Rain Protection Effect of Container Houses
The overall rain protection effect of container houses is good, but it is influenced by multiple factors such as design, materials, construction, and usage environment.
Design Aspect: Modern container houses have broken through traditional perceptions, adopting modular designs and enhancing rain protection performance through professional modifications. For example, the roof is designed with a reasonable drainage slope to ensure rapid water diversion; the panels are overlapped in the direction of water flow to prevent water accumulation and penetration; and the joints are sealed with waterproof membranes and sealants to form a continuous seal, reducing the risk of leakage from the source.
Material Selection: High-strength base materials undergo multiple processing steps, significantly enhancing rain protection capabilities. The outer shell is made of weather-resistant galvanized sheets or PVC-coated steel plates, which resist wind and sand erosion and reduce heat radiation; the middle is filled with 80-100 mm thick rock wool as the main insulation layer, providing both thermal insulation and waterproofing functions; and the roof reinforcement panels reduce the probability of damage from external impacts, extending the service life.
Construction Techniques: Proper construction techniques are crucial for rain protection. For example, at joints between panels, window and door openings, and other areas prone to leakage, measures such as full sealing with sealants, adding structural purlins, and increasing the density of self-tapping screws are taken to ensure tightness; in rainy southern regions or island environments, the waterproofing techniques for roof and corner closures need to be strengthened, such as adopting double-layer sealing designs to further enhance rain protection effects.
Usage Environment: Under extreme weather conditions, the rain protection capabilities of container houses may be limited. For example, during the Nagoya Asian Games, the container temporary accommodation area experienced leakage and had to evacuate personnel due to its low-lying location and an unprecedented heavy rainstorm. This indicates that while container houses can meet rain protection needs in daily environments, their protective capabilities still have shortcomings when facing once-in-a-century natural disasters. Therefore, when selecting a site, low-lying areas should be avoided, and regular inspections and maintenance should be conducted to ensure the drainage system is unobstructed and the sealant strips are intact, in order to cope with sudden weather changes.
