Is Prefabricated Structure for Houses Good or Not?

Prefabricated structures for houses have both advantages and disadvantages. It cannot be simply judged as absolutely good or bad; it needs to be weighed according to actual needs.

Advantages

• Fast construction speed: Factory-based production reduces material waste by about 30% and shortens the construction period by 50% - 70%. For example, in rural areas of Henan, the main assembly of a prefabricated house can be completed in as fast as two hours, and a 100-square-meter residential building can be finished in 1 - 2 months, while traditional brick-and-mortar structures take more than 6 months.
• Lower cost: Mass production reduces material costs by 20% - 40% and labor costs by about 60%. The construction cost of an ordinary prefabricated house is 1000 - 3000 yuan per square meter, far lower than that of traditional high-end residential buildings, which are over 5000 yuan per square meter. The main structure is about 30% cheaper than that of a brick house, and the later maintenance cost is 40% lower.
• Better quality: Prefabricated components are produced using high-precision molds in a standardized manner, improving the concrete strength. The seismic performance passes a simulated seven-magnitude earthquake test and can reach an eight-magnitude standard after using the reinforced concrete monolithic pouring process. The factory-prefabricated error does not exceed 2 millimeters, and the overall settlement is less than that of an ordinary house.
• Environmental protection and energy conservation: The use of recyclable materials reduces construction waste by 8%, and the material recycling rate reaches over 90%. Factory-based production reduces on-site pollution, and some high-end prefabricated residential buildings integrate energy-saving systems to reduce energy consumption. 80% of construction waste can be recycled, carbon emissions are halved, and some projects have obtained international certifications.
• High flexibility and mobility: The modular design allows for customized layouts and can be disassembled and reassembled, making it suitable for scenarios that require frequent relocation, such as tourist homestays and construction site dormitories.
• Guaranteed design life: The design life is generally 30 - 40 years and can reach 70 years with the use of new technologies.

Disadvantages

• Quality risks: When construction is not standardized, there is a 7% probability of foundation settlement or wall cracks within 5 years. Low-temperature construction is more prone to problems, and maintenance costs after 5 years may account for a quarter of the construction cost.
• Poor sound insulation and waterproofing: The sound insulation effect is 20 decibels worse, and the water leakage rate at the joints of prefabricated panels is nearly twice that of traditional buildings, requiring regular leak-proof treatment.
• Affected by cost factors: After the price increase of cement, a prefabricated house is only 5% cheaper than a traditional building, and the freight accounts for 5% of the cost when transported to remote areas.
• Design limitations: Currently, it can only be built up to two stories. The exterior facade may have a color difference of 15% - 20% after 5 years and requires frequent maintenance.
• Safety hazards: It has weak disaster resistance and a limited service life. Some construction units may leave hidden dangers during the construction process.