One of the benefits of purchasing a container vs. renting offsite storage is the ability to customize the box. The shipping container can be a sustainable and much less expensive onsite billboard for your business or company. The best paint for a shipping container really depends on its intended use and environmental exposure.

1. Marine-Grade or Industrial Epoxy Paint

Best for Longevity

• Pros: Highly durable, corrosion-resistant, withstands extreme weather, and protects against rust.
• Cons: More expensive and requires proper surface preparation (sandblasting or power washing).
• Best For: Containers exposed to harsh climates, marine environments, or long-term outdoor use.
• Recommended: Sherman Williams Kem 4000 Marine Grade Paint

2. Direct-to-Metal (DTM) Acrylic or Alkyd Paint

Best for Ease of Use

• Pros: Adheres well to metal, resists rust, and is easy to apply with a sprayer, roller, or brush.
• Cons: Not as tough as epoxy; may need touch-ups over time.
• Best For: Containers used for storage, offices, or housing projects in moderate climates.

3. Oil-Based or Urethane Paint

Best for UV and Abrasion Resistance

• Pros: Strong resistance to fading, chipping, and weather damage.
• Cans: Can be more expensive and harder to clean up.
• Best For: High-traffic areas or containers with heavy use.

Preparation Tips for Painting a Shipping Container

• Clean the Surface: Use a pressure washer and a degreaser to remove dirt and rust.
• Remove Rust: Use a wire brush, sander, or rust converter.
• Prime the Surface: Use a rust-inhibiting metal primer (especially for epoxy or oil-based paints).
• Choose the Right Application Method: Spray painting provides the best coverage, but rollers or brushes can work for smaller areas.

The recommended amount of paint for a 20ft shipping container is (8 Gallons) and for a 40ft is (13 Gallons)

We encourage you to consult a painting expert who will be able to properly address the surface before the expense of painting. While it takes a little time, properly preparing the container for painting will be benefical for long term use. Once complete, a painted container can add years of affordable and smart exposure and advertising while also serving as a wind and watertight onsite storage.