What Are the Disadvantages of Prefabricated Houses?

The disadvantages of prefabricated houses are mainly reflected in the following aspects:

Insufficient seismic performance: Prefabricated houses mostly rely on cement construction. Although a certain amount of steel bars are added, their overall seismic capacity is far inferior to that of modern buildings. They are assembled from prefabricated panels, lacking firmness and toughness in their structure. 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. In the event of an earthquake, even slight vibrations can lead to an increase and expansion of cracks in the house, which may ultimately result in collapse. When facing natural disasters such as floods, safety precautions are also significantly inadequate.

Poor sound insulation and thermal insulation: Prefabricated houses perform poorly in terms of thermal and sound insulation. In summer, it is hot, and in winter, it is cold. During extreme weather conditions, the poor thermal insulation performance of the walls allows cold or hot air to easily seep into the interior through gaps in the walls and edges of doors and windows, affecting living comfort. At the same time, the sound insulation effect is also poor, and the voices of neighbors can be clearly heard, reducing the quality of life.

Difficult to adjust the internal structure: The internal structure of prefabricated houses almost does not allow for 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, lacking flexibility.

Risk of water seepage: Over time, cracks may appear in the cement components, and the gaps between the components may increase, increasing the risk of water seepage between the upper and lower floors. If the joints are not properly treated, the water seepage problem will persist, affecting the service life of the house and the living experience.

Short service life: The design service life of prefabricated houses is about 30 to 50 years. Many prefabricated houses built in the 1970s and 1980s are approaching or have exceeded their intended service lives, showing signs of aging. Repair is difficult and costly, and some houses have even been identified as "dangerous buildings."

Low structural strength of the house: To reduce weight, prefabricated houses 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, resulting in low structural strength and poor overall stability of the house.

High foundation requirements: When building prefabricated houses, foundation treatment is crucial. Uneven settlement can have a fatal impact on the house, causing it to tilt and crack, and may even be irreparable.

Limited construction height: When building prefabricated houses, attention must be paid to height restrictions. The higher the height, the greater the load borne by the prefabricated parts at the bottom. If the bottom is not reinforced, it is easily crushed, leading to continuous collapse of the upper parts.