Reasons for the Poor Quality of Prefabricated Houses

The reasons for the poor quality of prefabricated houses are mainly reflected in the following aspects:

Poor seismic performance is one of the significant drawbacks of prefabricated houses. Due to the use of prefabricated components for assembly, limited by early technological levels and material quality, the connections between prefabricated panels are not strong enough. The overall structure is prone to wall cracking or even complete collapse during earthquakes. For example, some prefabricated houses have experienced structural disintegration due to the failure of connection nodes during earthquakes, seriously threatening residential safety.

Inadequate sound and heat insulation stems from wall design flaws. The walls of prefabricated houses are relatively thin and filled with lightweight materials, resulting in poor sound insulation. Noise from upstairs and downstairs can easily interfere with each other. At the same time, the wall insulation performance is insufficient, making the indoor environment stuffy in summer and cold in winter, requiring additional energy consumption to maintain a comfortable temperature.

Insufficient structural stability and material durability are long-term hidden dangers. If the connections are not strong enough or the component quality does not meet standards during construction, cracks, deformations, or even collapse risks may occur after long-term use. In addition, due to the relatively low standards of early building materials, materials such as walls and pipelines are prone to aging and corrosion, leading to frequent problems such as water leakage and electrical short circuits, and shortening the service life of the house.

Ground water seepage issues are related to component characteristics. The building components of prefabricated houses are mostly cement-poured without steel reinforcement, which is prone to cracking over time. There are gaps at the joints of the components. If water accumulates upstairs or the roof joints crack, water seepage or leakage may occur indoors, affecting the living experience.

Unreasonable layout and low space utilization are limited by design concepts. Early prefabricated houses had a single house type and a rigid spatial layout. Many rooms had poor lighting and ventilation, with long corridors and small public spaces, making it difficult to meet the needs of modern families for living comfort and functionality.

Severe pipeline aging is a shortcoming of infrastructure. Most of the water, electricity, and gas pipelines in prefabricated houses have exceeded their designed service lives. The aging problem is prominent, posing fire safety hazards such as electric leakage and gas leakage, and requiring frequent maintenance and replacement.

Lack of community facilities further reduces the living quality. Old prefabricated house communities generally lack modern facilities such as elevators, parking spaces, and green spaces. Moreover, the fire exits are narrow and emergency evacuation is difficult, making it hard to meet the basic living needs of residents.