Relocation of Toilet Position in New Home Renovation

The position of the toilet (toilet bowl) can be relocated during the renovation of a new home, but appropriate methods must be selected based on the relocation distance and drainage type, and construction specifications must be strictly followed to reduce the risk of blockage.

I. Selecting Methods Based on Relocation Distance

1. Short-Distance Relocation (≤2 meters)

   • 10-15 centimeters: Prioritize the use of a toilet offset flange, which is cost-effective and easy to install. However, ensure that the pipe slope complies with national standards (0.02) to avoid poor drainage due to insufficient slope.
   • 15-20 centimeters: The floor needs to be raised by approximately 12 centimeters to ensure drainage efficiency by increasing the pipe slope. If the ceiling height is low, carefully evaluate spatial comfort.
   • Relocation distance limit: The offset flange should not exceed 2 meters in length. Relocation beyond this distance is prone to blockage, and other methods are recommended.

2. Long-Distance Relocation (>2 meters)

   • Raised floor method: Build a new platform to embed pipes. The pipe diameter should be ≥110 millimeters, and the slope should be controlled between 2%-3%. This method sacrifices ceiling height and is suitable for units with a ceiling height of ≥2.8 meters.
   • Wall-mounted drainage method: Pipes are laid along the wall without raising the floor, suitable for relocations of ≥50 centimeters. Both same-floor and inter-floor drainage systems can adopt this method, but a false wall needs to be built to hide the pipes. This can be combined with niche design to increase storage space.
   • Downstairs pipe modification method: Neighbor's consent is required, and a new waterproofing test must be conducted. This method involves thorough modification but has high coordination costs, suitable for scenarios with extremely high space requirements.

II. Handling Methods for Different Drainage Types

1. Same-Floor Drainage (Sunken Bathroom)

   • The bathroom floor is approximately 40 centimeters lower than the floor level, and the drainage pipes are located within the backfill layer of the unit. The length or direction of the pipes can be directly adjusted without damaging the floor slab structure, offering high flexibility for modifications.

2. Inter-Floor Drainage (Drainage Pipe Through Floor Slab)

   • In a bare unit, drainage pipes are visible at the top of the bathroom. When using an offset flange, the floor slab needs to be raised to embed the pipes, which may affect the ceiling height. If choosing the wall-mounted drainage or downstairs pipe modification method, evaluate feasibility based on specific conditions.

III. Key Considerations

• Slope standard: Regardless of the method used, the pipe slope must be ≥0.02 to reduce the risk of blockage.
• Waterproofing test: After modification, conduct a 48-hour closed water test to ensure no leakage.
• Pipe material: Prioritize the use of PVC pipes, which have a smooth inner wall and low drainage resistance.
• Professional construction: It is recommended to have the work done by experienced plumbers to avoid rework due to improper construction.