How to Choose Prefabricated House Walls

When selecting prefabricated house walls, it is necessary to make a comprehensive judgment based on structural characteristics, construction features, and load-bearing functions to ensure safety and renovation feasibility.

1. Clarify the Structural Characteristics of Prefabricated Houses

Prefabricated houses typically use factory-prefabricated components (such as wall panels and floor slabs) assembled on-site. Their structures are relatively simple, with overall strength lower than that of traditional brick-concrete or frame-structured houses, and their service life may be shorter. When selecting walls, it is essential to first confirm whether they conform to the typical characteristics of prefabricated houses: Walls and floor slabs often exhibit regular geometric shapes (such as rectangles), with visible joint marks at the seams. If the wall surface is flat but there are gaps or misalignments at the seams, or if the floor slab is composed of multiple panels joined together, these may be prefabricated components.

2. Distinguish Between Load-Bearing and Non-Load-Bearing Walls

Load-bearing walls directly support the weight of the house, and their alteration or removal may pose structural safety risks, so it is crucial to distinguish between them strictly:

• Criteria for Identifying Load-Bearing Walls:
  • Thickness: Typically ≥240mm (the thickness of traditional brick walls). If a wall is significantly thicker than other non-load-bearing walls, it should be regarded as a load-bearing structure with caution.
  • Location: In rectangular house layouts, the longer side walls are often load-bearing. Although exterior walls do not directly bear the weight of the floor, they support the weight of the walls on each floor, making them load-bearing as well. The walls at both ends of supporting beams are usually load-bearing because the load from the beams is transferred to them.
• Criteria for Identifying Non-Load-Bearing Walls:
  • Thickness: Approximately 100mm (such as lightweight partition walls), which can be confirmed through house layout drawings or on-site measurements.
  • Function: Primarily used to divide indoor spaces (such as partition walls). When altering or removing them, it is necessary to confirm that there are no electrical circuits within the walls. If circuits are present, the direction of the circuits should be determined according to the original renovation drawings before construction to avoid damaging the electrical system.

3. Evaluate the Feasibility of Wall Renovation

If renovation of prefabricated house walls is required (such as removal or opening holes), the following principles should be followed:

• Load-Bearing Walls Should Not Be Altered or Removed Arbitrarily: The overall structural integrity of prefabricated houses is relatively weak, and removing load-bearing walls may lead to house deformation or even collapse.
• Non-Load-Bearing Walls Should Be Altered or Removed with Caution: Even if a wall is non-load-bearing, if it contains electrical circuits or is tightly connected to prefabricated components, professional evaluation is required before operation to avoid affecting the house's airtightness or waterproofing performance.

By observing structural characteristics, judging load-bearing functions, and evaluating renovation feasibility, one can systematically select prefabricated house walls to ensure a balance between safety and practicality.