2. The roofing construction destroyed the ground waterproofing.
This situation is widespread and the solution is simple. Because it is simply the leakage problem caused by the poor actual operation of the roof, you can immediately consult the upstairs residents to deal with this leakage problem and repair the ground waterproofing.
3. Causes of water leakage in buildings caused by pipelines.
Because each floor must be connected to the pipeline, perhaps the contact between the pipeline and the concrete floor is not completely closed, which will also lead to water leakage on the roof of the house.
What should I do if the building leaks?
1, waterproof coating used in walls and roofs is the key, and the actual effect is not very good. Then drain pipes and polypropylene cloth should be used for roof leakage, which is good for practical operation, but its service life is short, so it should be done again in 3 to 5 years. On the other hand, the key problem in China is subgrade ground settlement, which causes wall cracking and is still developing. The ground settlement of subgrade is a slow whole process, changing by 100 mm every year, but the reflection surface to the roof has little effect on the overall structure of the house, but a 100 mm will lead to water leakage. So I suggest that it is better to use three oils and two felts as a whole. Increasing the cost of insulation board is equivalent to adding a simple room. Three kinds of oil and two kinds of linoleum are used to build roofs.
2. Residential owners can sign supplementary agreements on quality maintenance outside the warranty period of commercial and residential buildings when signing product sales contracts and warranty agreements with real estate agents, so as to restrain each other's personal behaviors. The real estate agent will deduct a certain maintenance fee from the community owner according to the specific situation, and the community owner can only pay the real estate developer if the maintenance is specific.
The above is the basic information I collected for you about the causes of water seepage in buildings and the countermeasures. There are many cases of water leakage on the top floor of buildings with a long history, and no waterproof coating can guarantee it for decades. So pay attention to the maintenance and repair of the house. If the top floor of the building you just bought leaks, then you need to find a property management, because this is their obligation.