Rain Leakage from Container House Windows

Rain leakage from container house windows can be caused by various factors and requires troubleshooting based on the actual situation.

I. Installation and Construction Issues

1. Loose or Aged Fasteners: During the installation or use of container houses, if the roof is stepped on, causing fasteners to loosen, or if the waterproof gasket ages, it may lead to water leakage at the fastener locations. Regularly inspect the condition of roof fasteners, promptly replace aged components, and re-secure them.
2. Unqualified or Improperly Handled Waterproof Materials: If the waterproof materials selected during construction are of substandard quality or if the waterproof layer is not applied properly (e.g., uneven coating, insufficient thickness), it can result in leakage as the house ages. Use waterproof materials that meet standards and follow construction specifications strictly.
3. Cracks Around Openings: When installing equipment such as fans or exhaust pipes on the house panels, if the cracks around the openings are not properly sealed, or if the panels deform due to thermal expansion and contraction or wind and snow loads, the original waterproof layer can be damaged. After making openings, use sealant or waterproof membranes to seal the gaps and regularly inspect the house for structural deformation.

II. Structural Design Defects of the House

1. Inadequate Drainage System: If the gutter has no horizontal slope, the outlet is poorly designed, or the gutter's anti-corrosion treatment is insufficient, leading to rust and blockage, rainwater may not drain properly during heavy rain and could back up into the house. Clear debris from the gutter, repair rusted areas, and adjust the gutter's slope to ensure smooth drainage.
2. Location Risks: If the container house is located in a low-lying area (e.g., the case of the Nagoya Asian Games), it is vulnerable to flooding during the flood season, causing rainwater to back up. Avoid building houses in low-lying areas or reduce risks by elevating the foundation and adding water-blocking facilities.

III. Impact of Extreme Weather

1. Excessive Rainfall Intensity: For example, the 1-hour rainfall of 104.5 mm in Nagoya may exceed the rainproof design capacity of container houses, leading to water infiltration. Stay informed about weather warnings in advance and move to a safe area before extreme weather events.
2. Strong Winds Blowing Off the Roof: If the house's wind resistance rating is insufficient (e.g., the case in Haiyan, Zhejiang, where a container rated for 'wind resistance level 10' was blown apart by level 8 winds), strong winds can blow off the roof or crack the seams, causing rain leakage. Choose a house structure that meets local wind pressure standards and reinforce the house in open areas.