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Moisture and Condensation in Storage Containers

used containers

In this blog, we will tackle the problem of moisture buildup in your storage containers. We will highlight some of the issues, causes and solutions to moisture buildup inside of containers.

What problems can moisture cause?

You can think of the inside of a storage container as a microclimate with its own weather system. Since the floor of the container is made of wood, it acts like sponge soaking up moisture and storing it within the floor. When heat builds up inside the container, that moisture turns into condensation thus increasing the humidity inside the container. This can lead to the prolonged presence of moisture which can lead to rust buildup on the interior of the container, weakening the integrity of the container from within.

What causes moisture buildup?

The origin of the shipping container can have a huge impact on moisture buildup inside of the container. Let’s say you purchase a container that carried food products. If juices or food waste are left behind in the container, excess moisture can be released from these sources causing moisture buildup. Best practice is to inspect the interior of the container for these kinds of issues. Make sure the inside of the container is clean and dry.

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Location of the container when delivered will have a serious impact on moisture levels inside of it. If placed on an unleveled surface, water could collect underneath the container. As the water evaporates, it will be collected in the floor of the container. With the floor being wood, it acts as a huge sponge, soaking up the water and releasing it into the container as the temperature rises inside.

Solutions for moisture buildup.

Double checking your container before you purchase it is the best solution to a moisture problem. Be sure the floor is free of moisture spots and no existing condensation is present. Many third parties do not check for this when renting or selling containers. Level ground is another way to prevent moisture buildup. As mentioned previously, unleveled ground can trap water leading to increased moisture under the wood flooring of the container. Make sure you are aware of your surroundings and placement of the container.

To prevent almost all moisture and condensation buildup in a storage container, vents are recommended to be installed once you purchase your container. These vents will ensure airflow inside the container, just like your home if you have an attic. This will increase the lifespan of your container and help preserve the investment you put into purchasing a storage container.

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