Leakage Issues in Activity Container Houses

Leakage issues in activity container houses can be effectively resolved through targeted measures.

The problem of leakage in activity container houses was particularly prominent during the Nagoya Asian Games. On September 8, 2026, when Nagoya experienced rare heavy rainfall, approximately 400 athletes and staff members were urgently evacuated due to leakage in wooden container houses, and some venues also experienced seepage. Additionally, videos released by members of the South Korean men's basketball team showed issues such as leakage from sink pipes and water accumulation on the floor in container-style cabins, further confirming the waterproofing defects of such houses.

Common Causes of Leakage
The core issue of leakage in container houses usually stems from defects in the waterproofing process during the production stage. Specific manifestations include:

1. Inadequate waterproofing at key areas: The roof and seams are high-risk areas for leakage, especially positions such as roof welds, box body joints, and around doors and windows. If professional waterproofing materials or techniques are not used, leakage channels can easily form.
2. Unreasonable drainage design: Insufficient roof slope can lead to water accumulation, increasing the risk of leakage. For example, flat or low-slope designs are prone to backflow due to poor drainage during heavy rainfall.
3. Poor weather resistance of materials: If ordinary sealants or waterproofing membranes are used, long-term exposure to ultraviolet rays, temperature variations, and other environmental factors can cause the materials to age and crack, losing their waterproofing function.

Preventive and Resolution Measures
To address the above issues, it is necessary to control the entire process from design, production, acceptance, to maintenance:

1. Optimize waterproofing design during the customization stage: Adopt a multi-layer waterproofing process, such as laying waterproofing membranes on the roof and then applying weather-resistant waterproofing coatings to form double protection; use high-elasticity sealants to fill seams and cover them with waterproofing tape.
2. Optimize the drainage system: Design the roof slope according to local rainfall (generally recommended to be ≥5%) to ensure rapid drainage of rainwater; add gutters or drainage pipes to prevent water accumulation.
3. Strict factory testing: Simulate heavy rainfall conditions through water spray tests to inspect the waterproofing effectiveness of the roof, seams, and other areas, and promptly repair any leakage points.
4. Regular maintenance and inspections: Check the sealing status of seams every six months during use, replace aging materials, and clean drainage pipes to prevent blockages that can lead to water accumulation.

Through scientific design and standardized maintenance, leakage issues in container houses can be significantly reduced, thereby ensuring their reliability as temporary living or functional spaces.