Container House Unfinished

Container house unfinished typically refers to container houses that have only completed the basic structure and external construction, without interior decoration. Its core characteristics include a high degree of prefabrication, the need for thermal performance compensation, clear spatial functional zoning, and mobility. The following is an analysis from four dimensions: structure, performance, function, and cost.

1. High degree of structural prefabrication with minimal construction errors
The main structure of a container house unfinished is prefabricated in a factory, using a combination of galvanized steel frames and rock wool sandwich panels. The walls, roof, and floor are integrated into rigid units. For example, the products of Baotou Xinxing Color Plate Steel Structure Manufacturing Co., Ltd. use a fully prefabricated approach, reducing on-site installation to lifting and joint treatment. Construction errors are reduced from the centimeter level in traditional houses to the millimeter level. This standardized production results in higher squareness of the space, improved matching of door and window openings with pipeline interfaces, and reduced need for later modifications.

2. Thermal performance relies on multi-layer construction for compensation
Due to the high thermal conductivity of metal containers, unfinished houses require a three-layer construction to improve thermal performance: an outer layer of 0.6-millimeter-thick galvanized sheet to resist wind and sand, a middle layer filled with 80-100 millimeters of rock wool as the main insulation layer, and an inner layer of PVC-coated steel sheet to reduce thermal radiation. Some companies also add an elevated layer at the bottom of the container to block ground cold bridge conduction. For example, the products of Huhehaote Residential Container House Company reduce indoor temperature fluctuations by about 40% compared to traditional color steel plate houses through this construction. However, attention must be paid to the airtightness treatment of door and window sealing strips and joints to prevent local condensation.

3. Spatial functional zoning logic differs significantly from traditional residences
The fixed size of the container (commonly 3 meters × 6 meters) forces the design to adopt a functional overlay strategy: the kitchen and bathroom are compressed to one end of the container to form a wet area, using integrated bathroom technology for waterproofing; the living and sleeping areas achieve day-night functional switching through furniture variability, such as wall-mounted folding tables that can be stored against the wall during non-meal times and drop-down beds that can be folded up to release activity space. This zoning method requires residents to systematically plan item storage; otherwise, the actual usable area may shrink by more than 20%.

4. Low relocation and resettlement costs, but attention must be paid to structural fatigue
The single lifting and transportation cost of a container house unfinished is approximately 15-25 yuan per kilometer. After arriving at the new site, it only needs to be connected to water and electricity for use. The low migration cost has given rise to a "mobile living" model. However, after multiple disassemblies and assemblies, the connecting bolts of the container are prone to fatigue and wear. When the number of disassemblies and assemblies exceeds 5 times, the risk of structural deformation increases by about 15%, requiring regular inspection and replacement of bolts.