How to Insulate Container Houses

Insulating container houses can be achieved by optimizing the structure, selecting materials, improving design, and adding temperature control equipment. Here are the specific methods:

I. Optimize the Three Key Layers
The thermal performance of container houses depends on the synergy of the outer, middle, and inner layers. The outer layer uses anti-corrosion color-coated steel plates, which can reflect most of the sunlight and reduce heat absorption. The middle layer employs a polyurethane foam layer over 50mm thick, which has a low thermal conductivity and effectively blocks heat conduction. The inner layer uses fire-resistant gypsum boards combined with moisture-proof membranes to control humidity and stabilize temperature. This structure results in a wall heat transfer coefficient of ≤0.45W/(㎡·K), with an insulation efficiency 1.8 times that of traditional brick-and-mortar walls. In actual tests, the cabin temperature rises 22 minutes slower than the outdoor temperature in summer, and the indoor temperature drops by only 1.3℃ after being closed for 8 hours in winter, providing a more stable and comfortable environment.

II. Select High-Efficiency Insulation Materials
Common materials include polystyrene boards, polyurethane foam boards, and rock wool boards. For example, new materials with black steel plates filled with polystyrene foam or increased foam thickness can enhance insulation effects. Rock wool boards not only provide insulation but also have fire-resistant properties. The joints and connections of materials should be treated with sealing materials to prevent heat leakage and ensure a stable bond between the insulation layer and the container structure.

III. Improve Door and Window Design
Doors and windows are the main channels for heat loss. Using double or triple-glazed windows can reduce thermal conductivity, and adding sealing strips around the edges minimizes air infiltration. For example, triple-glazed windows have better insulation performance than brick walls. When combined with roof eaves or balcony sunshades, they can prevent sun exposure in summer and reduce heat loss in winter.

IV. Add Temperature Control Equipment
In extreme climates, auxiliary equipment such as air conditioners and graphene floor heating can be used to regulate temperature. For example, a café in Mogan Mountain uses sandwich panels with aluminum foil reflective layers, paired with adjustable sunshades and bottom ventilation slots, ensuring indoor comfort even without air conditioning.