Renovation Toilet Relocation

Renovating a toilet to change its position can be achieved through methods such as using a toilet offset flange, negotiating with neighbors for inter-floor drainage, same-floor drainage renovation, installing a wall-mounted toilet, or raising the floor to re-route pipes. The choice should be made based on the actual situation and strictly adhere to construction standards.

1. Using a Toilet Offset Flange
   An integrated offset flange is suitable for short-distance (within 20 cm) relocation, while a side-pipe offset flange is recommended for distances not exceeding 50 cm. For every 10 cm of relocation, at least 0.5 cm of slope should be reserved to ensure smooth drainage. If the relocation exceeds 10 cm, a straight-flush toilet should be used. Short-distance adjustments (10-30 cm) involve minimal changes and low costs but may affect flushing performance and increase the risk of clogging. During construction, a slope of 1%-3% should be reserved.

2. Inter-Floor Drainage Bathroom Renovation
   If the bathroom has inter-floor drainage (pipes located in the ceiling of the downstairs unit), you can negotiate with the downstairs neighbor to drill holes in the floor slab and re-route the toilet pipes. However, this method requires damaging the downstairs structure, and 99% of neighbors will not agree, making it practically infeasible.

3. Same-Floor Drainage Bathroom with a Sunken Slab
   If the bathroom has same-floor drainage and includes a sunken slab (structural lowered floor space), you can directly re-route the pipes within the sunken slab and place the toilet anywhere without damaging the downstairs structure or significantly raising the floor. This is the most flexible renovation method.

4. Installing a Wall-Mounted Toilet
   A wall-mounted toilet connects directly to the main vertical pipe. A sloped hole should be reserved in the wall, and a niche should be set above the water tank to hide the pipes. This method is only suitable for renovations close to the downpipe (usually ≤50 cm) and has certain requirements for wall load-bearing capacity.

5. Raising the Floor to Re-Route Pipes
   For short-distance relocations (≤10 cm), you can directly raise the floor to adjust the pipe slope. If the relocation exceeds 20 cm, the floor should be raised by more than 12 cm to increase the pipe slope. This method sacrifices ceiling height but ensures smooth drainage and is suitable for scenarios where space height is not sensitive.

Key Construction Considerations:

• After relocation, ensure the pipe slope complies with the national standard of 0.02 (i.e., a 2 cm drop per meter) to prevent drainage backflow.
• After re-routing the pipes, perform double waterproofing treatment on all joints to prevent leakage.
• The renovation process should be carried out by professionals to avoid issues such as insufficient slope or poor sealing, which can increase later maintenance costs.