Which Houses Are Prefabricated Panel Houses

Prefabricated panel houses are primarily fast-produced residences built from the 1960s to the 1990s, with the most common being those constructed in large quantities from the 1980s to the 1990s. Some were also built around the year 2000.

Construction Era and Background

Prefabricated panel houses are products of a specific historical period, mainly concentrated from the 1960s to the 1990s. From the 1970s to the 1980s, to rapidly address the housing needs of employees, a large number of residences were constructed using prefabricated panel technology. From the 1980s to the 1990s, they entered a phase of mass construction, becoming the main form of urban housing at the time. Around the year 2000, a small number were still being built, but they were gradually replaced by monolithic cast-in-place structures. This construction background is closely related to the era's demand for addressing housing shortages and pursuing rapid, low-cost construction.

Structural Characteristics

The core feature of prefabricated panel houses is the use of prefabricated cement components for assembly. Floor slabs are made from cement panels produced in advance at factories and transported to the site for assembly, rather than being cast as a whole. Prefabricated panels come in two types: solid and hollow, which are formed by nailing wooden models, laying out steel bars, and pouring cement. This structure results in poor overall integrity of the house, with gaps easily appearing at the joints, posing potential quality issues for the future.

Overall Characteristics of the Houses

1. Lifespan and Cost: The designed lifespan is generally 30-50 years, shorter than the current standard of 70 years for commercial housing. The construction period is short and the cost is low, but at the expense of durability and safety.
2. Safety Hazards: Walls are prone to cracking, and aging pipelines can easily trigger fires; they have poor earthquake resistance, posing higher risks during earthquakes; over time, gaps in the floor slabs are prone to water leakage, with weak waterproofing performance.
3. Living Experience: They have poor sound insulation and heat insulation effects, often with unreasonable floor plan designs, resulting in low living comfort.

Simple Identification Methods

1. Construction Year: Prioritize inspecting residences built from the 1980s to the 1990s, especially old employee dormitories or unit welfare housing.
2. Internal Observation: If cracks appear on the ceiling along the panel joints, or if the roof frequently leaks, it may be a prefabricated panel structure; cracks in monolithic cast-in-place structures are usually irregular.
3. Archive Inquiry: Check the property certificate, construction archives, or verify the house structure type with the community housing construction department, which is the most authoritative way to determine.

Prefabricated panel houses are products of specific historical conditions, and their defects gradually become apparent over time. If you live in such a house, it is recommended to regularly inspect the structural safety and carry out reinforcement and renovation if necessary.