How Thick Are the Wooden Boards in Prefabricated Houses

The thickness of wooden boards (prefabricated panels) used in prefabricated houses does not have a single fixed value, commonly ranging from 60mm to 250mm, with 120mm and 150mm being the most popular in residential buildings. The specific thickness selection needs to be comprehensively determined based on factors such as building function, load requirements, and span. Here is a detailed explanation:

1. 120mm thick prefabricated panels: Suitable for small-span, light-load scenarios
This thickness is one of the most commonly used standard specifications in residential buildings, typically used in rooms with a span not exceeding 3.9 meters, such as bedrooms, studies, or storage rooms. These spaces have relatively low requirements for structural load-bearing capacity. A thickness of 120mm can meet daily usage needs while effectively controlling the building's self-weight and cost. Additionally, its sound insulation performance can meet general living requirements, but if higher sound insulation is required (such as for rooms near elevator shafts or streets), it needs to be optimized by adding sound insulation layers or selecting thicker panels.

2. 150mm thick prefabricated panels: Balancing structural rigidity and sound insulation
A thickness of 150mm is another mainstream specification in residential buildings, commonly used in public areas such as living rooms and dining rooms. These spaces usually have a larger span (up to 4.5 meters or more) and frequent human activity, requiring higher structural rigidity and load-bearing capacity. A thickness of 150mm can significantly improve the panel's bending resistance and reduce the risk of deformation. At the same time, its internal structure (such as double-layer reinforcement or thickened concrete layers) can effectively block sound transmission, providing better sound insulation than 120mm panels. Some high-end residential projects uniformly adopt a thickness of 150mm to enhance overall quality.

3. 200mm and above thick prefabricated panels: For large-span or special functional requirements
In public buildings (such as shopping malls and schools) or industrial plants, where the span may exceed 6 meters or heavy equipment loads need to be borne, the thickness of prefabricated panels needs to be increased to 200mm or even 250mm or more. These panels ensure structural safety by increasing the thickness of the concrete layer or configuring higher-strength reinforcement; some projects also adopt prestressing technology to further enhance crack resistance. In addition, hospitals, laboratories, and other places with strict requirements for vibration control may also select ultra-thick panels to reduce environmental interference.

4. 100mm thick prefabricated panels: Customized choices for special scenarios
Although 100mm thickness is less commonly used, it may still be adopted in some temporary buildings, low-rise rural houses, or renovation projects. These panels usually reduce self-weight while ensuring basic load-bearing capacity by optimizing reinforcement configuration or using lightweight concrete. However, it should be noted that the sound insulation and fire resistance performance of 100mm panels are relatively weak, and other measures (such as adding sound insulation cotton) need to be combined to make up for the deficiencies.