The top floor is leaking. How to be waterproof again?

If it is a commercial house, you can find a property management solution. If it is not solved, you can complain to them. If the roof leaks, it does not belong to the scope of property management and can only be repaired by itself, then first find the leaking place, look at the leaking area, and then see what can be done to remedy it. Find the leaking place. If the area is small, it is not waterproof. If it is a crack, you can cut a little more, make it bigger, and fill it with cement again. After filling in the gap, put cement ash on it. The common method of roof leakage is paving asphalt, which is generally aimed at the situation that the leakage area is relatively small, the construction is simple and the price is relatively cheap.

If the area is relatively large, the waterproof layer can no longer achieve waterproof effect, and can only be waterproof again. Waterproofing is best done in hot summer. The roof is leaking. In many cases, paving asphalt is only a temporary measure. After taking some waterproof measures, the effect is not very good, and it will leak rain. You can lay colored steel tiles with the best effect, but the cost is relatively high. If the roof leaks, you can build a small attic on the roof, which can not only prevent water leakage, but also shade the sun and avoid the top floor from suffering in summer. Roof water leakage is directly related to roof water accumulation. Especially old buildings, waterproof and anti-aging, drainage should be smooth. In addition, if there are wild plants on the roof, it is easy to leak, and if planted, it will affect the waterproof effect.

Find the leaking place. If there is a small gap in the leak, you can't water it with waterproof material. Dig a V-shaped pit at the seepage joint with a chisel or grinder, and then pour the concrete slurry mixed with fine sand and cement into the pit. If the roof cracks seriously and needs to be overhauled, it is generally necessary to hire professional leak-trapping personnel for maintenance. How to achieve better waterproof effect when dealing with roof leakage? If there is a large area of water leakage or multiple water leakage points on the roof, please ask professionals to check whether there are cracks. After the cracks are treated according to the previous scheme, the whole roof will be covered with waterproof coiled material. If you want to strengthen the waterproof effect, you can also cover it with insulation board. Because the height of the insulation board is above 20 cm, it can achieve the dual effects of protecting the 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. If there are cracks and water seepage on the wall, professional construction teams generally use hanging baskets, and maintenance personnel will work on the outer wall.

You just need to remove the leaking part 2~3 cm deep and clean it. You can pour it with asphalt. Now there is a finished asphalt coating. There is almost no leakage on sunny days. If there is a waterproof layer, it will be more troublesome. It is necessary to remove the surrounding waterproof layer and make it waterproof again. Pay attention to the strengthening layer at the junction with the original waterproof layer when doing it. There are many ways to deal with leakage, so we should find some professional anti-leakage companies to deal with this problem. Roof leakage of urban buildings is closely related to building quality. The roof leakage of general buildings is caused by weak foundation and floor problems, which are problems that developers need to solve. Therefore, the roof leakage of urban buildings must be handled by property management companies. This is a good way to deal with waterproofing.