Storage units are irreplaceable when protecting sensitive goods from weather, temperature, and water. But are shipping containers waterproof 100%? Are shipping containers waterproof enough to withstand harsh rains or transportation on the sea without any additional protection?
Let’s see why it is crucial to ensure your shipping unit is watertight and where to find one (spoiler - at Midstate).
The Impact of Water on Shipping Containers
The answer to the question “Are shipping containers watertight?” is “Yes, but not entirely.” They are made from steel and designed to withstand extreme conditions. However, the material is not completely watertight and can rust under the influence of moisture. With time, it can cause leaks, especially in poorly maintained units. Besides letting in the humidity and condensation, it can cause the seals to deteriorate, making the box less hermetic and secure.
The structure and the seals play a crucial role in keeping the unit dry and safe at all times. While shipping units are quite durable, even somewhat damaged walls, roofs, and doors can let water through. Therefore, regular inspection, additional waterproofing, and proper maintenance are crucial in protecting your cargo from humidity.
The Importance of Proper Maintenance
If you want to keep your shipping container waterproof, regular maintenance is a must. Here are a few steps to follow.
Examining the Roof
The roof of a storage container is under the most pressure due to all the humidity and other kinds of damage it has to withstand. Sometimes, even a minute dent or crack lets water seep in, damaging the contents. Make sure to inspect your unit’s roof regularly to ensure there are no signs of damage.
Checking the Walls
Another part that is often under a lot of load is the walls. Although they are almost always made of steel and are resistant to wear, exposure to elements can cause them to corrode. The best way to prevent it is to apply rust-proofing coatings on the walls and check them for any signs of rust or damage.
Evaluating the Door
Doors are as critical in maintaining a watertight container as the roof or the walls. However, the seal may become worn or cracked over time, letting the water in. While inspecting the state of your unit’s door, pay extra attention to the seal, its state, and how smoothly it moves.
Ways to Protect Your Shipping Container Long-Term
The best way to prevent costly repairs or replacements of your units is to take care of them consistently. Here are a few preventive measures you can take to keep your shipping containers waterproof.
Inspect Your Container Often
Most issues can be identified visually, so the first thing to do is to inspect your unit frequently. Pay attention to any dents, cracks, or other signs of damage that can compromise your unit’s water resistance. Also, keep an eye on any corrosion on the walls, door, and roof, as they are a direct sign of water contact with the insides of your unit.
Treat Rust as Soon as Possible
The worst thing about rust is how much it affects shell’s integrity and how quickly it spreads (especially in wet conditions). Once you spot any signs of rust, make sure to treat it immediately. The most effective method is to clean the damaged spot first, remove any signs of corrosion, and then apply a rust-resistant coating. This will stop the spread of corrosion and help keep your unit watertight in the long run.
Ventilate the Shipping Container
Proper ventilation is the best way to prevent condensation and moisture buildup inside the box. Make sure to install vents or use a ventilation solution inside to maintain a dry environment within the unit.
Waterproofing a Shipping Container
The best (and quickest way) to keep your shipping container waterproof is to get a wind and water-resistant one in the first place. Most containers are made from durable corten steel and are highly resistant to corrosion. Also, numerous units’ insides are covered with additional waterproofing materials, meaning no humidity will slip through.
Another way to ensure your shipping unit’s water resistance is to regularly treat it with a special water repellant and replace or repair old door seals. As the most vulnerable spot, seals may require additional attention.
Get Your Waterproof Container With Midstate
PROTECT YOUR GOODS FROM THE ELEMENTS WITH MIDSTATE’S TOP-TIER WIND AND WATERTIGHT STORAGE UNITS!
CONTACT US TODAY AT sales@midstatecontainers.com, (805) 925-4422, OR MAKE YOUR CHOICE FROM OUR WIDE RANGE!
Additional Measures for Waterproofing
Are shipping containers watertight even after all those measures? Yes, but sometimes, just a little extra effort can bring so much more value to their water resistance. Here are a few measures that can enhance your unit’s protection from water-related damage:
- Add a Protective Roof Coating: Applying a water-resistant coating can help even a weak roof repel humidity. Also, it helps avoid the pooling on the roof.
- Elevate the Bottom: Much water damage comes from its accumulation at the base of the unit. Elevating it helps protect the steel from prolonged exposure to moisture.
- Cover the Container: Tarp or another waterproof cover is irreplaceable in covering units from extreme weather conditions. This extra layer of protection helps keep the counter dry.
FAQ
How can I make my shipping containers last longer?
Inspect it regularly, treat rust as soon as detected, and apply special coatings to keep your shipping containers waterproof and help them last longer.
Can you waterproof a shipping container?
Yes, it can be done with exterior coatings, door seal replacements, and proper ventilation.
How do you moisture-proof a container?
Ensure proper ventilation, use rust-resistant materials, and tend to any cracks or damage.
How can a shipping container stop from leaking?
Repair or replace any worn seals, apply a protective coating to the roof and walls, and seal any cracks.
How do I protect my shipping container?
Stick to regular maintenance, rust treatment, ventilation, and waterproof coatings.
