You may have opened a container to find damp boxes or rusted machinery, even though it was sealed the entire time. That’s container condensation, a common but preventable problem in logistics.

Why Condensation Happens?

It begins with temperature fluctuation. When a container moves from a warm, humid area (like Malaysia) to a cooler environment, the air inside cools faster than the walls can adjust. As the temperature drops below the dew point, moisture in the air condenses on the container’s ceiling and walls which forming droplets that fall onto the cargo.

This phenomenon is often called “container rain.” It can damage goods, stain packaging, or corrode metals even within days.

How to Stop Container Condensation:

• Control Humidity at Loading:
  Ensure goods are completely dry. Wet pallets or packaging release moisture during transit.
• Install Desiccant Bars or Bags:
  These absorb water vapor before it can condense. For long voyages, use desiccants with high absorption capacity.
• Avoid Temperature Shock:
  Where possible, avoid loading hot cargo into cool containers or vice versa.
• Use Thermal Liners:
  Insulated container liners help stabilize internal temperature.

Why Prevention Matters?

Moisture damage not only leads to product loss, it can also cause shipment rejections, claim disputes, and brand image issues. With proper moisture control, businesses can ensure quality upon arrival.