Disadvantages of Prefabricated Houses
The disadvantages of prefabricated houses are mainly reflected in aspects such as insufficient seismic performance, poor sound insulation and thermal insulation, difficulty in adjusting the internal structure, water leakage risks, relatively short service life, quality risks and supervision challenges, planning and design change risks, property rights and certificate processing risks, as well as market fluctuations and price risks.
Insufficient Seismic Performance: Prefabricated houses mainly rely on cement for construction. Although steel bars are added, their overall seismic capacity cannot be compared with that of modern buildings. The assembled structure lacks the toughness of on-site cast reinforced concrete. The hollow design and low steel bar density make them vulnerable in earthquakes or strong winds, with obvious deficiencies in safety precautions.
Poor Sound Insulation and Thermal Insulation: Prefabricated houses perform poorly in terms of thermal and sound insulation. In summer, the indoor environment is stuffy, and air conditioning is ineffective in cooling. In winter, it is cold, and heating efficiency is low with high energy consumption. Long-term residence may increase health risks, and poor sound insulation affects sleep quality.
Difficulty in Adjusting the Internal Structure: Unlike modern commercial housing, the walls of prefabricated houses are usually closely related to the overall structure. Large-scale modifications may damage stability, making it difficult for residents to customize living spaces according to their needs.
Water Leakage Risks: Cement components are prone to cracks over time. Improper joint treatment can lead to long-term water leakage problems, affecting the durability of roofs and walls.
Relatively Short Service Life: The designed service life of prefabricated houses is about 30 to 50 years. Many houses built in the early stages are approaching or have exceeded their service lives, showing signs of aging.
Quality Risks and Supervision Challenges: If quality control is not strict in the factory production of prefabricated components, problems such as connection gaps and improper materials may arise. Homebuyers find it difficult to supervise the production process, and developers may cut corners, resulting in damage to their rights and interests.
Planning and Design Change Risks: Developers may unilaterally adjust plans, such as reducing green spaces and increasing building density, which degrade the quality of the residential area and living experience, and may even affect the market value of the houses.
Property Rights and Certificate Processing Risks: Some developers have not obtained complete procedures, making it difficult for homebuyers to process property rights certificates. They may also face the risk of losing both money and the house due to house mortgages.
Market Fluctuations and Price Risks: A decline in housing prices or policy adjustments may increase homebuying costs or loan difficulties. Homebuyers need to bear the risk of a decrease in the value of their houses.
