The whole shower room should not be waterproof

The waterproofing of this bathroom is recommended that you still do it.

The waterproofing made by the developer is generally unreliable, why do you say that, because your bathroom will definitely be changed when it is renovated. If you don't change it, you'll always have to install a toilet, and then it's going to leak, and your whole shower room will have to be demolished, and your floor will be smashed.

Besides, you can't afford to do it again now, and it won't cost you a lot of money. NOW WHEN YOU DO IT AGAIN, YOU CAN DO 300MM IN THE WATER HEIGHTBecause the wall will generally not have any damage, which can reduce your expenses, and finally to everyone who will see this problem in the future, whether the home decoration has been waterproof before, before laying the floor tiles, you must do waterproofing again, which will save you a lot of trouble. If you finish renovating the bathroom, if there is a leak, the developer will not care about you.

It must be done, not omitted.

Fill the ground with water first, try it for 3-5 days to know how waterproof it is, if it's good, you don't need to do it, you can do it directly.