Does a Container House Leak?

Container houses may leak under specific circumstances, as analyzed below:

Leakage Cases in Real Scenarios

During the Nagoya Asian Games, due to the strongest rainfall ever recorded locally, some container houses experienced leakage. Approximately 400 athletes and staff living in wooden container houses in the Minato Ward of Nagoya City were required to evacuate to safe areas, indicating that under extreme weather conditions, the waterproof performance of container houses may not meet requirements, posing a risk of leakage.

Common Causes of Leakage in Container Houses

• Fastener Issues: During installation and use, if the roof is stepped on, causing fasteners to loosen, or if the waterproof pads of fasteners age, leakage may occur at the fastener locations.
• Waterproof Materials and Treatment: During the construction of mobile houses, if substandard waterproof materials are selected or if the waterproof treatment is unreasonable, leakage problems are likely to arise as the container mobile houses age.
• Openings and Cracks: When openings are made on the panels of mobile houses for the installation of equipment such as fans and exhaust pipes, if the waterproof treatment around the cracks is inadequate; during use, due to external conditions, wind loads, snow loads, thermal expansion and contraction, and other factors, the panels of mobile houses may deform, causing the cracks at the joints to expand and damage the original waterproof treatment, leading to leakage.
• Gutter Design: If the gutters of mobile houses have no horizontal slope and the gutter outlets are designed unreasonably, when it rains heavily, the accumulated water in the gutters cannot be discharged and will flow back into the inner eaves troughs; if the gutter corrosion prevention is not adequate during the construction of mobile houses, causing the gutters to rust and erode, or if debris blocks the outlets, leakage or backflow may also occur.

Improved Waterproof Performance of Container Houses

With technological advancements, some innovative products, such as packing-box units, adopt an integrated top-and-bottom welding structure, fundamentally solving the technical problem of easy leakage in traditional assembled containers. Through the design of an built-in drainage system, accumulated water can be effectively guided and discharged through the built-in water troughs, ensuring that the interior remains dry on rainy days.