
Painting the inside of a stock tank pool is not recommended as the paint will eventually flake or peel. However, if you are set on painting the inside of your stock tank, you will need to prime the surface and use a paint that is designed for use on metal. For instance, Sherwin Williams DTM or a high-performance epoxy.
| Characteristics | Values |
|---|---|
| Painting the inside of a stock tank | Not recommended as it will eventually flake or peel |
| Painting the outside of a stock tank | Recommended to prime the surface before painting |
| Recommended paint for stock tanks | Epoxy paints, Sherwin Williams DTM |
| Other recommendations | Use a rubber coating before painting, use Leak Seal |
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What You'll Learn

Painting the inside of a stock tank is not recommended
One blogger, Cuckoo4Design, recounts their experience painting the inside of a stock tank pool. They state that the paint "was flaking almost immediately" and advise readers to "save yourself the money and don't try to do what I did." Similarly, another blog post on The Wehner Home website describes how the author used flex seal on the inside of their stock tank pool, which "immediately chipped" and had to be scraped off, taking hours.
If you do decide to paint your stock tank, it is important to note that you should not use regular paint or spray paint directly onto the metal. The paint will chip, and repairing it is nearly impossible. Instead, you must first coat the metal with a rubber coating, such as Leak Seal, before applying paint.
To avoid the hassle of painting, some people suggest adding a pool liner to protect your stock tank pool from rusting. This method is recommended by Cuckoo4Design, who states that it is the "only way that will work permanently to protect your stock tank pool from rusting."
In summary, painting the inside of a stock tank is not recommended due to the high likelihood of flaking and peeling, as well as the difficulty of finding a suitable paint that adheres to the galvanized metal surface. If you are set on changing the appearance of your stock tank, consider adding a pool liner or coating the metal with a rubber layer before painting the exterior.
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If you must paint, use a rubber coating first
Stock tanks are made with a galvanized zinc coating that resists rust and paint. While it is possible to paint them, it is generally not recommended, especially on the inside, as the paint does not hold up well to water.
If you must paint your stock tank, it is important to prepare the surface correctly. First, remove any stickers, oil coatings, or dirt from the surface of the tank. This can be done using acetone, paint thinner, or automotive wax and grease remover. Then, sand and scuff the surface with fine-grit sandpaper, being careful not to compromise the galvanized coating. Wash the surface with mild soap and water to remove any dust from the sanding process. You can also wipe the surface with white vinegar or a mix of water and ammonia to create microscopic pores that will improve the adhesion of the primer and paint.
Once the surface is prepared, it is important to use a suitable primer or sealant. A rubber coating, such as Rustoleum Leak Seal, can be used to create a barrier between the metal and the paint. This will help prevent rust and improve the adhesion of the paint. Allow the rubber coating to cure for at least 24 hours before painting.
After the rubber coating has cured, you can apply your chosen paint color. It is recommended to use a paint that is specifically designed for use on swimming pools, as it will be UV-resistant, able to withstand exposure to chemicals, and safe for swimmers. Epoxy paint is a popular choice for stock tanks due to its durability and resistance to chemicals and UV rays. However, it is more expensive and has a strong odor, so proper ventilation is crucial. Alternatively, rubber paint is more affordable and easier to apply, but it typically only lasts a few years.
When applying the paint, follow the manufacturer's instructions carefully, including mixing the components correctly and applying the paint at the recommended temperature and humidity levels. Allow each coat of paint to dry thoroughly before applying the next coat to ensure a durable finish.
While it is possible to paint a stock tank using a rubber coating and paint, it is important to carefully follow the preparation and application steps to ensure the best results.
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Use a paint designed for metal
Painting the inside of a stock tank is not recommended, as it will likely flake, peel, or chip. However, if you are determined to paint the inside of your stock tank, it is important to use a paint that is designed for metal.
One option is to use a paint designed for metal, such as Sherwin Williams DTM. This type of paint is specifically formulated to adhere to metal surfaces and can help you skip the time-consuming process of priming. However, it is still important to properly prepare the surface by cleaning it with a paint thinner or acetone to remove any oils or dirt that may prevent the paint from adhering.
