What is the Thickness of the Walls of Prefabricated Houses?

The thickness of the walls of prefabricated houses typically ranges from 100 mm to 200 mm, with a common range of 120 mm to 150 mm. The following provides an in-depth explanation from different perspectives:

1. Common Thickness Range
According to industry practices, cement prefabricated panel walls, as the main wall structure of prefabricated houses, are designed to balance structural strength, thermal insulation performance, and material costs. In most cases, the standard thickness falls within the range of 120 mm to 150 mm. This range not only meets basic load-bearing requirements but also effectively controls the self-weight of the walls, reducing the demands on the building foundation. For example, some lightweight prefabricated houses use 120 mm thick walls, suitable for low-rise buildings or temporary housing; while 150 mm thick walls are more commonly found in multi-story residential buildings or scenarios with higher requirements for sound insulation and thermal insulation.

2. Causes of Thickness Variations
The thickness of prefabricated panel walls is not a fixed value but is influenced by various factors:

• Functional Requirements: If the walls need to bear greater loads (such as load-bearing walls) or require enhanced sound insulation and fire resistance, the thickness may increase to 180 mm or even 200 mm; non-load-bearing walls or partition walls may adopt a thinner design of 100 mm.
• Material Types: Traditional cement prefabricated panels, due to strength limitations, typically have a larger thickness; while new composite materials (such as reinforced concrete sandwich panels) can achieve thinner designs through structural optimization while maintaining performance.
• Regional Regulations: Different countries or regions have specific building standards that define wall thickness requirements. For example, some cold regions may require wall thicknesses of no less than 150 mm to improve thermal insulation effects.

3. Correlation Between Thickness and Performance
Wall thickness directly affects the thermal performance, sound insulation effect, and space utilization of buildings:

• Thermal Insulation: Increasing thickness can enhance the thermal resistance of walls, reducing heat transfer, but it is necessary to balance material costs and energy-saving benefits.
• Sound Insulation: Thicker walls (such as those over 150 mm) provide more significant blocking effects against low- and medium-frequency noise, making them suitable for places with high acoustic environment requirements.
• Space Occupation: Excessively thick walls reduce the usable indoor area, so it is necessary to strike a balance between performance and space efficiency.

4. Thickness Selection in Special Scenarios
In extreme climates or special-purpose scenarios, wall thickness may exceed conventional ranges. For example, the wall thickness of prefabricated houses in the Arctic region can reach over 200 mm to cope with extremely cold environments; while temporary prefabricated houses (such as post-disaster relief housing) may adopt 100 mm thin walls for rapid construction and cost reduction.