How About the Thermal Insulation of Container Houses

Container houses can provide a certain degree of thermal insulation, but they have certain limitations compared to traditional buildings, and their thermal insulation performance is affected by multiple factors.

Material and Design Aspect: The metal shell of a container house has a certain degree of thermal insulation performance, which can prevent rapid heat transfer in and out from the outside world. Reasonable design can enhance the thermal insulation effect. For example, adding thermal insulation materials inside, such as rock wool boards, can reduce heat loss; using doors and windows with good airtightness can effectively prevent cold air from entering the room; and arranging indoor items reasonably to avoid forming air convection channels can keep the indoor temperature relatively stable.

Wall Panel Thickness and Low-Temperature Environment Aspect:

• Mild Cold Range (0℃ to 5℃): For a 50mm wall panel container, the temperature difference between the inside and outside is about 5℃ to 10℃. After closing the doors and windows, the indoor temperature can be maintained at 5℃ to 10℃. It feels a bit cool but not significantly cold. With an electric heater, it can meet the needs of temporary residence. A 75mm wall panel container has better thermal insulation performance, with the temperature difference between the inside and outside increasing to about 10℃ to 13℃. The temperature remains stable at 10℃ to 13℃, and no additional heating is required for short-term stays. A 150mm wall panel container can maintain the indoor temperature above 15℃. Relying only on sunlight and human body heat dissipation, it can enable comfortable daily activities, with a warm and non-stuffy feel.
• Severe Cold Range (-5℃ to -10℃): The shortcomings of a 50mm wall panel container become apparent, and it is only suitable for short-term storage of materials and not recommended for human residence. A 75mm wall panel container, when equipped with thermal-break aluminum double-glazed windows and sealing strips and installed with a small air conditioner or underfloor heating, can meet the needs of long-term stays. A 150mm wall panel container, with its thick thermal insulation layer, can ensure the comfort of occupants even without additional heating.
• Extreme Cold Range (-20℃ to -30℃): A 50mm wall panel container is completely unsuitable for human residence. A 75mm wall panel container needs to rely on high-power underfloor heating (with a power of not less than 80W/㎡) and whole-house sealing renovation, and also requires the installation of a roof snow-melting heating tape. A 150mm wall panel container, with its three-layer thermal insulation structure, can effectively block the penetration of cold air. When combined with an underfloor heating system and a fresh air dehumidification device, it can ensure occupant comfort.

Measures by Professional Companies: Some professional companies will use high-performance thermal insulation materials to wrap the containers and carry out the design and construction of thermal insulation layers inside. They also use high-quality sealing materials and techniques to improve airtightness. However, in cold regions, container houses may still require additional heating equipment for assistance, and their thermal insulation ability will face greater challenges in extremely cold weather.