, it may be challenging to determine the most suitable option for your specific storage needs and environmental conditions.

ATM Tanks, a trusted name in panel tanks for over 15 years, specialises in designing, installing, repairing, and maintaining above ground storage tanks for various sectors, including government, energy, and mining. In this blog post, we aim to provide a comprehensive overview of popular tank liner materials, discussing their properties, applications, benefits, and potential drawbacks. By understanding the key characteristics of each material, you can make a well-informed decision when choosing the ideal liner to protect and maintain your storage tank’s condition.

We will explore the most commonly used tank liner materials, such as geomembranes, polyurethane and epoxy coatings, comparing their pros and cons to help you assess their suitability for your storage needs. We will also discuss how each material performs in different environmental conditions and their compatibility with various storage contents. 

Finally, we will emphasise the importance of partnering with a reputable and experienced provider, like ATM Tanks, to ensure that your tank liner installation, maintenance, and repair projects are handled professionally and with utmost precision.

Stay tuned as we delve into the world of tank liner materials, learning about their distinct properties and applications and discovering how ATM Tanks can support you in finding the perfect liner choice for your storage tank system.


Geomembranes, including High-Density Polyethylene (HDPE) and polyvinyl chloride (PVC) liners, are among the most popular tank liner materials used today. These versatile, durable, and cost-effective liners can provide long-lasting protection for various storage applications.

HDPE liners, made from a robust and flexible plastic material, are highly resistant to chemicals, corrosion, and ultraviolet radiation. They are excellent for tanks exposed to harsh environmental conditions or storing corrosive and reactive chemicals. On the other hand, PVC liners, composed of a strong and flexible polymer, can be used in water storage tanks due to their impermeability, stability, and long service life.

However, geomembranes may not be suitable for every application. HDPE liners are not ideal for high-temperature storage or fluctuating temperatures, as they may become brittle, while PVC liners can be prone to deterioration due to long-term exposure to sunlight and weather.

Polyurethane Coatings

Polyurethane coatings offer a durable, seamless, and flexible solution for tank liners, providing excellent protection against corrosion, chemicals, and leaks. These liners are customised to fit tanks of various shapes and sizes, making them an adaptable choice for diverse storage applications.

Additionally, polyurethane coatings exhibit remarkable resistance to ultraviolet radiation, temperature changes, and abrasion, ensuring superior longevity and minimal maintenance requirements. Although these liners may have higher upfront costs compared to other materials, their long-term durability and low maintenance needs make them a cost-effective investment in the long run.

Nonetheless, proper surface preparation and installation are imperative in ensuring the effectiveness of the polyurethane liner. Engaging a professional tank liner service provider like ATM Tanks can guarantee a meticulous installation process, resulting in a high-quality and lasting solution for your storage tank.

Epoxy Coatings

Epoxy coatings are another popular choice for tank liners due to their robust resistance to chemicals, corrosion, and abrasion. These liners form a seamless, protective barrier on the internal surfaces of the tank, effectively locking out moisture and safeguarding the tank’s contents.

Epoxy coatings boast high structural strength, ensuring the liner remains intact despite any physical impacts or stress. Additionally, their excellent adhesion properties minimise the likelihood of leaks and offer superb protection for long durations.

However, epoxy coatings may not be the best fit for all tank types and storage applications. They can become brittle over time, especially under extreme temperatures or prolonged exposure to ultraviolet radiation. A professional tank liner service provider like ATM Tanks can help you determine whether epoxy coatings suit your specific storage requirements and environmental conditions.

Choosing Your Tank Liner Material Wisely

Each tank liner material offers its unique set of advantages and limitations. Determining the ideal liner for your storage system depends on factors such as tank size, shape, environmental conditions, and stored contents. Engaging an experienced and reliable tank liner service provider like ATM Tanks can ensure a well-informed decision tailored to your unique storage tank needs.

Apart from selecting the right liner material, proper installation, maintenance, and repair services are crucial in ensuring the liner’s efficiency and longevity. With over 15 years of experience servicing and replacing panel tanks, ATM Tanks guarantees professional and high-quality liner services that can remarkably enhance the performance and lifespan of your storage tank.


Selecting the appropriate tank liner material is a critical component in maintaining the structural integrity, performance, and longevity of your above-ground storage tank. By understanding the properties, advantages, and limitations of various liner materials such as geomembranes, polyurethane, and epoxy coatings, you can make a well-informed decision most suited to your specific requirements.

ATM Tanks, a trusted name in panel tank services for over 15 years, can provide invaluable guidance and support in choosing, installing, maintaining, and repairing the ideal tank liner for your storage needs. By partnering with ATM Tanks, you can rest assured that your investment in a reliable and efficient storage tank solution is protected and optimised for the long term. Reach out to our team today to discuss how we can customise the perfect tank liners solution for your specific project.

Aaron James
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About The Author

Aaron James
Aaron has been working at ATM Tanks for the past 5 years. He has completed a wide range of projects across Australia including new tank builds, cleaning and servicing existing tanks and countless tank inspections. However he has excelled recently at project management for ATM Tanks.

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