The Disadvantages of Prefabricated Houses

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

1. Low structural strength and poor earthquake resistance Prefabricated houses are assembled from prefabricated panels, resulting in insufficient overall firmness and toughness. Their hollow design and less scientific distribution of steel bars compared to cast-in-place houses lead to extremely poor earthquake resistance. Minor vibrations can loosen the floor joints, and over time, cracks may increase and expand, even posing a risk of overall collapse.

2. Short service life The designed service life of prefabricated houses is typically 30 to 50 years, but in actual use, it may be shortened due to material aging or improper maintenance. Many old prefabricated houses have been identified as 'dangerous buildings' due to structural issues, with high repair costs and difficulties, necessitating complete demolition and reconstruction.

3. Prominent issues of wall cracks and water leakage Prefabricated houses are prone to wall cracks and ceiling water leakage, especially for top-floor residents who often face indoor water leakage during rainy days. Over time, cracks in cement components expand, and gaps between components increase, further exacerbating the risk of water leakage and affecting the living experience.

4. Poor thermal insulation performance Prefabricated panel buildings have insufficient thermal insulation capabilities, resulting in stuffy interiors in summer and cold interiors in winter. In extreme weather conditions, cold or hot air can easily enter the interior through wall gaps and around doors and windows, leading to increased energy consumption and significantly reduced living comfort.

5. Poor sound insulation The walls and floors of prefabricated houses have weak sound insulation performance, and residents can often clearly hear their neighbors' conversations or daily activities, compromising privacy and interfering with quality of life.

6. Limited internal structural adjustments The walls of prefabricated houses often serve structural support functions, and large-scale modifications may compromise overall stability. Residents find it difficult to customize the space according to their needs, with flexibility far lower than that of modern commercial housing.

7. High requirements for foundation treatment If the foundation is improperly treated, leading to uneven settlement, prefabricated houses are prone to issues such as tilting and cracking, with extremely difficult repairs that may cause irreversible structural damage.

8. Limited construction height The bottom components of prefabricated houses need to bear the upper loads. Without reinforcement design, an increase in height can cause the bottom to be crushed, triggering continuous collapse accidents, thus limiting their applicable number of floors.

9. Difficult joint treatment If the joints between prefabricated components are improperly constructed, there will be long-term hidden risks of water leakage on roofs and walls, requiring regular maintenance; otherwise, the problems will worsen over time.