First of all, the housing maintenance fund clearly stipulates that it must be used for the public part of the house. It is impossible to use the housing maintenance fund to repair the indoor damage of your house. Secondly, the roof drains slowly. What is the reason? If the drainage is too slow due to the blockage of the roof drain, the property will be responsible. If the drainage is slow because the drainage pipe is small, the development unit will bear it; If the drainage pipe is large enough, it is usually a DN 1 10PVC pipe, and DN75 can also be used if the roof area is small. Moreover, the property also cleaned the drainage pipe in time, which was simply caused by excessive rainfall. The owner should bear the responsibility. \x0d\ I make myself clear? \x0d\ The warranty period for roofing with waterproof requirements is 5 years.