General water leakage mainly includes gutter leakage, cornice leakage, bathroom caisson leakage, kitchen ceiling leakage, bay window leakage, ceiling leakage, external wall leakage and so on. The main causes of water leakage in these buildings are related to the following aspects:
(1) waterproof material
If the quality of waterproof material is not up to standard, or the waterproof material is aged and invalid due to the erosion of wind, frost, snow and rain, water leakage may occur. It is recommended to use materials with better brands when decorating, and don't rework the decoration again to save money.
(2) External factors
Buildings have a warranty period, and the resistance of waterproof layer deteriorates with time. Due to environmental factors, such as the change of weather, the pipeline will expand with heat and contract with cold, and the temperature difference will also cause the external wall concrete to dry and shrink, resulting in cracks. , causing the waterproof layer to bulge and crack.
Foundation subsidence is the main cause of cracks caused by the subsidence, inclination and displacement of open caisson in toilet.
(3) Improper construction
If holes are made in the wall during the decoration process, the waterproof layer will be damaged, or the surface of the overlapping parts of the waterproof layer is unclean, dusty or polluted, and sand particles and sundries are entrained during the construction, resulting in poor bonding and joint falling off. If the caisson is not overhead, but filled with sand, it is also the cause of water leakage.