Building Materials for Container Houses

Building materials for container houses mainly include four categories: steel structural frames, wall materials, flooring materials, and auxiliary materials. The characteristics and uses of each material are as follows:

Steel structural frames are the core load-bearing structures of container houses, typically using the same C-shaped steel or weathering steel as port containers. These steels are alloyed with trace elements such as phosphorus, copper, chromium, and nickel during smelting, gradually forming a dense, dark brown oxide layer on the surface. This oxide layer effectively isolates air and moisture, preventing further corrosion of the internal metal, making it particularly suitable for environments with high humidity and salt content, such as coastal and riverside areas. Its strength and durability ensure the overall stability of the house, enabling it to withstand external impacts during long-term use.

Wall materials are categorized into insulation, fire resistance, and structural support based on functional requirements:

• Rock wool sandwich panels use rock wool as the core material, achieving a Class A (non-combustible) fire rating, but are relatively expensive and commonly used in areas with strict fire safety requirements.
• Polyurethane panels have polyurethane foam as the core material, offering excellent thermal insulation but being flammable, requiring the use of fire-resistant coatings, suitable for low-temperature environments.
• Glass wool panels have better fire resistance than polyurethane panels and are moderately priced, but they are prone to deformation when exposed to moisture and should be avoided in humid environments for extended periods.
• Outer-layer color-coated steel sheets serve as a protective layer, covering the exterior of sandwich panels to prevent damage to the core material and enhance aesthetics.
• Plywood or magnesium oxide boards are used for interior wall cladding in the container, providing both moisture and thermal insulation as well as a base layer for electrical installations and item hanging.

Flooring materials need to balance load-bearing capacity and comfort:

• Anti-static floors feature a conductive surface layer that quickly dissipates static electricity, offering a comfortable foot feel, suitable for areas with dense electronic equipment.
• High-strength bamboo-wood composite floors combine the elasticity of wood with the compressive strength of bamboo, capable of withstanding the碾压 (crushing) of forklifts weighing several tons, suitable for industrial or warehousing applications.

Auxiliary materials enhance house performance through detailed optimizations:

• Thermal insulation cotton is filled inside sandwich panels, with rock wool types offering outstanding fire resistance and polyurethane foam types providing better thermal insulation, requiring selection based on needs.
• Sealing strips are often made of ethylene propylene diene monomer (EPDM) rubber, capable of withstanding temperature variations from -50°C to 150°C, preventing rainwater leakage and air infiltration.
• Coatings for the exterior facade use highly weather-resistant polyester powder coatings, with adhesion and UV resistance far exceeding traditional paint films, extending the service life of the steel structure.

Through scientific combination, these materials enable container houses to be lightweight, modular, and durable, meeting diverse needs such as residential, office, or temporary facility applications.