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Quite possibly. So it's best to deal with water leaks to avoid big accidents.
In general, I will do the waterproofing again by myself, and then do a closed water test, and communicate with the downstairs to see if there are any signs of leakage.
The simplest and most effective way to do a closed water test. >>>More
Yes, if the leak is bigger, it will flood the households below, because the households below are flooded, and tens of thousands of hundreds of thousands of compensation are often generated.
My shower room and leak are 2 meters away and the water will flow under the floor tiles? It can't be, right? --This possibility is not ruled out. >>>More
If the waterproof layer under the tile is in place, it doesn't matter, if you don't worry, you can buy cologne fine seam glue to paint the gaps, even if the waterproof layer is not done, it will not leak.