What Are the Drawbacks of Prefabricated Houses?

Prefabricated houses have the following drawbacks:

Insufficient seismic resistance: Prefabricated houses mainly rely on cement for construction. Although a certain amount of steel bars are added, their overall seismic resistance cannot be compared with that of modern buildings. The structural strength of these houses is low, as they are assembled from individual prefabricated panels, lacking firmness and toughness. The prefabricated panels often adopt a hollow design, and the quantity and distribution of steel bars are not as scientific and reasonable as those in cast-in-place houses. When facing earthquake disasters, they simply cannot withstand the impact. Even slight vibrations can loosen the joints between floor panels. Over time, the number and size of cracks in the house increase, and in severe cases, the entire building may collapse. When confronted with natural disasters such as earthquakes or floods, the safety precautions are clearly inadequate.

Poor sound insulation and thermal insulation: Prefabricated houses perform poorly in terms of heat insulation and sound insulation. The walls are as thin as paper. In winter, cold air seeps in through the gaps in the walls and the edges of doors and windows. Even when sleeping with thick quilts at night, one still feels cold. In summer, when the outdoor temperature soars, the indoor temperature is also high. At the same time, one can clearly hear the voices of neighbors, seriously affecting the quality of life.

Difficult to adjust the internal structure: Unlike modern commercial housing, prefabricated houses hardly allow for large-scale modifications. Every wall may be related to the overall structure, making it difficult for residents to customize the living space according to their personal needs, thus limiting the flexibility and personalization of living.

Risk of water seepage: Over time, cracks appear in the cement components, and the gaps between the components increase, raising the risk of water seepage between the upper and lower floors. If the joints are not properly treated, water seepage will persist, causing headaches whether it is on the roof or the walls, and affecting the normal use and living experience of the house.

Short service life: The designed service life of prefabricated houses is about 30 to 50 years. Most of them were built in the 1970s and 1980s, and many have approached or exceeded their intended service lives, showing signs of aging. Generally, they become dilapidated after 50 years, and the service life of prefabricated panel houses is even shorter, possibly 30 years or even 20 years. As time goes by, problems will emerge one after another, such as wall cracks, ceiling water seepage, and the originally relatively firm structure becoming shaky. Many old prefabricated panel houses have been identified as "dangerous buildings".