What is the waterproof height of the bathroom?

In general, the shower area is at least 1800 mm high, and other walls are 500 mm high. The requirement of the waterproof standard of the bathroom is that the floor should be complete and the wall should be at least 1.8 meters high. If it is a light wall, it must be full height. As for the material, waterproof slurry for kitchen and bathroom is recommended.