How to Make Prefabricated Houses by Hand

Prefabricated houses made by hand are primarily based on the modular construction concept and are completed through a combination of 'factory prefabrication + on-site assembly'. The process can be divided into three core steps: modular disassembly and factory prefabrication, on-site assembly, and detail finishing.

1. Modular Disassembly and Factory Prefabrication
The house first undergoes modular disassembly, breaking it down into independent modules such as ceilings, floors, walls, and plumbing and electrical lines. These modules are manufactured on factory assembly lines. For example, ceilings, walls, and bathroom waterproofing layers are all prefabricated in the factory. Some processes employ automated assembly technology, with errors controlled to within millimeters to ensure module precision. The factory prefabrication model enables standardized production, reducing uncertainties in on-site construction while shortening the overall timeline through parallel operations (e.g., producing multiple modules simultaneously).

2. On-Site Assembly
After the prefabricated modules are transported to the construction site, they are assembled into shape through lifting and joining methods. For example, tower cranes are used to lift large modules (such as walls and floors) into their designated positions; beams are quickly connected using mortise-and-tenon joints, and stairs are installed layer by layer like building blocks; finally, floors are laid, and gaps between modules are filled with grout to form a unified structure. The assembly process relies on standardized interface designs between modules to ensure precise engagement of components and minimize on-site adjustments.

3. Detail Finishing
After assembly, connection points require reinforcement. For example, foam sealant is used to fill gaps between beams and foundation piles to enhance structural stability; nut fastenings are sealed with cement to prevent metal parts from rusting or corroding; plumbing and electrical connections undergo sealing tests to ensure no leakage risks. Additionally, the entire house undergoes leveling and exterior finishing to meet design requirements.

Advantages and Features
This model combines factory prefabrication with on-site assembly, reducing construction time by over 60% while minimizing on-site noise, dust, and construction waste. Modular design also supports flexible expansion or renovation, such as adjusting the house layout by adding or removing modules in the future. Furthermore, factory production ensures strict control over material quality and construction precision, enhancing the overall safety and durability of the house.