How is the Quality of Prefabricated Panel Houses?

The overall quality of prefabricated panel houses has certain issues, but the specific quality needs to be comprehensively evaluated in combination with a housing safety appraisal report. The following is a detailed analysis from multiple aspects:

Insufficient seismic performance: Prefabricated panel houses have poor integrity. The connections between the panels and walls, as well as between the panels themselves, are not firm enough, and there are usually few solid steel bar connections. When subjected to horizontal forces such as earthquakes, the floor slabs and walls are prone to instant separation. Moreover, the collapse often occurs suddenly without any warning of cracks or time for deformation buffering, leaving residents with relatively few opportunities to escape. In earthquakes, the collapse of such houses is relatively severe, resulting in a high casualty rate.

Poor sound insulation and thermal insulation: Prefabricated panel houses perform poorly in terms of heat insulation and sound insulation. In summer, the indoor environment feels extremely hot; in winter, it is bitterly cold. At the same time, due to the poor sound insulation effect, the voices of neighbors can be clearly heard, which greatly affects the quality of life of residents.

Difficult to adjust the 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 of the house, making it difficult for residents to customize the living space according to their personal needs, lacking flexibility.

High risk of water seepage: Over time, the cement components of prefabricated panel houses are prone to cracks, and the gaps between the components also increase, which increases the risk of water seepage between the upper and lower floors, causing many troubles for residents.

Substandard materials: The steel bars in regular prefabricated panels are relatively thin, but many small workshops use thin steel wires instead of steel bars to reduce costs, and the concrete grades do not meet the standards and the thickness is insufficient. This kind of material has high brittleness and is prone to fracture. Unlike cast-in-place floor slabs which have toughness, it will instantly break when exceeding the load-bearing capacity without any warning.

Short service life: The designed service life of prefabricated panel houses is about 30 to 50 years. Most of them were built in the 1970s and 1980s, and many have approached or exceeded the predetermined service life, showing signs of aging.

However, the quality of a house cannot be judged solely based on its construction method. It also needs to refer to a professional housing safety appraisal report. Housing safety appraisals classify houses into four grades: A, B, C, and D. Some well-maintained prefabricated panel buildings may be rated as Grade B after appraisal; while some houses may be rated as Grade C due to unauthorized modifications to the load-bearing structure.