If you’re thinking about using a shipping container for storage or even a living space, you’ve probably wondered, “Do shipping containers rust?” It’s a valid concern – after all, these metal boxes are exposed to the elements. This is especially important if you are going to use it for mobile offices. So, let’s talk about rust and shipping containers.
First things first, do shipping containers rust? The simple answer is yes. They’re mostly made of steel, and steel will rust if it’s not protected. However, shipping containers are more resistant to rust than your car.
What Makes Shipping Containers Resistant to Rust?
Most shipping containers are constructed from Corten steel, also called weathering steel. This type of steel is designed to rust but in a way that protects the container.
The Magic of Corten Steel
When Corten steel is exposed to the elements, a protective rust layer forms on its surface, which is known as a patina and is what makes Corten steel special. The patina prevents further corrosion by sealing out oxygen and moisture, the primary catalysts for rust.
Essentially, Corten steel forms a “shield” of rust to protect itself from more rust. This self-protecting feature is a significant advantage.
Other Factors Affecting Rust
While corten steel is durable, other factors can accelerate rust formation in your container. Scratched or damaged paint exposes the bare metal, making it susceptible to rust. Coastal environments with salt air can also speed up the rusting process.
Additionally, industrial pollutants transport and airborne salts industrial pollutants can negatively affect a container and contribute to rust forming. Standing water and debris left on the surface can also lead to rust development. To protect your container, it’s essential to address these factors.
How to Protect Your Container from Rust
Even with Corten steel’s rust-resistant properties, it’s still a good idea to protect your container to extend its lifespan. Here are some tips to prevent rust:
Regular Inspections Are Key
Regularly inspecting your container, especially after harsh weather, is crucial. Look for scratches, chipped paint, or rust spots. Addressing small issues promptly can prevent larger, more costly repairs in the future.
Proper Placement Matters
Where you place your container can impact rust development. Avoid placing it directly on the ground.
Using a concrete base or even wooden beams can improve ventilation and prevent moisture buildup underneath. This is important for preventing surface-level rust, as moisture trapped against the container can lead to rust forming.
Keep Things Clean
Keeping your container clean is a simple yet effective way to prevent rust. Dirt, debris, and standing water can trap moisture against the steel, accelerating rust. A periodic sweep or hose down can make a big difference.
Touch Up Paint
If you notice scratches or chipped paint, touch them up with quality zinc paint to inhibit further rust. Zinc acts as a sacrificial layer, meaning it will corrode before the steel, providing an extra layer of protection. Using dry zinc powder in your paint provides superior corrosion protection.
The Lifespan of a Shipping Container
Given the threat of rust, how long do shipping containers last? Shipping containers can last for several decades, even when exposed to the elements.
The robust Corten steel allows them to withstand harsh conditions, including some rust, without falling apart. With proper maintenance, like applying a fresh paint coating and addressing surface damage early on, a shipping container can last a long time. Some companies even have containers over 30 years old in their fleet that show no signs of rust.
So, should you be concerned about a shipping container rusting? With proper care and preventative measures, a shipping container can last you a lifetime. If you’re in the market for top-quality shipping containers, check out our extensive range of shipping containers for sale in NYC. And for those based in the Garden State, we also have a wide variety of shipping containers for sale in NJ, designed to meet your unique needs.
FAQs About Do Shipping Containers Rust
How Do You Keep a Shipping Container from Rusting?
You can prolong the lifespan of your shipping container and prevent rust with proper care. This includes regular cleaning, inspections, addressing damage quickly, and elevating it off the ground. Consider a concrete base or using beams for better ventilation.
If you’re using the container as a home, ensure it has proper insulation and ventilation. Regular maintenance is key. Also, keep the exterior clean and free of debris to mitigate rust. Applying quality zinc paint to the exterior can also help prevent rust from developing.
What Is the Lifespan of a Shipping Container?
The lifespan of a shipping container can vary, but a well-maintained unit can last 25 to 30 years on average. Some shipping containers may even last longer if built from durable Corten steel and properly maintained over the years.
Will a Shipping Container Home Rust?
A shipping container home, like any steel structure, can rust over time. The speed of rusting depends on the quality of the container, climate, and maintenance.
Since a home involves modifications and potentially exposed steel areas, regular rust inspections and maintenance are essential. This includes cleaning the roof and applying rust-prohibitive coatings to prevent and remove rust.
- Regular Cleaning – Removes corrosive elements such as dirt, salts, and industrial pollutants, preventing the formation of a rust layer.
- Rust-prohibitive Coating – Adds a protective barrier against moisture and oxygen, the primary culprits behind rust formation.
- Timely Repairs – Addressing scratches or chipped paint promptly prevents the exposure of bare metal, minimizing the risk of rust development.
How to Stop Container Rusting?
Preventing rust on shipping containers involves preventative steps like coating it with quality zinc paint and ensuring proper ventilation underneath. Regularly clean any dirt or grime off and touch up areas where the paint is chipped to prevent the spread of rust. When not in use, store your container properly.