Reveal the secrets of waterproof layer cracking and leakage in waterproof and leak-patching project. Why are some houses leaking waterproof or leaking water? A large part of them are leaking water from waterproof layer. Many people don't know the waterproof layer very well. The impression of staying on the waterproof layer is just that the waterproof master said that which leakage is caused by the waterproof layer. Today, Shandong Waterproof Company Xiaobian will talk to you about the causes of cracking and leakage of rigid waterproof roof. Let's take a look.


Waterproof layer is an indispensable part of waterproof and leak-trapping engineering. Waterproof and leak-trapping editor will talk about the causes of cracking and leakage of rigid waterproof roof from the following six points. First, the rigid roof is exposed to the atmosphere for a long time, and under the long-term sun and rain, the concrete surface layer will be carbonized, which will cause the waterproof layer to shell out and sand out, resulting in leakage. Secondly, under the load, the roof panel is deformed such as deflection, which causes the displacement of joints and leads to cracking and leakage of waterproof layer. Third, roof details such as deformation joint waterproof structure, pipeline waterproof structure extending out of the roof, flashing structure, split joint waterproof structure, spout waterproof do not meet the specification requirements, resulting in roof leakage; In addition, because the deformation of parapet, gable and roof panel is inconsistent, if the detail structure of the junction is not handled properly, it is easy to crack at the junction and form leakage. Fourthly, the joint deformation and displacement caused by differential settlement and deflection of the foundation leads to cracking and leakage of the waterproof layer. Fifth, if we don't pay attention to the basic process of roof caulking in the construction, before caulking, the floating sand, stone chips and other inclusions in the caulking are not cleared away, resulting in the caulking being not dense and leading to roof leakage; In addition, the caulking material has poor cohesiveness, flexibility and anti-aging ability, and can not adapt to the deformation of waterproof layer and produce cracks. Sixth, the evaporation of absorbed water or free water inside the concrete causes the concrete to cause physical deformation and displacement of dry and wet, leading to cracking and leakage of the waterproof layer. If the proportion of concrete mix design is improper and the water-cement ratio is too large, the excess water will gradually evaporate to form many voids and interconnected capillary networks during the concrete hardening process, which will become the seepage channel of the roof. In addition, too much water forms a layer of free water on the surface of sand and gravel aggregate, and capillary channels will also form between them. Under the action of drying, the water in the capillary holes escapes to generate capillary pressure, which causes the concrete to dry in the' capillary shrinkage' state, leading to surface cracking. The above is the reason for cracking and leakage of waterproof layer summarized by waterproof and leak-trapping Xiaobian for everyone. It can be seen that it is very important to do a good job of waterproof layer, which accounts for a large part of waterproof and leak-trapping project, and the waterproof quality can not be guaranteed if the waterproof layer is not done well.

In a word, the above is the secret of cracking and leakage of waterproof layer in waterproof and leak-trapping engineering revealed by waterproof and leak-trapping editor. If you want to know more about waterproof layer, please pay attention to waterproof and leak-trapping editor. Your call is a better recognition for us. Let's join hands in swimming in the ocean of waterproof knowledge!