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It may be that there is a leak in the replacement water pipe, and it happens that the water absorption rate of the floor tiles is relatively high, so there will be a watermark.
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There is water seepage, and there may be a leak in the water pipe.
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Sometimes it's like this in my family, and after a while it won't be there.
As follows: 1. There is this possibility, but it is not excluded that it is caused by moisture. >>>More
If there is a watermark on one or several pieces of the part, wipe it dry repeatedly, and it still appears after a while, then you should suspect that there is a leak in the water pipe under the bathroom floor tile.
The floor tiles that have just been laid in the bathroom have not been used, and there will be no more after the watermark is wiped clean.
It may be that when laying floor tiles or wall tiles, the water pipe is accidentally broken, such a situation, you can only ask the plumber and the tile master to solve the problem, they must have a way.
It depends on the situation. It could be a leak in the upper floors, a broken pipe in the wall, or a damp weather.