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The cost is borne by you, because the junction between the third and second floors is not leaky, because you have to make other changes to cause a certain amount of leakage, so people are not responsible. Of course, you can also negotiate, if you can, you can use Golga waterproof paint to redo it, I also use this.
The bathroom generally does not have a load-bearing wall, and the ordinary partition wall will not affect the change position.
There is no problem with load bearing. The key is that the channel steel is dismantled and installed steadily, and is in close contact with the wall and roof.
How big is the opening?
If it is not big, it will not affect the whole structure, if it is larger than 30 * 30 cm, it will be reinforced. >>>More
Not really.
The same needs to be reinforced. >>>More
The weight of the electric water heater is about 20 kg, and it is about 60 kg after filling with water, and the general wall can be hung up.