Shipping Containers for On-Site Storage: How to Weather the Storm
When you are using a shipping container for on-site storage, durability is not optional. Harsh weather, moisture, and long-term exposure can quickly turn a poorly built container into a costly problem. Whether you own or rent a container, choosing one that can stand up to wind, water, and time is essential.
Wind and water are the two biggest threats to storage containers. If moisture gets inside, it can damage equipment, materials, or inventory. If the structure is compromised by wind or corrosion, the container may not last nearly as long as expected. That is why wind and watertight shipping containers are the gold standard for on-site storage.
What Does Wind and Watertight (WWT) Mean?
A wind and watertight shipping container is designed to keep out rain, snow, and strong winds. These containers are sealed to prevent leaks and drafts, making them ideal for protecting stored items in outdoor environments.
WWT containers are built to withstand:
- Driving rain
- High winds
- Snow and ice
- Sun exposure
- Long-term outdoor storage
While they are not certified for overseas cargo shipping, wind and watertight containers are perfect for storage applications. They may show signs of prior use, such as patches or cosmetic repairs, but they do not have holes, structural leaks, or compromised seals.
If your goal is secure, reliable on-site storage rather than international transport, a WWT container is often the most cost-effective and practical option.
Why Are Shipping Containers So Durable?
Shipping containers are engineered for extreme conditions. One of the main reasons they last so long is the material used in their construction. Most containers are made from corrosion-resistant Corten steel, which is designed to resist rust even in harsh environments.
This steel forms the container’s:
- Sidewalls
- Roof
- Floor frame
All components are welded together and sealed during manufacturing to maintain wind and watertight integrity. This construction allows containers to perform reliably in climates ranging from coastal humidity to dry desert heat.
Shipping containers have been known to survive earthquakes, hurricanes, tornadoes, fires, and even tsunamis. That level of resilience makes them a smart investment for long-term on-site storage.
Watertight vs. Waterproof: What Is the Difference?
These terms are often confused, but they are not interchangeable.
A watertight container is designed to prevent water from entering under normal environmental exposure. Rain, snow, and runoff should not penetrate the structure. If the container were holding liquid, it would also prevent leaks from escaping.
A waterproof container, on the other hand, typically relies on coatings or treatments to resist moisture. Under heavy exposure or prolonged conditions, water may still find its way inside.
For on-site storage, watertight containers offer superior protection. Waterproof coatings can help, but they do not replace proper sealing and structural integrity.
What About Condensation Inside Shipping Containers?
Condensation is a common concern, especially in humid climates or areas with significant temperature swings. Even watertight containers can experience condensation if moisture in the air settles on cool metal surfaces.
Modern shipping containers are designed to reduce condensation through:
- Corrugated steel walls that improve airflow
- Specialized exterior paint coatings
- Raised floors that limit ground moisture transfer
In older containers, occasional ventilation may be necessary. Opening doors periodically or adding vents can significantly reduce moisture buildup. For sensitive items, adding insulation or moisture control products can provide extra protection.
Fire-Resistant Qualities of Shipping Containers
Shipping containers also perform well in fire situations. Their steel construction allows them to contain fires rather than spread them, which is one reason they are commonly used as firefighter training facilities.
In shipping yards, containers are often stacked, making fire resistance critical. A container that can contain its own fire helps reduce damage to surrounding units. This same feature benefits on-site storage applications where safety is a priority.
Durable Floors That Can Handle Heavy Loads
The floor of a shipping container is one of its most important features. Standard container floors are built to support loads of up to 55,000 pounds when properly distributed.
Flooring options may include:
- Marine-grade plywood or bamboo
- Steel or aluminum flooring
- Vinyl plank flooring
- Coin vinyl
- Epoxy coatings
Most containers come standard with thick marine plywood installed over a steel frame. This setup provides excellent durability and resistance to dents, scratches, and heavy equipment.
A well-maintained container floor can last 15 years or more, even with regular use.
Why Shipping Containers Are Ideal for On-Site Storage
Even after retirement from the shipping service, containers continue to deliver value. Many units serve decades longer as on-site storage with minimal maintenance.
Additional benefits include:
- Long service life
- Strong security
- Weather resistance
- Customization options
Modifications such as roll-up doors, shelving, lighting, or custom paint can extend the container’s usefulness even further.
Get a Quote on Wind and Watertight Shipping Containers
If you need a reliable storage solution that can handle tough weather, wind, and watertight shipping containers are a smart choice.
Contact Transocean Equipment Management today for a free quote on new or used shipping containers. We offer standard units, specialty containers, and custom modifications to fit your exact needs.
Call us to get started and protect your equipment, inventory, or materials through any storm.
