Should Prefabricated Panels Be Used in House Construction?

Whether to use prefabricated panels in rural self-built houses requires a comprehensive assessment based on actual conditions. If the budget is not extremely tight, it is recommended to prioritize cast-in-place roofs.

Advantages of Prefabricated Panels

Prefabricated panels were once widely used in rural self-built houses, primarily due to their low cost and fast construction speed. For example, the total lifting cost for a 40-50 square meter roof is approximately 800 yuan, significantly lower than the cost of a cast-in-place concrete roof (over 3000 yuan for the same area). For scenarios with limited budgets or urgent completion needs, prefabricated panels can quickly complete roof installation, shortening the construction period.

Significant Drawbacks of Prefabricated Panels

1. Prone to cracking and leaking: Gaps exist between prefabricated panels during assembly, which can lead to cracking and leaking over time due to thermal expansion and contraction or foundation settlement. Leaking issues are common (8 out of 10 households experience leaking).
2. Poor sound insulation: The limited thickness of the floor slab allows footsteps and conversations from the upper floor to be clearly heard, affecting living comfort.
3. Low earthquake resistance: The weak connection between prefabricated panels and walls makes them prone to detachment or collapse during earthquakes, making them unsuitable for earthquake-prone areas.
4. Insufficient thermal insulation: Poor heat insulation in summer and thermal retention in winter require additional insulation layers, increasing costs.
5. Short lifespan: The lifespan of prefabricated panels is approximately 30 years, much shorter than the durability of cast-in-place roofs.

Advantages of Cast-in-Place Roofs

Cast-in-place concrete roofs are formed through integral pouring, creating a seamless structure that significantly outperforms prefabricated panels in terms of safety, durability, sound insulation, thermal insulation, and earthquake resistance. Although the initial cost is higher, long-term maintenance costs are lower, and they meet modern building requirements for safety and comfort.

Regulations and Applicable Scenarios

According to housing and urban-rural development regulations, "three types of panels" (including prefabricated floor slabs) are mainly applied to public buildings or newly built commercial residential buildings with a single building area of over 20,000 square meters, with no mandatory requirements for rural self-built houses. Therefore, the decision to use prefabricated panels can be entirely based on the owner's needs.

Conclusion: If the budget allows, cast-in-place roofs are the better choice; if the budget is extremely tight and there are no high requirements for earthquake resistance or thermal insulation, prefabricated panels can be used cautiously, but proper waterproofing and regular maintenance are necessary.