Common Problems of Prefabricated Houses

The common problems of prefabricated houses mainly include poor seismic performance, short service life, wall cracks and water leakage, poor thermal insulation, poor sound insulation, and limited decoration due to poor structural rigidity.

Poor Seismic Performance: Prefabricated houses are assembled from prefabricated panels, resulting in insufficient overall firmness and toughness. The steel reinforcement ratio often fails to meet high standards, leading to poor seismic performance. In earthquake-prone areas, strong earthquakes can cause wall cracking or even complete collapse, while minor vibrations can loosen floor joints, leading to an increase in cracks over time and ultimately threatening the structural safety of the house.

Short Service Life: Compared to traditional concrete buildings, the service life of prefabricated houses is significantly shorter, typically lasting only 20 to 30 years. Over time, problems such as wall cracks and ceiling water leakage gradually emerge, and structural stability declines. Many old prefabricated houses are identified as 'dangerous buildings', with high repair costs and difficulty.

Wall Cracks and Water Leakage: There are tiny gaps when assembling prefabricated panels, allowing rainwater to easily infiltrate during the rainy season, corroding steel reinforcement and causing wall cracks and ceiling water leakage. This issue not only affects living comfort but may also accelerate the aging of the house structure, creating a vicious cycle.

Poor Thermal Insulation, Cold in Winter and Hot in Summer: The thermal insulation performance of prefabricated houses is weak, and indoor temperatures are significantly affected by the outside environment in extreme weather. In winter, cold air easily infiltrates through wall gaps and around doors and windows, while in summer, insufficient insulation leads to stuffy indoor conditions, requiring additional equipment to regulate temperature and increasing energy consumption.

Poor Sound Insulation: The thickness of prefabricated panels is limited, and long circular holes are set in the middle, allowing sound to penetrate easily. Gaps between panels further exacerbate sound transmission. Noise from neighboring rooms can even be amplified after passing through the holes, making it almost impossible to effectively isolate sound and seriously affecting living privacy.

Poor Structural Rigidity and Limited Decoration: The walls of prefabricated houses often bear load-bearing functions, and random decoration may damage structural stability, posing safety hazards. For example, operations such as drilling holes or removing walls must strictly follow regulations, limiting the personalized renovation needs of residents.