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Yes. A well-designed and professionally manufactured container house can provide reliable waterproof performance. The roof, wall joints, doors, windows, and connection points are designed with waterproof sealing and drainage systems to prevent rainwater from entering the house. Proper installation is also important, especially for roof drainage and joint sealing. With quality materials and correct installation, a container house can remain dry and comfortable even in rainy and humid climates.

The service life of a container house depends on the steel structure, anti-corrosion treatment, insulation materials, installation quality, climate, and regular maintenance. High-quality prefab container houses using galvanized steel structures and durable wall panels can typically provide many years of service, with some manufacturers reporting service lives of 15–30 years or longer under proper maintenance. Regular inspection of the steel structure, roof, sealants, and drainage system can help extend the building’s service life.

Not necessarily. Although steel conducts heat more easily than traditional building materials, a properly designed container house can achieve good thermal performance through high-quality insulation panels, sealed joints, ventilation, and suitable roof and wall systems. Depending on the local climate, insulation materials such as EPS, PU, PIR, or rock wool can be selected to improve indoor comfort and energy efficiency.