Plumbing and Electrical Renovation of Prefabricated Slab Houses

When renovating the plumbing and electrical systems in prefabricated slab houses, it is strictly prohibited to cut horizontal grooves in the prefabricated slabs. Safety and quality can be ensured by reasonably planning the wiring layout, making proper preparations for the plumbing and electrical renovation, and addressing common issues.

Wiring Layout

• Utilizing the ceiling space: In areas with suspended ceilings, the space inside the ceiling can be used to lay electrical wires. There is sufficient space inside the ceiling to accommodate wire conduits, and this method does not damage the structure of the prefabricated floor slabs. However, it is essential to ensure that the wire conduits are firmly fixed inside the ceiling to prevent the wires from moving freely. At the same time, the insulation performance of the wires should be good to avoid potential safety hazards such as electric leakage.
• Cutting grooves in the wall: This method is suitable for connecting electrical wires between different indoor locations. Before cutting grooves, it is necessary to fully understand the wall structure to avoid damaging load-bearing walls or the connection parts between the prefabricated floor slabs and the walls. During the grooving process, try to keep the groove openings flat to minimize damage to the walls. After grooving is completed, the groove openings should be filled in a timely manner, and the wall surface should be repaired to restore its flatness and aesthetics.

Preparations for Plumbing and Electrical Renovation

For old houses, especially multi-story buildings constructed before the 1990s and used for more than 10 years, plumbing and electrical renovation is a core and fundamental project. Whether the preparations for plumbing and electrical design are adequate directly affects the quality of the concealed works and, consequently, the comfort of future life. Before renovating a prefabricated slab house, a comprehensive assessment of the current plumbing and electrical conditions of the house should be carried out, including understanding the layout and aging degree of the plumbing and electrical lines, in order to formulate a reasonable renovation plan.

Addressing Common Issues

During the renovation of prefabricated slab houses, some common issues may arise, such as the main switch not opening and water pressure problems. For the situation where the main switch does not open, a plumbing and electrical technician needs to carefully check the cause of the main switch failure, which may be due to aging or damage to the main switch, and then replace the main valve in a timely manner. Water pressure problems may affect daily water use. The plumbing and electrical technician can solve the problem of insufficient water pressure by checking whether there are blockages or leaks in the water pipes and replacing appropriate faucets.