How to Make Prefabricated Roof for Houses

There are two common methods for making prefabricated roofs for houses, as follows:

Lifting Prefabricated Panels onto the Roof in Rural House Construction

In rural house construction scenarios, when it is necessary to install prefabricated panels on the roof, due to their significant weight—a single panel may weigh up to two or three tons—a crane can be used for lifting operations if available, accurately placing the panels at designated positions. However, in the absence of a crane, the working people demonstrate their ingenuity by employing simple tools for lifting. They construct makeshift lifting devices using materials like steel pipes, utilizing physical principles such as pulley systems and leverage to gradually lift and position the prefabricated panels onto the roof using human or animal power. Although this method is relatively traditional and labor-intensive, it serves as a practical solution in the absence of professional equipment. Nevertheless, this operation requires a high level of skill and experience from the construction workers to ensure the safety and stability of the lifting process, preventing the panels from slipping and causing accidents.

Precise Placement of Prefabricated Panels and Concrete Pouring

Another more precise method involves conducting accurate measurements and markings beforehand. Construction workers draw markings of appropriate dimensions on the walls at both ends to determine the installation positions of the prefabricated panels. Additionally, they mark positions for allowances in the middle of these markings for subsequent adjustments. Next, they place the pre-prepared prefabricated panels with lines aligned with the markings. During placement, they use bricks to test the gap sizes and make slight adjustments to inappropriate positions to ensure the panels are installed flat and tightly. To reduce the load on the middle of the door beam, wooden planks are used for support and firmly fixed with nails. Subsequently, matching bricks are arranged inside to further enhance the structural stability. After completing these steps, they uniformly mix gravel concrete and pour it onto the roof. During the pouring process, aluminum alloy tools are used for vibration and leveling operations. Vibration makes the concrete denser, eliminating air bubbles, while leveling ensures the flatness of the roof surface, preventing air bubbles and gaps in the concrete, and improving the quality and durability of the roof.