---
title: "How to Paint a Shipping Container: A Step-by-Step Guide"
description: Expert tips on prepping, priming, and painting a shipping container to prevent rust and extend its life.
---

[Think Inside the Box Blog | Shipping Container News ](https://www.falconstructures.com/blog)

# [How to Paint a Shipping Container: A Step-by-Step Guide](https://www.falconstructures.com/blog/how-to-paint-a-shipping-container)

 Written by [Becca Hubert](https://www.falconstructures.com/blog/author/becca-hubert) | May 7, 2025

Painting a shipping container does more than add a fun, branded color. It protects the steel from corrosion and extends the container’s lifespan. 

But getting a durable, professional-looking finish takes more than just grabbing a brush and cracking a can of color. Proper surface prep, the right primer, and the right type of paint all make a major difference in how your paint job will look and last. 

Here’s how to paint your shipping container the right way. 

 

*Watch the full process of painting a shipping container.*

## Step 1: Prep the Surface

Like any paint job, thorough surface preparation is critical. This will give your paint the best chance to adhere and protect the container for years to come. 

- **Remove stickers and labels:** Old shipping labels, decals, and any other adhesives need to be removed to avoid paint peeling later.
- **Sand the surface:** Focus especially on what we like to call “hot spots,” the welded areas or places where heat from fabrication affected the surface. 
- **Remove rust:** Use a wire brush, grinder, or sandpaper to knock off surface rust. Treat deep rust spots with a rust converter if necessary. 
- **Clean away dirt and debris:** Wipe down or pressure wash the container, letting it dry completely afterward. 
- **Caulk gaps and openings:** Seal seams and any edges around openings, like those for doors and windows, with caulk to keep moisture out.
- **Mask and tape:** Use painter’s tape and plastic or paper to protect locks, hinges, door hardware, vents, and anything else that won’t be painted. 

## Step 2: Prime the Container

Next, use primer to create a strong foundation for the topcoat that will also help resist corrosion.

- **Use a special primer on bare metal & welds:** Areas with bare steel, removed rust, or welds need a high quality direct-to-metal primer.
- **Prime the rest of the surface:** Once those spots are primed, coat the rest of the container with a corrosion-resistant primer. We use a mid-coat primer, which evens out the surface and prepares it for the top layer of paint. 

## Step 3: Paint the Container

Now comes the fun part, you’re ready to paint! 

- **Spray for the best finish:** A paint sprayer delivers an even, professional finish. Keep a brush handy for touch-ups if needed. 
- **Choose your paint:** At Falcon, we use 100% acrylic water-based paint with low VOCs (volatile organic compounds) for durability, easier cleanup, and lower environmental impact. 
- **Consider temperature & humidity:** Ideal painting conditions are between 50°F and 85°F with low humidity. Being based in Texas, we know those conditions aren’t a guarantee, so allow your container more time to dry between coats if the weather is uncooperative. 
- **Allow enough cure time:** Ideally, let the paint cure for 48 hours before touching or moving it. Wait about 30 days before pressure washing so the paint can fully harden. 

## Pro-Tips Before You Go:

- For heavy industrial use, you can use polyurethane paint. But be wary of the hazardous chemicals involved and special procedures for mixing and application.
- Don’t sandblast your container during the preparation stage, as it strips off a lot of marine-grade paint protection that deters rust. It also requires specialized equipment, and the cost and mess of that much sand is substantial.
- Treat any future rust patches as they appear. These could be caused by improperly primed rust spots, unsealed welds, or scratches. If you see brownish-orange stains or bubbling under the paint, sand the spot down, then apply rust-inhibiting primer before touching up with matching paint.

Painting a shipping container the right way takes preparation, the right materials, and a decent amount of patience. But the payoff is worth it. Whether you’re freshening up an older box or finishing a [custom container project](https://www.falconstructures.com/custom-shipping-containers), a high-quality paint job protects your investment and keeps the structure looking sharp for years to come.

Want more modified shipping container tips, tricks, and insight from the experts with 20+ years of experience? Follow us on [LinkedIn](https://www.linkedin.com/company/falcon-structures/) and subscribe to our [newsletter](https://www.linkedin.com/build-relation/newsletter-follow?entityUrn=7216820596569985025).

Ready to get started on your next project? [Request a quote today.](https://www.falconstructures.com/request-a-quote)

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