Ceiling of Prefabricated Panel Structure House

The ceiling of a prefabricated panel structure house is usually composed of spliced prefabricated panels, which are prone to aging at the joints, resulting in issues such as dust shedding and water leakage. Here is a detailed introduction:

Ceiling Composition

The main component material of the ceiling in a prefabricated panel structure house is prefabricated panels. These are concrete prefabricated parts produced and processed at a prefabrication yard. The production process involves first nailing a hollow mold with wooden boards. Then, steel bars are reasonably arranged in the hollow part of the mold according to design requirements to enhance the strength and load-bearing capacity of the prefabricated panels. After that, the hollow part is filled with cement. Once the cement dries and hardens, the wooden boards are knocked off, and the prefabricated panels are thus made. During house construction, the factory transports the produced cement panels (prefabricated panels) to the construction site, splices them onto the walls like building blocks, and then uses cement mortar for bonding, thereby forming the ceiling of the house.

Existing Problems

• Weak Joints: Since the prefabricated panels are spliced together, the joints are the weak points of the entire ceiling. As the service life increases, problems gradually arise with the cement mortar at the joints. On the one hand, the mortar may crack due to environmental factors and material aging. The cracks will continue to expand, affecting the integrity and stability of the ceiling. On the other hand, the mortar may also shed debris, making the structure at the joints even looser.
• Floor Swaying and Water Leakage: When the mortar at the joints cracks and sheds debris, the panels become loose. This looseness can cause the floor to sway when subjected to external forces, such as people walking or vibrations, affecting the comfort and safety of living. At the same time, the loose parts also provide a channel for rainwater to penetrate, leading to water leakage during rain, which can not only damage the interior decoration and items but may also affect the structural safety of the house.
• Ceiling Dust Shedding: In addition to the problems at the joints, the prefabricated panels themselves may also shed dust on the surface due to production processes, material quality, or long service life, affecting indoor hygiene and aesthetics.