Residential Container House Insulation

For the insulation of residential container houses, it is essential to focus on the sandwich material, wall structure optimization, and detail handling. The specific measures are as follows:

1. Selection of Sandwich Material and Thickness

The sandwich panel is the core material for the insulation of container houses, and its material and thickness directly affect the thermal insulation performance. It is recommended to use materials with low thermal conductivity such as rock wool and polyurethane, and avoid choosing ordinary foam panels or thin panels. For example, the color-steel sandwich panel (model 0.23) used by Wenzhou Tongfu Portable Houses is filled with Class A fire-resistant rock wool, which can reduce the indoor temperature in summer and minimize cold air infiltration in winter. The national standard requires that the heat transfer coefficient of the walls of residential containers should be ≤ 0.45 W/(㎡·K), which is 1.8 times the insulation efficiency of traditional brick-and-mortar walls. In actual tests, the temperature rise inside the container in summer is 22 minutes slower than that outside, and the indoor temperature only drops by 1.3℃ after being closed for 8 hours in winter.

2. Wall Structure Optimization

For extreme climates, it is necessary to upgrade the wall structure. In northern regions, high-density insulation materials need to be filled. For example, in the low-temperature container house solution provided by Zhongye Zhichuang, the walls, roof, and floor all adopt thickened insulation layers, and are equipped with thermal-break insulation doors and windows to reduce heat loss. Qinghai Guangzan Light Steel House Engineering Co., Ltd. achieves insulation effects comparable to buildings by thickening the insulation materials in container houses, while emphasizing the auxiliary role of temperature control equipment such as air conditioners. In addition, a three-layer structure consisting of an outer corrosion-resistant color-steel plate that reflects sunlight, a middle polyurethane foam layer that blocks heat conduction, and an inner fire-resistant gypsum board that helps control humidity can significantly improve the thermal performance.

3. Detail Handling and Auxiliary Measures

1. Door and Window Sealing: Use double-glazed or triple-glazed windows and install sealing strips around the edges to prevent heat leakage.
2. Moisture-Proof Treatment: Lay moisture-proof membranes inside the walls to prevent condensation and mold, especially in high-humidity areas.
3. Temperature Control Equipment: Install air conditioners, graphene floor heating systems, or entrance air curtains to quickly adjust the indoor temperature.
4. Shading and Ventilation: Install adjustable shading canopies and bottom ventilation slots to reduce the impact of direct sunlight. For example, a café in Mogan Mountain achieves a comfortable experience without air conditioning in summer through the use of aluminum foil reflective layer sandwich panels and ventilation design.

4. Customized Solutions

Adjust the insulation strategy according to the regional climate. In northern regions during winter, communicate the minimum temperature in advance and customize thickened insulation layers and cold-proof doors and windows; in southern regions during summer, increase shading and ventilation designs to avoid overheating inside the container. The insulation construction is completed before the container leaves the factory, and no additional modifications are required after on-site installation, ensuring efficiency and quality.