Foam Prefabricated House

Foam prefabricated houses are constructed using foam materials such as Hairong modules (EPS modules) as their core, featuring characteristics like thermal insulation, structural stability, and efficient construction. However, there are issues to note, such as fire safety controversies and construction limitations.

Performance Advantages

1. Strong Thermal Insulation: The thermal conductivity of EPS module walls is as low as 0.030 w/m.k, significantly lower than the national standard of 0.60 w/m.k. In northern China during winter without heating equipment, indoor temperatures can reach 15-20℃, substantially reducing energy consumption.
2. Structural Stability: Modules are cast as a whole with reinforced concrete, resulting in wall strength seven times that of ordinary brick walls and an earthquake resistance of up to magnitude 8 standards, suitable for areas with complex geological conditions or frequent earthquakes.
3. Efficient Construction: Module assembly is similar to 'building blocks', eliminating the need for formwork erection and removal, saving on the cumbersome steps of traditional construction, and reducing overall costs compared to brick-and-mortar structures. Taking a three-story detached villa (covering an area of 130㎡ with a building area of 310㎡) as an example, the total cost of the rough house is approximately 250,000 yuan, with EPS module material costs accounting for about 110,000 yuan.
4. Diverse Functions: Modules are coated with a composite fireproof layer, achieving a fire rating of B1 (difficult to burn); their moisture-proof and salt-alkali resistant properties make them suitable for humid or saline-alkali areas, extending the building's service life.

Existing Controversies

1. Fire Safety Performance: Although modules enhance safety through composite fireproof layers, the inherent flammability of EPS materials is still questioned by some, necessitating strict quality control of the fireproof layer during construction.
2. Construction Limitations: Complex house designs (such as curved walls or irregular structures) pose significant construction challenges. The low hardness of modules makes them prone to deformation, requiring预留 reinforcement with steel bars, increasing technical requirements.
3. Decoration Limitations: The thin plaster layer on walls requires special treatment (such as adding keels) for later tile installation or hanging heavy objects; otherwise, they are prone to detachment.
4. Environmental Friendliness: Extensive use requires testing for the release of pollutants such as volatile organic compounds (VOCs) from materials. Limited testing capabilities in rural areas may pose health risks.

Application Scenarios

Foam prefabricated houses are suitable for simple house designs, low-temperature, or humid areas, such as self-built houses in northern rural areas and temporary housing. Strict quality control of materials (such as selecting modules with fire-resistant, sound-insulating, and heat-insulating functions) and construction specifications (such as steel bar reinforcement and fireproof layer treatment) is essential. Currently, there are brands on the market offering standardized products, and there are cases of rapid construction (such as individuals completing the main structure of a house with foam boards and plastering). However, complex projects still require professional teams for operation.