Clay Di bathroom; did a closed water test. Why is my bathroom still leaking?

Clay Di bathroom; did a closed water test. Why is my bathroom still leaking? A few days ago, the child in the bathroom ran out of the bathroom with his pants, shouting 'Dad, there is water on my head'. When I walked into the bathroom, I saw water droplets in the gap of the ceiling. I found the property to open the ceiling and inspect it. It turned out that the neighbor's house upstairs was leaking. During the renovation, they were all waterproofed, and the closed-water experiment was done. Why does the bathroom still leak? I want to find out. 1. What needs to be waterproofed at home is generally known. Bathrooms and kitchens are places that must be waterproofed. Basements, balconies, and even underfloor heating should also be waterproofed when necessary. 2. Waterproof construction The specifications should be done well. Don't look at the simple brushing of a layer of waterproof coating. If the construction is not in place, it will also cause water leakage. There are the following steps to properly regulate the steps. 1. Basic level treatment Before the waterproof treatment, the ground must be leveled first, which may cause cracking and leakage caused by uneven thickness of the waterproof coating. Floor drains, wall corners, pipe heels and other joints should be painted with high elasticity and flexible waterproof. If the toilet is displaced, be sure to brush several times on the internal corner between the wall and the ground. This place is most likely to leak. . 2. The first water-proof painting should be done in the order of from the inside to the outside, up and down, and then left and right. The painting should be even and the thickness of the painting should meet the requirements of the waterproof products used. The recommended painting height for the bathroom is 1800mm. If the bathroom is separated from wet and dry, the waterproof height of the wall in the dry area is recommended to be 1200mm. 3. When the second waterproofing is applied for the second waterproofing, it is necessary to make sure that the first waterproofing is completely dry and forming a film, and the direction is opposite to the first waterproofing. If the first waterproofing is not When it is dry, start the second time of waterproofing. Then there will be problems in the later stage of the waterproofing, and the effect will not be good. 4. Closed water test For closed water test, the room should be filled with water, the water should have enough volume, the water storage depth should not be less than 20mm, generally 30-50mm, and the time should not be less than 24 hours. After that, you must go to the neighbor's house downstairs to observe whether there is water leakage on the roof, and no water leakage is regarded as qualified. 5. Waterproof layer protection In order to prevent the subsequent construction from destroying the waterproof layer, after the closed water test, a protective layer should be laid on the surface of the waterproof coating. The protective layer should completely cover the waterproof layer, without any omissions, be firmly combined with the base layer, without cracks, bubbles, and falling off. Normally, use a thin layer of cement slurry for protection, and the thickness should not exceed one centimeter. The key is to prevent workers from stepping on them as much as possible during the later stage of construction. 3. The water leaks after the closed water test, find the reason and repair the situation 1. Some homes have been renovated for one or two years, and there is no water leakage during the period, but the toilet leaks. Reason 1: The biggest possibility is that the new building has a large expansion and settlement degree, which exceeds the waterproof stretch, which will tear the waterproof and cause water leakage. Reason 2: It may be that the purchased waterproof coating is a counterfeit, water-resistant and corrosion-resistant It is not strong, and after a long time, there will be water leakage. Reason 3: There is another situation that the sewer pipe is displaced. If the sewer pipe must be displaced, the tank should be painted for waterproofing first, and then cement should be used. The mortar completely covers and fixes the sewer pipes to ensure that the waterproof coating is painted into a film and cannot be painted on the pipes. Situation 2: The closed-water test was no problem. The water leaked downstairs within a few days of moving in. Reason 1: It may be a problem during the bricklayer construction process. Due to the early leveling of the ground or the large curvature of the corner of the wall, the bricks cannot be dropped during paving. In order to facilitate the construction, the raised parts are shoveled away, resulting in water leakage; 3. There is no problem in the closed water test, the door is soaked, and the bathroom door panel is black. Reason 1: No waterproof water-retaining edge is made. At present, most developers reserve water-retaining edges when making the bathroom floor. The bathroom floor is 3-5cm lower than the floor of the room, which effectively blocks the water from the gray layer of tiles from going outside. . A small number of developers have not done this process. The floor of the bathroom is the same level as the floor of the living room. It is necessary to make a water retaining edge during the decoration process to avoid water overflowing the bathroom and the door and floor to be soaked. The gain is not worth the loss. Reason 2: The waterproof door opening of the bathroom is not turned up or turned over. Situation 4: Within a few days of check-in, the bathroom wall is damp, or the wall opposite the door is moldy. Reason 1: Waterproof painting is uneven, and there is trachoma on the wall. Reason 2: The waterproofing of the bathroom door was not properly treated or the water retaining edge was not made, and the water vapor followed the floor gap to the opposite wall, causing the wall to become moldy. Situation 5. The bathroom door at home is a set door, and the bottom of the door cover rises up. When waterproofing, the doorway also turned outwards or upwards. Is there a problem with the waterproofing? In the process of construction, the process of pressing stone (the side cover of the door is located on the threshold stone) was not used to treat the door cover, and the water vapor entering the door cover caused the bottom to rise. (