Let's analyze who will fix it. If it is a single-family villa, the roof part is your private property, and you need to repair it yourself after the warranty period (it must have passed, and the warranty period is in two books); If the roof of a high-rise building leaks into your house, read "two copies" first when buying a house. Roof waterproofing is generally guaranteed for 5 years. If there is no cost problem for non-man-made damage, the developer's construction unit will repair it (they can also entrust property maintenance, but it depends on whether there is authorization or express in the two books);
Now you probably understand why the property is wrangling, and take the "two books" and the "preliminary property agreement" to the property department of your local housing management department to respond; Use the media; Start other owners in similar situations (I don't think this thing in your community is like a case)
I hope it will be settled soon.