First of all, you bought a second-hand house. Your house has been decorated before this. Downstairs, it is said that the ceiling leaks. First of all, you should find out which part is leaking, and secondly, whether your home is leaking. In some cases, water seeps slowly from the outer wall. Then, the balcony, bathroom and kitchen of the house are required to be waterproof, while the living room, dining room and bedroom are not required to be waterproof. If the balcony, bathroom, kitchen leaks, it is indeed a problem with the waterproof layer, but this is caused by inadequate waterproof during decoration. If there is water leakage in the living room, dining room and bedroom, and these places are not required to be waterproof, then it depends on whether there is water in these places in your home or whether the water pipes under the floor tiles are damaged. Because the property has to deal with these leakage problems for a long time, they usually have to analyze them through experience. As for the responsibility of water leakage, you should either bear it yourself or negotiate with the original owner for compensation. Property management is not responsible for this. According to what you said, you should find the engineering team downstairs to do it. If the project is still leaking, isn't it necessary to make a comeback? What you said is not perfect. The correct way is to ask the trustworthy engineering team downstairs to do it. You pay the money, and then do a waterproof test on the parts you have done, that is to say, fill these parts with water (generally, the kitchen and balcony are 15 cm deep, and the bathroom is 30 cm deep, but the bathroom should pay attention to the waterproof treatment of the wall around the shower room, which is at least 200 cm high from the ground), and then let the water soak for 72 hours (only 24 hours is required by the state).

Hope to adopt, thank you.