First of all, why do we see water leakage and water leakage? What are the reasons?
There are two main phenomena of water seepage. One is that the waterproof practices are not standardized, and the other is caused by man-made damage.
The issue of non-standard waterproof practices is very big. Building developers do not pay much attention in this regard. Their purpose is to hand them in at the time of handing them in. When it comes to handing them, it is all right for them, and the problem arises later. Your business, they only charge maintenance fees, but it is expensive.
The ordinary polyurethane waterproof wall is a thin layer of waterproof paint that can easily be damaged during decoration.
Second, man-made destruction and waterproofing are inherently flawless. If you don't care about it, it's easy to have problems. Man-made damage is unintentional, such as hammering, nails, etc. In fact, the waterproof layer is a thin layer of polyurethane or modified asphalt that is 1.5 mm thick.
Talk about the structure of the ordinary bathroom below
General bathroom waterproof layer construction
Above the waterproof layer
Below is a layer of 2 to 4 cm thick cement mortar screed.
Next is the concrete floor 8 - 10 cm
The bottom is also a cement mortar plaster layer 1 - 2 cm
Developer's usual practice for toilet water
This is a common practice for developers when they are going to and from the bathroom to get in and out of the water. First, drill a large hole in the concrete floor, drill the water pipe, and fill it with cement mortar after loading it. (Remember This place is Guan Jian.) In fact, they are all filled with cement mortar that does not have any water-repellent ingredients. Leakage of water pipes and seepage of water are largely problems with this.
Standard practice
It is 2 to 4 cm thick above the floor, two layers of waterproof cement mortar to find the wave of water, the surface layer is a layer of national standard polyurethane waterproof material, the provisions are three times, and now developers are two times, and is the general polyurethane . What's more, they only do it again. When they did the work, they did nothing. Most of the surface cement mortar protective layer do not do.
The treatment method after the waterproof layer is destroyed in three cases
There are three situations that we often see: A. The entrance is small and then expanded. B. Beat the bathroom partition. C. Damaged the original waterproof when changing the water pipe. In all three cases, the waterproof layer of the damage must be treated.
The above three conditions have destroyed the original waterproof
This problem is a difficult problem. After individuals change the original wall and waterproof themselves, the property company will not be responsible anymore, so we must do a good job.
Waterproof practices first and second steps
The first step: clean the foundation 2 to 4 centimeters below the original waterproof layer, water the wet wall and then wipe the high-quality water into a paste and apply it on the foundation twice. The original waterproof end and do water closure test.
The second step is to remove the protective layer of the cement mortar on the original waterproof surface. The purpose is to better connect with new waterproofing. It is enough to remove 20CM wide.
Waterproof practices third and fourth steps
The third step: to do a waterproof layer, it is best to wait for the base to dry before doing, it is best to do the waterproof and the original waterproof material to one, must be carefully tested after doing a good job
Step 4: The cement mortar protective layer can be used after two days without any problems.
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