How Thick Are the Walls of Finished Prefabricated Houses

The thickness of the walls of finished prefabricated houses typically ranges from 75 millimeters to 30 centimeters, with the specific thickness varying depending on the wall type, material, and design purpose. Here are the thickness ranges and applicable scenarios for different types of prefabricated house walls:

1. Prefabricated walls made of Portland cement and steel keels These walls use Portland cement as the base material and have steel keels embedded inside to enhance structural strength, with a thickness range of 120 millimeters to 150 millimeters. This design takes into account both load-bearing performance and lightweight requirements. It is commonly used for the exterior walls or load-bearing walls of multi-story prefabricated houses and can meet the requirements for wall strength and stability in building codes.

2. Walls of prefabricated panel houses The wall thickness options for prefabricated panel houses are more flexible, with common specifications including 75 millimeters, 90 millimeters, 100 millimeters, and 120 millimeters. Among them:

• 75-millimeter walls: Mainly used for interior partitions, reducing material consumption while dividing spaces;
• 90-millimeter walls: Suitable for exterior wall insulation layers, improving thermal insulation performance by increasing thickness;
• 100-millimeter walls: Balancing the needs of exterior wall insulation and lightweight house construction, balancing cost and functionality;
• 120-millimeter walls: Mostly used in heavy industrial buildings that need to bear larger loads or meet special fire protection requirements.

3. Walls of cement finished houses The thickness range of these walls is relatively wide, from 10 centimeters to 30 centimeters, depending on the structural design:

• Reinforced concrete walls: Usually have a thickness of more than 20 centimeters and are used in high-rise buildings or areas with high seismic requirements;
• Double-layer walls: Composed of two prefabricated panels with thermal insulation material filled in between, the total thickness can reach 25 - 30 centimeters, significantly improving thermal and sound insulation effects;
• Sandwich panel walls: With lightweight core materials (such as polystyrene) as the core and metal or cement panels covering both sides, the thickness is mostly between 10 - 15 centimeters, suitable for quickly erected temporary buildings.

4. Quick-assembly wall panels Quick-assembly wall panels adopt a standardized production process and have a uniform thickness of 120 millimeters. Their advantages include easy installation, low cost, and the ability to meet basic living needs. They are commonly used in post-disaster reconstruction or low-cost housing projects.

Summary: The selection of wall thickness for prefabricated houses requires comprehensive consideration of factors such as building purpose, load requirements, thermal insulation performance, and cost. From lightweight partitions to heavy-duty load-bearing walls, the thickness range covers 75 millimeters to 30 centimeters. During design, relevant codes must be strictly followed to ensure safety and functionality.