How Thick Are Prefabricated Houses?

The wall thickness of prefabricated houses typically ranges from 120mm to 150mm, while the thickness of prefabricated panels ranges from 60mm to 250mm. The common thickness of residential floor slabs is 120mm or 150mm.

Wall Thickness

The wall thickness of prefabricated houses primarily depends on structural design and usage requirements. In prefabricated houses popular in rural areas of Henan, the wall thickness is often 120mm (i.e., 12 centimeters). This specification meets basic load-bearing and insulation needs while balancing material costs and construction efficiency. Some prefabricated houses may adopt composite wall structures, such as an inner layer of lightweight filling material and an outer layer of concrete or steel, with an overall thickness of up to 150mm to enhance sound insulation, fire resistance, or insulation performance.

Prefabricated Panel Thickness

The thickness of prefabricated panels varies significantly depending on the application and function:

1. Floor Slab Prefabricated Panels: In residential buildings, floor slabs must withstand loads from occupants and furniture, with common thicknesses of 120mm or 150mm. For example, rooms with smaller spans may use 120mm-thick prefabricated panels, while areas with larger spans or higher load requirements (such as living rooms) may opt for 150mm-thick panels.
2. Roof Panel Prefabricated Panels: Roof panels must consider factors such as waterproofing, insulation, and snow loads, with thicknesses typically similar to those of floor slabs. However, performance may be enhanced by adding insulation or waterproofing layers.
3. Other Prefabricated Panels: Panels such as exterior wall panels and partition panels may be thinner (e.g., 60mm to 100mm) to reduce structural weight and optimize space utilization.

Factors Influencing Thickness Selection

The selection of wall and prefabricated panel thicknesses for prefabricated houses must consider the following factors:

• Structural Safety: Larger spans and higher loads require greater thickness. For example, prefabricated panels in industrial buildings may be as thick as 200mm to 250mm.
• Insulation Performance: In cold regions, increasing wall thickness or adopting composite insulation structures may improve thermal performance.
• Cost and Construction: Thinner walls or prefabricated panels reduce material costs but must meet regulatory requirements; excessive thickness may increase transportation and installation difficulties.

Overall, the thickness design of prefabricated houses must balance functionality, safety, and cost-effectiveness, with specific values determined by project requirements and professional calculations.