Discover the secret of waterproof leakage engineering cracking and leakage, why some house leakage do waterproof or leakage, a large part of the existence is waterproof layer leakage, a lot of people are not very familiar with waterproof layer, the impression of waterproof layer stay just waterproof master said which leakage is caused by waterproof layer, today small make up to talk with you about rigid waterproof roof cracking and leakage reasons, let's take a look.

Waterproof layer is an indispensable part of the waterproof leakage engineering, Xiaobian will be from the following six points of the rigid waterproof roof cracking and leakage reasons.

First, the rigid roof is exposed to the atmosphere for a long time. Under the long period of sun and rain, the concrete surface layer will be carbonized, leading to the waterproof layer shell, sand, causing leakage.

Second, the load of the house panel scratching and other deformation, resulting in joint displacement resulting in waterproof layer cracking and leakage.

Third, the waterproof structure of the deformation joint, the waterproof structure of the protruding roof pipe, flood structure, split joint water structure, water drop mouth waterproof and other roof fine structure treatment does not meet the standard requirements, resulting in roof leakage; in addition, due to the inconsistent deformation of the parapet, gables and the roof panel, if the junction fine structure is improperly handled, it is easy to crack in the handover site to form leakage.

Fourth, the uneven deformation and displacement of the foundation caused by the deflection difference, resulting in cracking and leakage of the waterproof layer.

Fifth, if the basic process does not pay attention to in the construction, before the seam, floating sand, stone debris and other clips in the seam are not cleared, resulting in the seam is not dense, resulting in roof leakage; in addition, the seam material adhesion, flexibility and aging resistance is poor, can not unable to adapt to the deformation of the waterproof layer and produce cracks.

Six, the evaporation of water adsorption or free water inside the concrete, so that the concrete causes the physical dry and wet deformation displacement, resulting in the cracking and leakage of the waterproof layer.If the concrete design proportion is not appropriate, the water ash ratio is excessive, the excess water in the concrete hardening process, gradually evaporated into many gaps and coherent capillary network, and becomes the roof seepage channel; too much water in the sand aggregate surface, to form a free layer of water, the capillary channel, under drying, the capillary water overflow produces capillary pressure, make the concrete 'capillary shrinkage' shrinkage phenomenon, resulting in surface cracking.

The above is the reason of the waterproof layer cracking and leakage of small bian for everyone, it can be seen that it is very important to do a good job of waterproof layer, waterproof layer accounts for a large part of the waterproof leakage project, waterproof layer does not do waterproof quality can not be guaranteed.