Materials for Prefabricated Panels on House Roofs

The materials for prefabricated panels on house roofs are usually cement components.

Production Process

When making prefabricated panels, a hollow mold is first nailed together using wooden planks. After reasonably arranging steel bars in the hollow part of the mold, cement is poured to fill the hollow section. Once the cement dries and hardens, the wooden planks are knocked off, leaving behind the prefabricated panel. This production method gives the prefabricated panel a certain degree of structural strength and stability.

Types and Characteristics

Prefabricated panels come in two types: solid and hollow. The design of the hollow structure is quite ingenious. By reducing the amount of concrete in non-load-bearing parts, it achieves lightweighting of the prefabricated panels. This not only lowers material costs but also reduces the overall weight of the building to a certain extent, resulting in relatively lower requirements for the building's foundation bearing capacity.

Application Scenarios

In the field of rural self-built houses, especially before 20 years ago, the use of prefabricated panels as roofs was relatively common. This is mainly because prefabricated panels have the advantage of being inexpensive. For rural areas with relatively limited economic conditions, they can effectively control housing construction costs. At the same time, their fast construction speed also well meets the needs of rural housing construction, shortening the construction cycle and allowing farmers to move into their new homes as soon as possible.

Existing Shortcomings

However, prefabricated panels also have some obvious drawbacks. Their waterproof performance is poor. Due to the gaps between the prefabricated panels, rainwater can easily seep into the house through these gaps, resulting in a relatively high probability of roof leaks. Their thermal insulation performance is also not good. In summer, the heat outside the house can easily be conducted into the house through the prefabricated panels, raising the indoor temperature; in winter, the opposite occurs, and the heat inside the house easily dissipates, leading to lower indoor temperatures. In addition, the seismic coefficient of prefabricated panels is low. During an earthquake, their overall integrity and stability are poor, and they are prone to damage. Therefore, they are not suitable for use in earthquake-prone areas.