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There are two main workarounds:
1. Raise the ground, use a shifter for displacement treatment, and then install a toilet;
2. Buy a wall-hung toilet (wall row) to solve the problem.
Generally, the construction size of wall brick sand and plaster leveling, tile thickness and other construction dimensions is 3-4 cm, which can be constructed; If it is a home decoration, it is recommended to use cement board to make pipe encapsulation, and then put bricks.
Judging from the situation you described, it is caused by a crack in the waterproof layer on the upper floor. >>>More
There is no floor plan, and the columns should be set up to see the upper and lower structure drawings. The landlord problem is not clear. There is a specialization in academics.
Let's just make it three centimeters high, there is no need to level.
Be careful not to get the pipes, and then wrap the pipes in combination with the installation after tearing down the walls.