Disadvantages of Concrete Prefabricated Houses

The disadvantages of concrete prefabricated houses (prefabricated panel houses) are mainly reflected in the following aspects:

Insufficient seismic performance: Prefabricated panel houses have poor integrity, and the connections between panels and between panels and walls are not strong enough, similar to houses built with building blocks. In the event of an earthquake, the floor slabs and walls are prone to instant separation, and the collapse process is sudden without crack warnings or deformation buffers, leading to severe collapses and high casualty rates.

Poor sound insulation and thermal insulation: Prefabricated panel houses perform poorly in terms of thermal and sound insulation. In summer, the interior is unbearably hot; in winter, it is extremely cold. At the same time, due to the insufficient sound insulation performance of the walls and floor slabs, residents can clearly hear the sounds from their neighbors, seriously affecting the quality of life.

Difficult to adjust the internal structure: Unlike modern commercial houses, prefabricated panel houses almost do not allow large-scale structural modifications. Every wall may be related to the stability of the overall structure, so it is difficult for residents to customize or adjust the living space according to their personal needs.

High risk of water seepage: Over time, cracks may appear in the cement components, and the gaps between components may also increase, thereby increasing the risk of water seepage between floors. This not only affects the living environment but may also cause further damage to the house structure.

Short service life: The designed service life of prefabricated panel houses is about 30 to 50 years. Many houses were built in the 1970s to 1990s and are now approaching or exceeding their intended service lives, showing obvious signs of aging.

Vulnerable connection points: There is only simple overlapping between the prefabricated panels and the walls, and simple filling between the panels, lacking reinforcement measures such as ring beams and structural columns. The whole house has no rigid framework. When the foundation settles or the walls crack, the panels are prone to misalignment and loosening. Over time, the connection points weather, the steel bars rust, the strength decreases, and it is easy to trigger a chain collapse.

Substandard materials: Some prefabricated panel houses have the problem of substandard materials. The steel bars in regular prefabricated panels are relatively thin, while small workshops may use thin steel wires instead of steel bars, and the concrete grades do not meet the standards and the thickness is insufficient. This kind of material is brittle and prone to fracture. When the load exceeds the capacity, it will break instantly without warning.