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Yes, it is recommended to use an elastic waterproof coating. However, you should pay attention to the waterproofing treatment of various nozzles, which is the most likely to cause problems, so you need to do it more carefully.
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Redo the waterproof coating + protective layer on it.
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Then you're going to have to redo the waterproofing layer.
It's okay, just ask the decoration company to do it again when the time comes, and you generally have to do it again.
The developer has done its part, as for your concerns in the future, it is not easy to say, it is generally 8 to 10 years.
When the bathroom is connected, the developer has done waterproofing, and at this time, you can do a closed water test to verify that there is no problem with waterproofing before taking over the room. But after receiving the room, you need to decorate, in the decoration will be the bathroom water and electricity transformation, and then the waterproof layer of the bathroom has basically been destroyed, so it is recommended that it needs to be re-waterproofed, otherwise it is easy to leak over time. >>>More
If it has been waterproofed before, if it does not fall off, there is no need to shovel it off. If you are afraid that the waterproofing will not be done well, you can redo the waterproofing on it.
Before the wall tiles are pasted, quickly treat the waterproofing facilities before laying the underfloor heating and water pipes.