6 Signs You Need Shipping Container Maintenance

Shipping Container Maintenance Checklist

Monthly, or semi-monthly inspections can help prolong the life of your shipping and storage container.

Inspect the entire outside structure for dents, chipped paint, debris, and anything else that causes rust.
Inspect around all openings for rust or leakage. Repair any weather stripping or calk.
If you have any type of HVAC, change the filter and preform manufactures maintenance.
Ensure stored goods inside the unit are distributed somewhat evenly.
Be sure the structure is still level.

Get Expert Container Maintenance with Advanced Container Co.

Maintain, Repair, and Replace Your Shipping Container with Advanced Container Co.

For over 35 years, Advanced Container Co. has been a trusted provider of container repair and maintenance services. We serve clients across Houston, the Gulf Coast, and nationwide—offering mobile repairs, depot services, and custom modifications.

You can count on us to supply, customize and repair your shipping containers. Fill our our contact form or call us at (713) 670-8801.

Shipping Container Maintenance

Shipping Containers You Can Count On

Whether you use your structure for shipping products, storing goods, or even a portable office or restroom, you need to keep it in good working order. The first step to ensure this is buying it from a reputable dealer. Advanced Container Company is a leading supplier and fabricator in Houston, Texas and we ship them anywhere in the US. Contact us today to learn more.

Signs of Container Damage

1. Container Paint is Peeling or Flaking

The paint job of your shipping container is more than just for aesthetics. It also acts as a weatherproof seal. In line with the first sign of maintenance, noticing peeling paint is a preemptive strike against expensive repairs and replacement.

Water, salt, gas, and environmental debris can seep through to the interior of the container as well as attach to the metal of the container. this can lead to rust and irreparable damage. Regular shipping container maintenance is crucial to the longevity of your product.

Why it matters: Paint isn’t just for aesthetics—it acts as a barrier against corrosion. When the paint begins to peel or flake, the underlying steel becomes vulnerable to rust.
What to do: Repainting and sealing exposed metal can prevent long-term structural damage. Look for signs of bubbling, chipping, or discoloration.

2. Container has Rust and Mold

Rust or Corrsion
Rust is the beginning signs of deterioration. If left unchecked, the spread can alter your shipping container’s ability to stay in form which eventually leads to collapse.

Interior rust is a sign of weathering, which means water has somehow entered the container. Eroded and corroded metal, which your shipping container is made of, is harmful to the safety of the items held within as well as its own structure.

Why it matters: Rust weakens the container’s structural integrity, especially on corners, roof panels, and the container floor.
What to do: Surface rust can often be sanded and sealed. Deeper corrosion may require patching or welding. Ignoring it could lead to holes or weakened joints.

Mold
Climate-controlled shipping containers should never have mold or rust. If either is found, the system needs to be cleaned immediately as well as having its temperature control unit inspected for repairs.

One of the more common reasons for this is failing to replace the air filter. It can allow moisture to remain inside the shipping container, providing a perfect home for mold. Regular inspections of the HVAC system should be preformed following the manufactures guidelines.

Rust and mold are the biggest signs that you need shipping container maintenance.

3. Container Roof Maintenance

The roof of a shipping container is very important and can be a weak spot if it’s not treated correctly. Below are best practices for maintaining a safe sturdy roof.

We recommend regular inspections of the roof for debris, ice, snow and standing water. These items need to be removed immediately.

Do not put too much weight on the actual part of the roof. But the corner posts have stability, that’s why shipping containers are often stacked on top of each other.

To prolong the life of your shipping container, repair all dents in the roof immediately. Dents can collect dust and moisture which will lead to rust. After repairing any dent the area should be treated with specialized paint and sealant. Keep an eye out for sagging in the roof. If this happens there is little that can be done to repair it.

4. Floors are a Sign of an Unlevel Surface

A sign that your shipping container needs maintenance is an irregular, uneven or buckling floor. It is imperative to store your structure on a level surface. If steel storage containers are placed in one spot long term, and not on a hard surface, the ground can settle. This can cause bending and can weaken the whole structure. If settling occurs re-leveling will be necessary.

Soft or Warped Flooring

Why it matters: The marine-grade plywood floors in shipping containers are designed to handle heavy loads. If they become soft, uneven, or warped, it’s a sign of moisture damage or rot.
What to do: Replace affected floor sections promptly to prevent safety hazards or damage to stored goods.

5. Doors and Window Issues

One of our most popular modifications is adding doors and windows. Plus, all shipping containers have standard doors with hinges and locking bars. It is good to have regular Inspections for dust and dirt to prevent future rust. If your container doors or windows become difficult to open and close they may need lubricant or to be re-leveled.

Sticky or Damaged Doors

Why it matters: If doors are difficult to open or close, it may indicate a problem with the frame alignment or worn gaskets. Damaged doors compromise container security and weather resistance.
What to do: Inspect hinges, locks, and seals. Lubricate moving parts regularly and replace gaskets if they appear brittle or cracked.

6. Damaged Gaskets and Hinges

The purpose of gaskets surrounding openings of any product, including shipping containers, is to prevent fluids from seeping through. With constant use, though, gaskets wear down. You can even unknowingly trap liquids between its folds, allowing it to enter the container and cause potential damage.

Hinges, too, wear down with use. Repeatedly scraping and scratching the paint can lead to rust and damage to the doors. Debris can also get stuck between hinges, causing further damage. If you hear, see, or feel a difference in the hinges or gaskets, then it’s a sign you need shipping container maintenance.

Dents, Warping, or Structural Deformities

Why it matters: Major dents or buckling may affect how the container seals or stacks. This is especially critical if your container is being transported or used in a multi-unit structure.
What to do: Severe structural damage may require professional repairs. Don’t risk using a compromised container for storage or shipping.

Why Routine Maintenance Matters

Failing to maintain your shipping container can lead to costly repairs or even total replacement. Routine upkeep ensures your container stays weatherproof, secure, and fully functional. Whether it’s a one-time inspection or a long-term maintenance plan, investing in regular service protects your assets and prolongs your container’s usable life.