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How to Relocate a Toilet

Admin September 27, 2026

Common methods for relocating a toilet include using a toilet offset flange, rerouting pipes, raising the floor, or using a wall-mounted toilet. However, a comprehensive assessment based on the drainage method, relocation distance, and construction conditions is necessary, and it is not recommended to proceed lightly.

1. Using a Toilet Offset Flange

A toilet offset flange is a common tool for short-distance toilet relocation, suitable for scenarios with same-floor drainage and a short relocation distance (generally not exceeding 20 centimeters).

  • Operation Steps:
    1. Measurement and Selection: Choose an offset flange of the appropriate length based on actual needs (e.g., 7.5 centimeters or 10 centimeters). Adjust the angle according to the toilet width (about 40 centimeters) and the available space to ensure no obstructions (such as cabinets or shower enclosures) on either side of the relocated toilet.
    2. Positioning and Marking: Mark the new position by drawing lines based on the relocation distance, centered on the original drain outlet. Ensure that the toilet, when installed, can cover the offset flange connection and maintain a distance of more than 10 centimeters from the angle valve.
    3. Cutting and Installation: Cut the floor along the marked lines (to a depth of about 1 centimeter to avoid damaging buried water pipes). After cutting, seal the connection with a leak-proof compound. When installing the offset flange, ensure it is level and straight, with a depth of 9 centimeters, and add a sealing ring to prevent leaks.
  • Precautions: The offset flange will change the drainage slope, potentially increasing the risk of blockage. Regular pipe cleaning is necessary. If the drainage is on a different floor (with drainage pipes on the ceiling below), consult with neighbors on the construction plan.

2. Rerouting Pipes

Suitable for long-distance relocation or scenarios with drainage on a different floor, requiring the floor or slab to be broken to lay new drainage pipes.

  • Operation Points:
    1. Assess Drainage Method: For same-floor drainage, pipes can be laid directly by cutting the floor. For drainage on a different floor, consult with the occupants below to modify pipes from their ceiling.
    2. Slope Control: Maintain a slope of 2%-3% for the new drainage pipes to ensure smooth drainage and prevent water accumulation.
    3. Waterproofing: After cutting, apply waterproof coating and conduct a 48-hour water closure test to prevent leaks.
  • Limitations: Construction is complex and costly, and may involve property approval or neighbor coordination.

3. Raising the Floor

Hide new drainage pipes by raising the bathroom floor (about 10-15 centimeters), suitable for long-distance relocation where floor height allows.

  • Advantages: Solves slope issues and reduces blockage risk.
  • Disadvantages: Sacrifices floor height, requires repaving floor materials (such as tiles), and has a longer construction period.

4. Using a Wall-Mounted Toilet

A wall-mounted toilet (rear-discharge type) hides the drainage pipe in the wall, offering flexible relocation and space savings.

  • Suitable Scenarios: Ideal for small apartments or scenarios requiring significant toilet position adjustment.
  • Requirements: Pre-embed drainage pipes in the wall. Confirm that the wall is non-load-bearing before construction and plan the water tank position in advance.

Key Reminders

Toilet relocation involves modifying the drainage system, which may cause blockage, leakage, and other issues. Before construction, confirm the drainage method (same-floor/different-floor), relocation distance, and property regulations. It is advisable to consult a professional plumber or decoration company first.