Is the property responsible for waterproofing the building area?

Relevant laws are: (Order of the Ministry of Construction of People's Republic of China (PRC)) No.80, which stipulates that the warranty period of building roof waterproofing is 5 years.

You said the sixth floor was the top floor? The top floor is part of the 5-year warranty.

But if it is the middle floor, it is necessary to analyze in detail the causes of water leakage in the leaking parts, because it may be because the decoration has damaged the waterproof, and the renovated room will be responsible for that reason.

In addition, if the situation is serious, you can apply for a special maintenance fund to carry out maintenance first, and urge the practitioners to make up for the use of this maintenance fund during the warranty period.