2. If your roof has passed the warranty period, but the roof belongs to * * * facilities, the property management company will use the maintenance fund for maintenance. If the developer or property refuses to handle it, you can complain to the hotline 12345 or the local construction bureau.
3. If the roof leaks due to household reasons, the maintenance responsibility shall be borne by itself.
How to repair the leaking roof?
1, find out the cause of roof leakage. First of all, we should know the cause or place of water leakage. General seepage is the main cause of roof leakage, such as concrete cracks and rust holes in metal roofs. You can determine it according to the water quality, black marks or mold in the house. If the leak is difficult to find, we can ask the assistant to water different areas at the top. At first, you can start testing from the place where there is doubt until you find the leaking place.
2. If the roof is not waterproof, just remove the leaking part by 2 ~ 3 cm, then clean it and water it with asphalt (there is a finished asphalt coating now).
3. If waterproof has been done before, it is necessary to chisel off the original waterproof layer and leveling layer, find the leakage position and chisel off the empty drum part of leveling layer. Before chiseling, use a hand-held cutter to cut the leveling layer to prevent new hollowing caused by vibration when chiseling the leveling layer. After finding the leakage position, clean it up and use polyurethane coating with a thickness of1.5 mm. ..
4. Insulation board can be laid, because the height of insulation board is more than 20 cm, which can achieve the dual effects of protecting waterproof layer and heat insulation. Families who don't want to use insulation boards can consider using steel wire mesh concrete (the technical term is called steel wire mesh fine stone concrete), and the leakage prevention effect is also very good.
5. For a flat roof, if there are obvious cracks in the roof, tenon the cracks into a "V" or "U" shape with tools, fill them up with caulking ointment, and then wrap them with waterproof coiled material above and around the cracks. If you want to strengthen the leak-proof effect, you can also lay another layer of waterproof coiled material.