Repair skill
In view of the cracks in the external wall, the wall should be cleaned first to ensure that there is no floating dust. Uneven places should be filled with cement mortar, and cracks should be grouted. After the waterproof layer is completely dry, choose materials with good waterproof performance, such as tiles, to repair the outer wall to ensure that the inner layer is not affected.
Root of the problem
In addition to repair skills, it is also critical to understand the root cause of the problem. For example, substandard construction technology may lead to cracks and water seepage. For example, the hole was not blocked with waterproof mortar before plastering, or the mortar plastering method was improper, which led to the hollowing and cracking of the external wall. Too smooth base or insufficient strength of cement mortar and improper maintenance may increase the risk of cracking. At the same time, it is not suitable for plastering construction when the temperature is too low (such as minus 5 degrees).
preventive measure
To solve the problem of external wall cracking and water seepage, it is necessary to comprehensively consider repair methods and preventive measures. For example, before construction, the base should be inspected to ensure that the flatness and strength meet the standards. In the process of construction, attention should be paid to plugging holes with waterproof mortar and correct plastering methods. After the completion of construction, maintenance should be carried out to ensure that the waterproof layer is completely dry. In addition, it is not suitable for plastering construction when the temperature is too low.