What if the roof leaks and the property is not waterproof?

Hello, this matter should be raised with the owners' Committee first. Only with the consent of the owners' committee can the maintenance fund be used. If the industry committee has not been established and the property has been built for less than 2 years, please ask the property to consult with the construction unit, because it is still within the warranty period and the construction sheet is responsible for maintenance. If the residential area is more than 3 years old and has not established an industry committee, please apply to the housing and land administration where the property is located for settlement. I am engaged in the property business, please adopt it. Thank you.