How to make the bathroom waterproof? How much is the wall height brushed? And craftsmanship?

First of all, the grass-roots treatment, the angle of yin and yang is made into a figure of eight, the pipe root is tightly sealed, the threshold is as high as the floor outside the bathroom, and the grass-roots level is flat within the waterproof range. Waterproof scope: the bathroom floor is 300mm according to the size of shower room and bathtub wall, and the other 450MM, and the threshold is made into the bathroom floor, generally three times (including the head road). Every time, wait for the polyurethane to dry before proceeding to the next time, a total of * *. Do a 24-hour water retention test after waterproofing to ensure no leakage before sealing. Note that when there is floor heating on the ground, the floor heating pipe needs to be waterproof, and it will be blocked when it touches the ground.