Thermal Insulation Inside Container Houses

Thermal insulation inside container houses can be achieved by selecting appropriate materials, adding insulation layers, optimizing window and door designs, and paying attention to detail handling.

I. Selecting Appropriate Thermal Insulation Materials
Thermal insulation materials are the core of thermal insulation in container houses. Common materials include polystyrene boards, polyurethane foam boards, and rock wool boards, all of which feature low thermal conductivity and excellent insulation performance. For example, polystyrene boards (EPS) are cost-effective and suitable for general climate regions; polyurethane foam boards (PU) have a high closed-cell ratio and outstanding waterproof performance, making them ideal for humid environments; rock wool boards offer Class A fire resistance, enhancing safety. Material selection should consider local climate, budget, and fire safety requirements.

II. Adding Thermal Insulation Layers
Adding insulation layers to the inner walls of container houses is a direct and effective insulation method. Insulation boards can be directly adhered to the walls to form a continuous thermal barrier. Alternatively, the "embedded insulation within walls + double-layer gypsum board facing" technique can be used, where materials like rock wool or glass wool are filled between the steel walls of the container and the interior finish, followed by covering with gypsum boards. This approach improves insulation and enhances structural stability. During construction, attention should be paid to the thickness of the insulation layer (typically 50-100mm) to avoid insufficient thickness affecting performance.

III. Optimizing Window and Door Designs
Windows and doors are major channels for heat loss. Double or triple-glazed windows with inert gas layers between panes should be prioritized to significantly reduce thermal conductivity. Window frames should be made of thermal-break aluminum alloy or PVC to minimize thermal bridging. Additionally, installing weatherstripping (such as EPDM rubber strips) around windows and doors can effectively block air infiltration and reduce convective heat transfer. For frequently used doors, adding vestibules or double-door designs can further reduce heat leakage.

IV. Paying Attention to Detail Handling in the Thermal Insulation System
The airtightness of the insulation system directly affects overall performance. Joints between insulation materials should be sealed with specialized tape or expanding foam to prevent air leakage. The connection points between the insulation layer and the container's steel structure should be filled with elastic sealant to prevent cracking due to metal expansion and contraction. Additionally, the continuity of insulation in hidden areas such as roofs and floors should be checked to ensure no gaps are left. For example, XPS extruded polystyrene boards can be used for roof insulation, while insulation layers can be added beneath floors to create a comprehensive thermal insulation system.