Renovation: Toilet Relocation

Relocating a toilet during renovation can be achieved through methods such as using a toilet offset flange, negotiating with the downstairs neighbor for pipe relocation, utilizing a same-floor drainage sump, installing a wall-mounted toilet, or raising the floor to re-lay pipes. The choice should be based on the actual situation and ensure construction standards are met.

1. Using a Toilet Offset Flange
   Suitable for short-distance relocation (typically 10-40 cm). An integrated offset flange is suitable for relocations within 20 cm, while an edge-pipe offset flange should ideally not exceed 50 cm in relocation distance. For every 10 cm of relocation, at least 0.5 cm of slope should be reserved to ensure smooth drainage. Short-distance adjustments (e.g., 10-30 cm) involve minimal changes and low costs, but may affect flushing performance and increase the risk of blockage. A slope of 1%-3% should be reserved during construction.

2. Negotiating with Downstairs Neighbor for Pipe Relocation in Inter-floor Drainage
   If the bathroom has inter-floor drainage (pipes within the downstairs ceiling), negotiate with the downstairs neighbor to drill holes in the floor slab and reroute the toilet pipes to the desired location. However, this method requires damaging the downstairs decoration, and 99% of neighbors may refuse, making actual operation extremely difficult.

3. Bathroom with Sump in Same-Floor Drainage
   If the bathroom has same-floor drainage and includes a sump (structural lowered floor space), the toilet position can be freely moved within the sump without damaging the floor slab or relying on downstairs cooperation, making it a more flexible renovation method.

4. Installing a Wall-Mounted Toilet
   The drainage of a wall-mounted toilet directly connects to the main vertical pipe. A sloped hole must 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 where the distance to the downpipe is extremely close (e.g., within 50 cm) and has certain requirements for the wall structure.

5. Raising the Floor to Re-lay Pipes
   For short-distance moves (e.g., 10 cm), the floor can be directly raised to adjust the pipe slope; if the move exceeds 20 cm, the floor must be raised by at least 12 cm to increase the pipe slope and ensure smooth drainage. This method sacrifices floor height and requires balancing space utilization with renovation needs.

Construction Precautions:

• After relocation, ensure the pipe slope meets national standards (not less than 0.02) to avoid poor drainage or odors.
• When rerouting pipes or damaging the floor, proper waterproofing must be done to prevent leakage.
• It is recommended to have professionals carry out the construction to avoid pipe blockage or structural damage due to improper operation.