Container House Sun, Heat, and Fire Prevention

Container houses can achieve good sun, heat, and fire prevention performance through reasonable design and material selection. Details are as follows:

Sun and Heat Prevention

• Structural Design: The thermal performance of residential container houses depends on three key structural layers. The outer anti-corrosion color-coated steel plate can reflect sunlight and reduce heat absorption. The intermediate polyurethane foam layer, which is over 50mm thick, can effectively block heat conduction and slow down the transfer of heat to the interior. The inner fire-resistant gypsum board and moisture-proof film work together to control humidity and stabilize the indoor temperature. The national "Technical Standard for Steel Structure Integrated Houses" clearly requires that the heat transfer coefficient of the walls of residential containers should be ≤0.45W/(㎡·K), which is 1.8 times the thermal insulation efficiency of traditional brick-and-mortar walls. Actual measurements show that in summer, the temperature inside the container rises 22 minutes slower than the outdoor temperature at noon, and in winter, the indoor temperature only drops by 1.3℃ after being closed for 8 hours, providing a more stable body temperature sensation.
• Additional Design: Some container houses use sandwich panels with aluminum foil reflective layers, combined with adjustable sunshades and bottom ventilation slots, to further enhance sun and heat prevention effects. For example, a coffee shop in Moganshan uses such a design, and the interior remains relatively comfortable without air conditioning even under direct sunlight in the afternoon.

Fire Prevention

• Material Selection: Container houses should use A-grade fire-resistant materials such as rock wool boards and fire-resistant cotton as fillers to meet fire resistance limits and comply with fire safety conditions on construction sites. Avoid using flammable materials such as polystyrene and polyurethane foam, which burn rapidly, melt and deform at 80℃, and the dripping substances can cause more severe combustion. Moreover, the combustion products are highly toxic, making firefighting difficult and trapping occupants.
• Usage Regulations: During use, heat sources and fire sources should not be placed close to container houses, and open-flame operations should maintain a certain distance. Electrical wires and cables should be protected with sleeves, and sockets and switch boxes should use metal galvanized boxes and be installed openly. Simple firefighting equipment should be provided both inside and outside. Container houses should maintain a safety distance of at least 6 meters from each other.