Disadvantages of Prefabricated Integrated Housing

The disadvantages of prefabricated integrated housing mainly include limited customization, high durability and maintenance requirements, insufficient structural strength and earthquake resistance, issues with cracks and water leakage, poor thermal insulation performance, and limited service life.

Limited Customization: Prefabricated integrated housing uses standardized modules during production, resulting in low design flexibility. Although some manufacturers offer customization services, they are limited by the dimensions and connection methods of the prefabricated components, making it difficult to fully meet complex or unique architectural needs, such as special spatial layouts or non-standard-sized components.

Durability and Long-Term Maintenance: Since components are prefabricated in factories and then transported to the site for assembly, connection joints (such as bolts and welds) may age or loosen due to environmental factors (such as humidity and temperature changes), requiring regular inspection and maintenance. Additionally, some materials (such as lightweight panels) have weak corrosion resistance and may accelerate wear when exposed to harsh environments for extended periods.

Insufficient Structural Strength and Earthquake Resistance: The connection methods of prefabricated components (such as dry connections) are generally weaker than the integrity of cast-in-place concrete, resulting in lower structural toughness. Especially under earthquake or strong wind conditions, joints are prone to displacement or fracture. The low reinforcement density of hollow-designed prefabricated panels further weakens earthquake resistance. Even minor tremors can cause structural fatigue, widen cracks, and increase the risk of collapse.

Issues with Cracks and Water Leakage: Joint gaps and material shrinkage are the main causes of cracks, which not only weaken wall strength but may also lead to water leakage. Damp environments can breed mold and bacteria, posing health risks to occupants while corroding internal structures and shortening the lifespan of the house.

Poor Thermal Insulation Performance: The walls and roofs of prefabricated integrated housing often use lightweight materials with high thermal conductivity, resulting in stuffy summers and cold winters. They rely on air conditioning or heating to maintain comfortable temperatures, increasing energy consumption. Additionally, the sound insulation is poor, allowing external noise to easily enter the interior and affecting sleep quality.

Limited Service Life: Affected by material aging and wear of connection components, the design service life of prefabricated integrated housing is typically 30 to 40 years, shorter than the over 50-year lifespan of traditional brick-concrete or reinforced concrete structures. If not properly maintained, the actual service life may be further shortened.