Shipping container inspection: 8 key points to check before buying

Investing wisely in a used shipping container starts with a thorough inspection

Expected results

You want to buy a used shipping container that meets your needs, lasts the test of time and doesn't cost you a fortune in unexpected repairs. A well-done inspection is your best insurance.

The impact of a neglected inspection

Too many customers arrive with a pretty picture... but a container that reveals costly surprises on delivery: rotten floors, jammed doors, advanced corrosion. But not all companies have the same evaluation standards. That's why, whether you visit the container in person or remotely, a structured inspection remains essential to a wise purchase.

Solution: inspect methodically, and know the categories

At Conteneurs Experts, we've helped hundreds of customers choose the right container for the right purpose. Here are the container categories you need to know, followed by the 8 essential points to inspect.

The 3 main categories of used containers

1. IICL (Institute of International Container Lessors)
This container is still used in the shipping industry. It meets the strict standards of international transport and retains excellent structural condition. It may show minor signs of wear, but no major weaknesses. It represents an excellent option for long-term projects requiring reliability and robustness. However, it is very rare on the market, as its price is only slightly lower than that of a single-trip container (new container), and people will normally opt for this type of container...

2. Cargo Worthy
Usually 10 to 15 years old, this container is still safe for overseas transport. It has no holes or major structural damage, but may show cosmetic wear, such as dents or worn paint. For storage or standard projects, it's a reliable choice at a reasonable price. This is Conteneurs Experts' best-selling used container.

3. As is
Sold without warranty, this container may have major dents, rust, deteriorated floors or dysfunctional doors. It's only suitable if you're prepared to assess and pay for the necessary repairs. A good choice only if the price is right and you're familiar with the work involved.

8 things to look for during an inspection

1. Structural integrity
Step back and look at the overall shape: it should be straight, with no leaning or sagging. Open the doors: their smooth operation is often the first indicator of a sound structure. If they jam or don't close properly, this may indicate a twisted frame.

2. Doors and locking mechanisms
Inspect hinges, seals and locking bars. A dented frame or rusty hinge can prevent complete closure and create leaks. Test the complete closure and make sure it's airtight.

3. Roof
Visually check for dents or sunken areas. These can trap rainwater and cause corrosion. Surface rust may be tolerable, but any signs of blistering, significant deformation or holes should be assessed seriously.

4. Bottom and floor
Underneath the container, the steel beams must be intact and securely fastened. Inside, walk slowly: the floor should be rigid, flat and free of weak spots. A floor that sags or smells damp is often at the end of its life.

5. Dents, scratches and old repairs
Dents on the walls are common. On the roof, they become more worrying because of the risk of rust. Paint touch-ups or welded plates can hide more serious problems - so it's best to ask about repair history.

6. Rust
An orange patina is normal, especially for Corten steel. But blistering, flaking or pitting rust weakens the structure. Pay particular attention to the bottom corners, roof and base of doors.

7. Interior and lighting
Close the doors. Can you see light coming through the walls or roof? These are perforations to be sealed. Use a flashlight to inspect dark corners, welds and flooring. Also look for water stains or mold.

8. Odors and ventilation
A musty, moldy or chemical odor is often a sign of ventilation problems or a history of problematic use. Even if it looks good, a strong smell is an invisible indicator of deterioration.

Case in point

A Drummondville contractor wanted to buy a container quickly to convert into a site office. Upon inspection of a cargo worthy container, we discovered a dent in the roof that had already caused seepage. The customer opted for a slightly more expensive container, but in perfect condition. The result: rapid installation, no damage, guaranteed durability and our Le fonctionnel model delivered in 10 days.

What Conteneurs Experts has to offer

• Sale of containers classified according to objective and transparent criteria

• Full pre-delivery inspection, with photos of the container available remotely and/or on site

• Personalized advice on choosing the right category for your application

• Possibility of repairs or modifications to suit your project

Buying a container should never be left to chance.
Talk to us about your needs: ask a member of our team to help you.