Can Toilet Bowls Be Moved?

Toilet bowls can be moved, but the appropriate method must be selected based on the moving distance, and construction specifications must be strictly followed.

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

If the moving distance is within 10 cm, the relative position between the toilet and the drain can usually be adjusted directly, with relatively low risk. For distances between 10-15 cm, the use of a toilet offset flange is recommended: By installing a specialized offset flange (such as a PVC elbow connector) between the toilet drain and the original drainpipe, slight positional adjustments can be made. However, note the following:

• Pipe Bend Limitations: The offset flange increases the number of drainage bends. If the original pipe design is unreasonable (e.g., small pipe diameter or insufficient slope), it may lead to blockage risks. It is advisable to prioritize drainpipes with a diameter ≥110 mm and ensure that the total number of bends after installing the offset flange does not exceed two.
• Slope Requirements: After relocation, the drainage pipe slope must be maintained at ≥0.02 (i.e., a drop of 2 cm per meter) to ensure drainage efficiency. If the original floor slope is insufficient, local floor elevation may be required to compensate.

2. Medium-Distance Movement (15-20 cm)

When the moving distance exceeds 15 cm, raising the floor level is more suitable: By elevating the floor height in the toilet installation area (usually requiring an elevation of more than 12 cm), the drainpipe can be relaid and the slope adjusted. The specific steps are as follows:

1. Remove the Original Floor: Chisel away the original floor finish (such as tiles or cement layer) in the toilet installation area to expose the structural layer.
2. Lay New Drainpipes: Relay the drainpipes according to the moving direction, ensuring a pipe diameter ≥110 mm and a slope that meets the 0.02 standard.
3. Pour Concrete Sub-base: Pour a fine aggregate concrete sub-base around the drainpipes to form a new floor foundation. The sub-base height must cover the drainpipes and reserve space for toilet installation.
4. Waterproofing Treatment: Apply waterproof coating (such as polyurethane waterproof coating) on the sub-base surface and around the toilet, and conduct a 48-hour closed water test to ensure no leakage.

3. Long-Distance Movement or Complex Renovation

If relocation exceeds 20 cm or involves renovation of the main drainage pipe (e.g., changing the drainage direction or connecting to the building's main drainpipe), professional plumbing work is mandatory. Such renovations require attention to the following:

• Structural Safety: Avoid damaging the load-bearing structure of the floor slab, especially reinforced concrete floor slabs.
• Waterproof Sealing: The connection between the new drainpipe and the original pipe must use specialized sealing rings or hot-melt welding to prevent leakage.
• Compliance: The renovation plan must comply with the requirements of the Building Water Supply and Drainage Design Standard (GB 50015-2019) and be reported to the property management in advance (if involving the public drainage system).

Key Reminder: Regardless of the method used, a "water flow test" must be conducted after relocating the toilet to verify drainage performance. Quickly pour 5 liters of water into the toilet and observe whether the drainage is smooth and whether there is any backflow or odor. If abnormalities occur, the pipe slope must be adjusted immediately or blockages cleared.