What is the Best Wall Thickness for Prefabricated Houses?

There is no unified standard for the optimal wall thickness of prefabricated houses. It needs to be selected according to the purpose and structural requirements, with a common thickness range of 75mm - 240mm and above.

Load-bearing walls: The thickness is generally at least 120mm, and in some cases, it can be over 240mm. Load-bearing walls are a crucial part of the house structure that bear the weight of the upper floors. They need to have sufficient strength and stability to support the entire building's load. Thicker walls can better disperse pressure and ensure the safety of the house structure. For example, in some multi-story or high-rise prefabricated houses, to meet structural safety requirements, load-bearing walls may adopt a specification of 240mm or even thicker to cope with large vertical and horizontal loads (such as wind and earthquake forces).

Non-load-bearing walls:

• 75mm walls are mainly suitable for interior partitions. This thickness of wall can effectively divide the interior space while not taking up too much interior space, making the room layout more flexible. For example, in some small-sized prefabricated houses, using 75mm partition walls can increase the interior usable area and improve space utilization.
• 90mm walls are mainly suitable for exterior wall insulation. They can play a role in heat insulation and preservation, improving the energy efficiency of the house. In cold regions, 90mm exterior wall insulation can reduce the loss of indoor heat and lower heating energy consumption. In hot regions, it can prevent outdoor heat from entering the interior and reduce the frequency of air conditioning use.
• 100mm walls are mainly suitable for exterior wall insulation and the construction of light-weight houses. While ensuring insulation performance, they can also meet the structural requirements of light-weight houses. For some light-weight prefabricated houses with strict weight restrictions, such as mobile houses and temporary buildings, 100mm walls are a relatively appropriate choice.
• 120mm walls are suitable for heavy industrial buildings. Heavy industrial buildings usually have high requirements for structural stability and load-bearing capacity, and 120mm walls can provide sufficient strength and stiffness to meet their usage needs.

Cement prefabricated panel walls: The common thicknesses are 120mm or 150mm. Cement prefabricated panel walls have advantages such as fast construction speed and stable quality. The selection of their thickness mainly depends on the design requirements and usage functions of the house. 120mm cement prefabricated panel walls are suitable for buildings with relatively low load requirements, while 150mm cement prefabricated panel walls can bear larger loads and are suitable for buildings with high structural strength requirements.