When the old house is renovated, do you need to do secondary drainage when the bathroom floor is rai

The "cement mortar" you are talking about should be to use the dry paste method to pave the floor tiles, so that the ground will be a few centimeters higher. If you want to make it a little lower, you can use the wet paste method to lay the floor tiles. It is directly mixed with cement and water to form a cement slurry, and then scraped on the back of the floor tile to bond with the ground.

Secondary drainage is a drainage method to prevent leakage of water pipes buried in the bathroom and water seepage from the floor to the owner's house downstairs. Because the toilet will leak into the caisson in the case of long-term use, and then accumulate in the caisson, the cement will more or less leak downstairs in the long-term soaking, and the secondary drainage just solves this problem. When decorating, the owner should pay attention to the water pipe laid in the room and it is best to seal it with asphalt, so that even if the interface position is not completely sealed during construction or has been used for a long time, it will not leak. >>>More

Why is it recommended that caisson toilets must be drained twice?

The ground floor drain is a primary drain, and the underground floor drain is called secondary drainage. Because the toilet drainage is generally discharged through the floor drain, but there is also water that will seep directly into the caisson from the floor tiles, day after day, more and more water in the caisson, if the secondary drainage is done, the caisson can be successfully discharged. >>>More

You can use JS, polyurethane, Cao Yangbao, Jintang water does not leak, plugging king, South Korea Shuangxiong, the dry area is 300 high, the wet area and the adjacent wall of the bedroom study are also 1800 high, waterproof and do over the threshold, the root of the wall is rounded, the pipe is flanged, the water is removed after the 24-hour water storage test without leakage, and then a layer of mortar protective layer is made, and finally the wall and floor tiles are pasted. A stone base under the door cover is preferred.