Relocation of Toilet in Rough-finished Bathroom

The position of the toilet in a rough-finished bathroom can be relocated, but an appropriate method needs to be selected according to the drainage type, and relevant issues should be noted.

First, determine the drainage type of the bathroom. There are two types of bathroom drainage: same-floor drainage (in a sunken bathroom where the floor is about 40 cm lower than the floor level of the rest of the house, and the drainage pipes are within your own unit, making it convenient for modifications) and inter-floor drainage (where the drainage pipes pass through the floor slab for drainage). The way to tell is: when the rough-finished house is delivered, if you look up and see water pipes above the bathroom, it is inter-floor drainage; if not, it is same-floor drainage.

• Toilet relocation in same-floor drainage: It is relatively simple. You can directly relocate and change the drainage pipes. For a sunken bathroom, you can choose to directly lengthen or shorten the pipes for relocation.
• Methods for toilet relocation in inter-floor drainage:
  • Using a toilet offset flange: The modification is relatively simple, but the toilet cannot be moved too far; otherwise, it is prone to clogging. It is not recommended to move it more than 2 m (some say the maximum should not exceed 40 cm). It is best to create a drainage slope. A slope of more than 3% should be made at the place where the offset flange is pre-buried to facilitate drainage, and waterproofing must be done.
  • Changing from floor drainage to wall drainage: Connect the toilet directly to the sewage riser (the toilet can only be moved to the adjacent wall of the sewage riser, not to the opposite wall). After the modification, the toilet is less likely to clog. This method is suitable for both same-floor and inter-floor drainage. However, changing to wall drainage requires building a false wall, which can be combined with niches to create storage space during decoration.
  • Directly modifying the sewage pipe in the neighbor's unit: Relocate it to the desired position. If the neighbor agrees, the modification difficulty is low, but it is difficult to get the neighbor's consent.
  • Re-drilling a hole in the floor slab for relocation: Subsequent吊模处理 (formwork hanging and concrete pouring for repair) is required, but most owners downstairs cannot accept this.

In addition, relocating the toilet position may involve different costs and issues such as easy clogging if the relocation distance is too far. Moreover, the relocation of the bathroom should comply with laws, regulations, and industry standards. For example, it should not be directly arranged above the bedroom, living room, kitchen, and dining room of the lower-floor occupants, and rooms or balconies without waterproof requirements should not be converted into bathrooms.