Thermal Insulation for Exterior Walls of Container Houses

Thermal insulation for the exterior walls of container houses can be achieved by selecting appropriate materials, adding insulation layers, optimizing structural design, and paying attention to detail handling.

I. Selecting Appropriate Thermal Insulation Materials Commonly used materials include polystyrene boards, polyurethane foam boards, rock wool boards, expanded polystyrene (EPS) boards, vacuum insulation panels (VIPs), and phenolic foam boards. These materials have low thermal conductivity and can effectively block heat transfer. For example, EPS boards are lightweight, with a thermal conductivity of approximately 0.033 - 0.038 W/(m·K), inexpensive, and easy to install, but they are flammable and require flame retardants; polyurethane foam has even lower thermal conductivity (about 0.022 - 0.028 W/(m·K)), can be foamed on-site for seamless filling, is waterproof and corrosion-resistant, suitable for high-insulation or humid environments, but is more costly; rock wool boards have a Class A fire rating, with a thermal conductivity of approximately 0.040 - 0.045 W/(m·K), good chemical stability, suitable for places with high fire safety requirements, but require proper waterproofing.

II. Adding Thermal Insulation Layers Install external insulation layers on the exterior walls of container houses to form a thermal barrier and reduce heat transfer. For example, insulation boards can be fixed to the outer side of metal walls and then covered with protective layers (such as metal sheets or decorative panels), which not only enhance thermal insulation performance but also protect the insulation materials from external environmental erosion.

III. Optimizing Structural Design Reduce heat loss through designed thermal insulation structures:

1. Insulation at Connection Points and Corners: In areas prone to thermal bridging, such as container joints and corners, use thermal break designs or fill with insulation materials to block heat conduction paths.
2. Window and Door Installation Isolation: Leave gaps between window and door frames and walls, fill with expanding foam or insulation cotton to reduce the infiltration of hot and cold air.
3. Gap Sealing: Seal holes and gaps on the surface of container houses to prevent heat loss through air convection.

IV. Paying Attention to Detail Handling

1. Sealing at Joints and Connection Points: Seal the joints between insulation materials and the connection points between insulation layers and container structures with sealant or specialized tape to prevent heat leakage.
2. Structural Stability: Use a combination of mechanical fastening (such as rivets or bolts) and bonding to ensure tight adhesion between the insulation layer and the wall, preventing detachment due to vibration or temperature differences.
3. Waterproofing: Install a waterproof layer (such as waterproof membranes or coatings) on the outer side of the insulation layer to prevent rainwater infiltration from affecting thermal insulation performance, especially important for materials with high water absorption (such as rock wool boards).