Is Container House Insulated?

Container houses are insulated. Their insulation performance is mainly achieved through the following aspects:

I. Enclosure Structure Materials
The core components of container houses are steel structural frames and enclosure panels. In traditional products, a combination of 0.8-millimeter-thick corrugated steel plates and 100-millimeter rock wool sandwich panels can meet basic insulation needs in environments as cold as -30°C. Rock wool, as the main insulation layer, directly affects thermal insulation performance based on its density and thickness. For example, an 80 to 100-millimeter-thick rock wool layer can significantly reduce heat conduction. Some companies use high-density polyurethane or composite sandwich panels to further optimize insulation performance, enabling the house to maintain indoor comfort through auxiliary heating equipment in extreme cold conditions.

II. Multi-Layer Construction Design
For cold northern climates, houses generally adopt a three-layer construction:

1. Outer Layer: 0.6-millimeter-thick galvanized plates or weather-resistant steel to resist wind and sand erosion and reduce heat loss;
2. Middle Layer: Filled with insulation materials such as rock wool and polyurethane to form the main thermal insulation layer;
3. Inner Layer: Uses PVC-coated steel plates, moisture-proof aluminum foil, or thermal-break insulation doors and windows to reduce heat radiation and prevent condensation.
   Some designs also add an elevated layer at the bottom of the container to block ground cold bridge conduction, reducing indoor temperature fluctuations by about 40% compared to traditional color steel plate houses.

III. Sealing and Moisture-Proof Techniques
The splicing process and overall airtightness are crucial for insulation effectiveness. Excellent companies use techniques such as high weather-resistant polyester resin coatings and moisture-proof aluminum foil layers to reduce the probability of condensation on the inner walls of the container. Sealing strips for doors and windows, airtight treatment of seams, and corner sealing techniques can avoid cold bridge effects and ensure the effectiveness of the insulation layer. For example, Zhongye Zhichuang has upgraded its insulation system for the northern market, filling walls, roofs, and floors with high-density materials and providing matching thermal-break doors and windows to achieve dual goals of winter cold protection and summer moisture prevention.

IV. Performance Verification and Standards
The insulation performance of container houses needs to be verified in actual scenarios. For example, Qingdao Jiecheng Hongye's refrigerated containers adopt shipboard standards, with insulation layers tested in maritime environments and supporting rapid power-on with 380-volt three-phase electricity. Additionally, the insulation performance of a 100-millimeter composite wall can rival that of a 610-millimeter-thick traditional brick-concrete structure wall, significantly reducing energy consumption.