1、卫生间地面先做找平
要更换卫生间的地砖，在将原有地砖凿去之后，一定要先用水泥砂浆将地面找平，然后再做防水处理。这样可以避免防水涂料因薄厚不均而造成渗漏。
To replace the bathroom tiles, floor tiles after the original chipped away, be sure to leveling the ground with cement mortar, and then do water treatment. This avoids waterproof coating due to uneven thickness resulting in leakage.
2、接缝处要涂刷到位
卫生间墙地面之间的接缝以及上下水管道与地面的接缝处，是最容易出现问题的地方。您在施工中，一定要督促工人处理好这些边边角角的地方，所有防水涂料一定要涂抹“到位”。
Seams and down the water pipes at the seams with the ground floor between the bathroom wall, is where the most prone to problems. You are in the construction, we must urge the workers deal with these corners where all waterproof coating must be applied "in place."
3、墙面处理也很重要
一般的卫生间防水处理中，墙面上也要做大约30厘米高的防水涂料，以防积水洇透墙面。但如果是卫生间的墙面是非承重的轻体墙，就要将整个墙面涂满防水涂料。
Toilet water treatment in general, has to be done on the wall about 30 cm high waterproof coating to prevent water bleed through the wall. But if it is a non-load-bearing walls of the bathroom wall light body, we should be painted with waterproof paint the entire wall.
4、防水实验一定要做
卫生间施工完毕后，将卫生间的所有下水堵住，并在门口砌一道25厘米高的“坎”，然后在卫生间中灌入20厘米高的水。在24小时后，您再检查四周墙面和地面有无渗漏现象。
After construction is completed bathroom, toilet blocked all the water, and at the door assemble a 25 cm high "Hum", and then poured into 20 cm high water in the bathroom. In the 24 hours after your four weeks and then check for any leaks in the walls and floor phenomenon.
5、保持下水通畅
卫生间中所有的下水管道，包括地漏、卫生洁具的下水管等，都要保持通畅。
All bathroom drains, including floor drain, sanitary ware under the water, they have to keep them open.