Water and Electricity Renovation in Prefabricated Slab Houses

Special attention must be paid to structural safety and construction specifications when renovating water and electricity systems in prefabricated slab houses. Here are the key points:

1. Prohibit horizontal slotting; prioritize vertical or ceiling wiring
Prefabricated slabs are precast concrete components. Horizontal slotting can sever internal steel reinforcement, reducing the floor slab's load-bearing capacity and even leading to fracture risks. When wiring, vertical slots should be cut along the base of walls or wiring should be routed through the floor. If the house has a suspended ceiling, wiring can be directly routed through slots in the ceiling to avoid damaging the main structure of the prefabricated slab.

2. Exercise caution when crossing water and electricity lines; minimize trench depth
If water and electricity lines must cross, trench depth and width must be strictly controlled. Only extremely small slots are allowed, and they must be cut by experienced plumbers and electricians to avoid compromising the floor slab's strength through excessive excavation. Before construction, professional testing should be conducted to confirm the floor slab's thickness and ensure that trenching does not reach the internal steel reinforcement.

3. Comprehensively replace water supply pipes; prohibit the use of old iron pipes
The original water supply pipes in old houses are often galvanized iron pipes, which are prone to rust and corrosion over time, leading to water quality contamination and leakage risks. The original iron pipes must be discarded and replaced with polypropylene (PPR) buried plastic pipes. These pipes are corrosion-resistant, have a long service life, and can be connected through hot melting during construction, reducing the risk of leakage at joints.

4. Choose construction methods based on floor conditions

• After removing the old floor: Exposed pipes can be directly laid on the floor, secured with pipe clamps, and then tiled or leveled for flooring installation. This method facilitates future maintenance but requires attention to pipe protection.
• Without a leveling layer: Avoid directly slotting the surface of the prefabricated slab. Instead, opt for thin pipes or route wiring along wall corners to minimize structural damage. If slotting is necessary, repair and reinforce with cement mortar.

5. Prioritize professional companies to ensure structural safety
Renovating water and electricity systems in prefabricated slab houses requires high technical expertise. It is recommended to choose companies with specialized reinforcement technologies, such as Jiangcheng Decoration, which employs a system of "elastic base layer + anti-crack mesh + high-toughness surface layer." Such companies can reduce risks through technologies like carbon fiber reinforcement and anti-crack treatment and assist in obtaining structural safety assessment certificates to ensure compliance with regulations.

Summary: The core of renovating water and electricity systems in prefabricated slab houses is to protect the floor slab structure. Strict adherence to the principles of "no horizontal slotting, minimal trenching, pipe replacement, and professional selection" is essential to avoid safety hazards caused by improper construction.