Are Prefabricated Panel Houses of Poor Quality?
Prefabricated panel houses have certain quality issues, and their overall quality is relatively inferior to that of modern buildings, mainly reflected in the following aspects:
Insufficient Seismic Performance: Prefabricated panel houses mainly rely on cement for construction. Although a certain amount of steel bars are added, their overall seismic capacity is far inferior to that of modern buildings. In the face of natural disasters such as earthquakes, their safety precautions are significantly inadequate. During an earthquake, prefabricated panel houses have poor integrity, with floor slabs and walls easily separating instantly, and entire panels falling directly, leaving little chance for escape. They are among the building types with the most severe collapses and the highest casualty rates.
Poor Sound Insulation and Thermal Insulation: Many residents report that prefabricated panel houses are hot in summer and cold in winter, and they can clearly hear their neighbors' voices, seriously affecting their quality of life. The prefabricated floor slabs used in rural self-built houses are generally about 12 centimeters thick. Although they are hollow, their thermal insulation is poor, resulting in high indoor temperatures in summer and low indoor temperatures in winter.
Difficult to Adjust Internal Structure: Unlike modern commercial houses, prefabricated panel houses almost do not allow large-scale modifications. Every wall may be related to the overall structure, making it difficult for residents to customize their living space according to personal needs, limiting the flexibility and comfort of living.
High Risk of Water Seepage: Over time, cement components are prone to cracks, and the gaps between components increase, raising the risk of water seepage between floors. The use of prefabricated panels as roofs in rural areas is common, and leakage is widespread. Even with waterproofing measures, 100% leak-proofing cannot be guaranteed.
Short Service Life: The design life of prefabricated panel houses is about 30 to 50 years. Most of them were built between the 1970s and 1990s, and many have approached or exceeded their intended service life, showing signs of aging, which further affects the quality and safety of the houses.
Vulnerable Connection Points: Prefabricated panels are simply overlapped with walls, and the gaps between panels are simply filled without ring beams or structural columns, leaving the entire house without a rigid framework. When the foundation settles or walls crack, the panels are prone to misalignment and loosening, and the connection points are prone to weathering and steel bar rusting, reducing strength.
Substandard Materials and Shoddy Workmanship: The steel bars in regular prefabricated panels are already thin, but many small workshops use thin steel wires instead of steel bars to make more money. The concrete grade does not meet standards, and the thickness is insufficient, resulting in poor-quality prefabricated panels with obvious brittle failure characteristics. Once the load exceeds the capacity, they will break instantly without any warning.
