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Prefabricated House Wood Panel Thickness Standard
Admin September 18, 2026
The thickness of commonly used prefabricated panels in prefabricated houses is not a fixed single value, typically ranging from 60mm to 250mm. The standard thicknesses prevalent in residential buildings are 120mm, 150mm, and 180mm, which should be designed according to the specific usage scenario, span, load requirements, and building codes. Here is a detailed explanation:

Residential Scenarios
- 120mm-thick prefabricated panels: Suitable for rooms with smaller spans (generally within 3.9 meters) and lighter loads, such as bedrooms and storage rooms. They can bear approximately 1kN per square meter (about 100 kilograms), meeting daily living needs and offering a relatively low-cost option, making them an economical choice for residential buildings.
- 150mm-thick prefabricated panels: Commonly used in living rooms, dining rooms, and other areas that require greater live loads or slightly larger spans. Their load-bearing capacity doubles to 200 kilograms per square meter, providing better structural rigidity and sound insulation, enhancing living comfort.
Special Scenarios
- 180mm to 240mm-thick prefabricated panels: Primarily used in large-span or heavy-load scenarios such as factories and warehouses, with load-bearing capacities ranging from 1 to 3 tons, meeting the needs of industrial production or goods storage.
- 300mm and above-thick prefabricated panels: High-rise buildings over 30 stories may use 300mm-thick prefabricated panels to enhance structural stability and seismic performance; underground garage roofs may even use 400mm-thick panels to incorporate waterproofing functions.
Other Notes
- 80mm-thick prefabricated panels: Due to their extremely low load-bearing capacity (only suitable for temporary structures like doghouses), they are not recommended for use in residential or formal buildings to avoid safety hazards.
- Design Requirements: The selection of prefabricated panel thickness should be based on architectural structural drawings, load calculation documents, and local codes. The main load-bearing structures must strictly adhere to engineering design safety standards to ensure the safety and durability of the building.
If the user specifically refers to wooden prefabricated house components (such as glulam or cross-laminated timber), further clarification of the application scenario (e.g., walls, floors, roofs) and design codes is required, as this information does not cover such content.




