One-and-a-Half-Story Tile Roof House Using Precast Panels

One-and-a-half-story tile roof houses can use precast panels, but specific construction methods must be combined, and reinforcement and waterproofing measures should be taken. Caution is advised when choosing this option for single-story rural house construction.

Construction Methods and Advantages of Precast Panels in Tile Roof Houses

Precast panels are commonly used as the base structure in tile roof houses. During construction, precast panels are laid on load-bearing walls to form a horizontal support surface, followed by the erection of the roof frame and the covering of tiles. Their advantages are mainly reflected in cost and efficiency: Lower cost, with the unit price of precast panels typically not exceeding 100 yuan per piece, and the overall cost being about half that of a cast-in-place roof; Efficient construction, as they can be directly hoisted and assembled without the need for on-site pouring or long curing times, significantly shortening the construction period.

Limitations of Precast Panel Solutions and Countermeasures

1. Poor structural integrity: Precast panels are assembled in pieces, making their seismic resistance weaker than that of cast-in-place structures, especially in earthquake-prone areas where caution is advised. Overall connections can be strengthened by adding structural columns and ring beams, or a cast-in-place roof can be chosen as an alternative.
2. Panel joint leakage: Cracks may form at the joints due to settlement or thermal expansion and contraction, leading to leakage. A waterproof layer (such as asphalt or felt) can be laid at the panel joints, or a double waterproof barrier can be formed by adding tiles.
3. Limited thermal insulation: The thermal insulation effect of precast panels is weaker than that of cast-in-place roofs, potentially increasing indoor temperatures in summer. The thermal insulation effect can be improved by using a tile roof or adding an insulation layer (such as extruded polystyrene board) to compensate for the deficiency.

Reasons Why Precast Panels Are Not Recommended for Single-Story Rural House Construction

1. Lower safety: The seismic resistance of precast panels is poor, and their connection methods (such as grouting in reserved holes or welding) are prone to damage under external forces such as earthquakes, leading to detachment or structural instability.
2. Short service life: In actual use, precast panels may show signs of aging, cracking, and leakage after about 10 years, affecting house safety and falling far short of the 50-year lifespan claimed by manufacturers.
3. Prone to leakage and cracking: Precast panels are large in size, and the floor of a bedroom typically requires multiple panels to be assembled, resulting in poor overall structural integrity and easy cracking; the large joint gaps are also prone to leakage over time.