How to Move the Toilet in a Hardcover House

Moving the toilet (toilet position) in a hardcover house requires selecting a method based on the drainage system and the distance of relocation. It is not recommended unless absolutely necessary.

I. Same-Floor Drainage (Sunken Bathroom)

The drainage pipes for same-floor drainage are located within the bathroom on the same floor, making modifications relatively convenient. Relocation can be achieved by simply extending or shortening the drainage pipes or changing their direction. This method does not require penetrating the floor slab, has no impact on the residents below, and involves relatively low construction difficulty. However, it is essential to ensure the tightness of pipe connections to prevent leakage.

II. Cross-Floor Drainage (Drainage Pipes Pass Through the Floor Slab to the Floor Below)

1. Short-Distance Relocation (10-15 cm)

   • Use of a relocation device: Cost-effective and easy to install, but the risk of blockage increases if the relocation distance exceeds 15 cm or if there are too many bends.
   • Construction requirements: The area where the relocation device is embedded must have a slope of more than 3% for proper drainage, and strict waterproofing must be done to prevent leakage to the floor below.
   • Safe distance: Relocating 10 cm a short distance is the safest option. If relocating more than 20 cm, the floor must be raised by 12 cm to increase the pipe slope.

2. Long-Distance Relocation

   • Raising the Floor: Build a new platform to embed the pipes, with a minimum pipe diameter of 110 mm and a slope maintained at 2%-3%. This method sacrifices some floor height but can solve long-distance drainage problems. If relocating more than 20 cm, the floor must be raised by 12 cm to ensure the slope.
   • Wall-Hung Toilet: The toilet is directly connected to the sewage riser and can only be relocated to the adjacent wall of the riser. After modification, the toilet is less likely to block and is suitable for both same-floor and cross-floor drainage. However, a false wall must be built, which can be combined with niche design to increase storage space. Suitable for relocations of more than 50 cm.
   • Modifying Pipes Below: Requires the consent of the neighbor below and a new waterproofing test. After directly cutting a hole in the floor slab for relocation, formwork must be installed for support. However, most residents below are reluctant to accept this, making actual operation difficult.

III. General Precautions

• Slope Standard: After relocation, ensure that the pipe slope complies with national standards (0.02) to ensure smooth drainage.
• Waterproofing: The relocation area must be re-waterproofed and undergo a closed-water test to prevent leakage risks.
• Professional Construction: It is recommended to have the work done by experienced plumbers to avoid pipe blockage or structural damage due to improper construction.
• Relocate Only When Necessary: If not particularly necessary, try to keep the toilet in its original position to reduce construction complexity and potential risks.