Container House Insulation: Types, Features & Buying Tips

Container house insulation types mainly include EPS, PU, rock wool, and glass wool, featuring advanced insulation performance, multiple options, and energy-saving design characteristics. When purchasing, attention should be paid to certification, customization, and durability.

Insulation Types and Characteristics

1. Insulation Material Types
   Common insulation materials for container houses include EPS (expanded polystyrene foam), PU (polyurethane foam), rock wool (Rock Wool), and glass wool (Glass Wool). EPS and PU are foam materials; the former has lower cost but moderate insulation performance, while the latter has higher density and superior insulation effect. Rock wool and glass wool are inorganic fiber materials with Class A non-combustible characteristics. Rock wool has stronger high-temperature resistance, while glass wool is lighter and has excellent sound absorption performance.

2. Advanced Insulation Performance
   Taking the 2025 Flat Pack Container House as an example, it adopts a multi-layer composite insulation structure combined with high-density foam or rock wool core materials, effectively blocking heat conduction. For instance, the thermal conductivity of the PU insulation layer is as low as 0.022W/(m·K), maintaining stable indoor temperature in extreme climates and reducing energy consumption for air conditioning or heating.

3. Energy-Saving Design Optimization
   Some container houses are equipped with low-emissivity (Low-E) energy-saving glass panels, with a solar transmittance as low as 0.3, reflecting over 80% of infrared rays while allowing visible light to enter, enhancing natural lighting and reducing cooling costs. Additionally, double-wall structures further enhance insulation through air layers.

Buying Tips

1. Prioritize Certification Standards
   Choose products with CE certification to ensure materials comply with EU EN 13501-1 fire safety standards and EN 16069 insulation performance requirements. For example, rock wool insulation layers must achieve Class A1 non-combustibility, and PU foam must pass the Oxygen Index test with an oxygen index ≥26% to be considered flame-retardant.

2. Match Customization Needs
   Select insulation solutions based on usage scenarios:

• Cold regions: Prioritize PU or high-density rock wool with a recommended thickness of ≥50mm;
• Humid environments: Glass wool should be paired with moisture-proof aluminum foil layers to prevent performance degradation due to moisture absorption;
• Temporary structures: EPS is a cost-effective and easy-to-install option for short-term insulation.

3. Durability and Maintenance Costs
   Inspect the bonding process between the insulation layer and the container's steel structure, prioritizing products with mechanical fastening + adhesive double safeguards to prevent detachment due to long-term vibration. For example, PU foam must pass a -40℃ low-temperature bending test to ensure it does not crack in cold regions; rock wool must undergo hydrophobic treatment to prevent rainwater penetration affecting insulation performance.