Another option for painting metal stock tanks is to use a rubber coating or primer first, and then apply regular paint on top. This two-step process can help the paint adhere better and reduce the chances of chipping or flaking. One recommended product for the first layer is Leak Seal, which is designed to be painted directly onto galvanized metal.
For the paint layer, choose an outdoor paint in your desired colour. It is important to let the paint dry completely before filling up the stock tank. Additionally, consider using epoxy paint, which is known for its durability and solvent-based formula that is resistant to chemicals, scrapes, and stains.
While painting the inside of a stock tank is possible with the right products, it is important to carefully follow the instructions and prepare the surface properly to achieve the best results and avoid common issues like flaking and peeling.
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Epoxy paints are a good choice
Painting the inside of a stock tank is generally discouraged because paint does not hold up well against water and will eventually start flaking or peeling. However, if you are determined to paint the inside of your stock tank, epoxy paints are a good choice.
Epoxy paints are solvent-based paints, which means they are durable and resistant to chemicals, scrapes, and stains. They are commonly used on the outside of oil rigs and are known for their toughness and resilience. This makes them ideal for use on stock tanks, which are often exposed to harsh elements and conditions.
Epoxy paint typically comes in two parts that must be mixed together to activate the epoxy and achieve the desired results. It is important to work quickly once the epoxy is mixed, as it dries pretty fast. Be sure to wear protective gear, such as a mask and gloves, as epoxy paint is heavy-duty and can be challenging to work with.
When using epoxy paint, it is recommended to apply two coats to ensure adequate coverage and protection. Some people even suggest painting in smaller sections to allow for better control and a more uniform finish. This method involves mixing only a portion of the epoxy at a time and painting in smaller areas, allowing each section to dry before moving on to the next.
While epoxy paint is a more expensive option, it can be well worth the investment. With proper application and care, epoxy paint can last for years without chipping or peeling, saving you time and money in the long run.
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Avoid using flex seal
Painting the inside of a stock tank is generally discouraged as paint does not hold up well against water and will likely peel or flake. However, if you are considering painting the inside of your stock tank, it is important to avoid using Flex Seal.
Flex Seal is a rubberized sealant spray that is often used to fix leaks and seal cracks. While it is effective for these purposes, it is not suitable for use on stock tanks. Several users have reported that Flex Seal does not hold up well on the inside of stock tanks and starts chipping and peeling off almost immediately. The process of removing the sealant is also tedious and time-consuming.
Flex Seal is not recommended for use on surfaces that come into direct contact with drinking water. It has not been approved for use around food, and there are concerns about its suitability for use with flammable liquids. While it can be used to seal gasoline tanks, it has not been tested for this application and does not have a UL rating.
Additionally, Flex Seal may not be suitable for the metal surface of stock tanks. It is not designed to withstand extreme heat or pressure, and there are concerns about its compatibility with certain types of metal. While it can be used on some metals, such as copper, it is not recommended for use on galvanized metal, which is commonly used for stock tanks.
Instead of using Flex Seal, consider other alternatives such as High-Performance Epoxy, which is known for its toughness and resilience. This product is commonly used on oil rigs and can provide a durable finish for your stock tank. However, it is important to follow the instructions carefully and take the necessary precautions when working with epoxy.
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Frequently asked questions
It is not recommended to paint the inside of a stock tank. Paint does not hold up well to water and will likely peel or flake.
The inside of a stock tank is made of galvanized metal, which is meant to resist wear and tear. Painting it will damage the galvanized protective coating.
One alternative is to use a rubber coating, such as Leak Seal, before painting with regular paint. Another option is to use a stock tank pool liner to protect the inside of the tank from rusting.
It is recommended to use a paint that is designed for metal, such as Sherwin Williams DTM or High-Performance Epoxy.
Yes, it is important to properly prepare the surface by removing the protective oil coating and priming the tank before painting.










































