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Waterproof Raiders in the rainy season: find the interior decoration of the property

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The recent heavy rains have made many owners taste the pain of seepage in their homes. What is the reason? How to solve it? Let the experts sort out the countermeasures one by one.

Finding Property
Some owners reported to the editorial department of Jinghua Home Furnishing that they live on the top floor, and now there are water leaks on the wall and the roof. I do n’t know how to solve it. Experts point out that the roof structure is irrational or waterproof, which causes water leakage in the top-level owner's house.
Hu Zengguang, the engineering director of Yezhifeng Decoration Beijing, once introduced that this type of water leakage problem cannot be completely solved and remedied by interior decoration. As soon as the owner finds water seepage on the roof, he should contact the property immediately and ask him to completely repair it.
There are also some old house owners who will find that although there are no leaks, the walls will also have hair. This is because in the old-fashioned buildings of the last century, the materials in the joints of the concrete slabs on the external walls were aged and cracked, causing water seepage or mold on the walls after the rain. If the owner wants to renovate and eliminate this phenomenon, he can only apply waterproof paint on the inner wall, isolate the external water vapor, and then scrape the putty. But this is also an expedient measure. The best way is to find the property rights unit or developer of the house for remediation, and to prevent water seepage from the source.
There are many reasons for window leakage
Excluding the poor quality and deformation of the window, the leakage of the external window may also be caused by the gap between the window frame and the window caused by mortar and glass glue. The lack of elasticity of these materials, coupled with the effects of thermal expansion and contraction, generally cause the material to crack and leak after a winter.
To solve this problem, the original material can be removed, and the mortar can be replaced with a flexible one-component foamed polyurethane and sealed with a high-quality sealant on the outer layer. However, the cost is relatively high. If you want to save costs, you need to replace the sealant every year. Some experts reminded that it is best to wait for the rainy season to pass and wait for the water vapor in the window frame to drain before applying glue again. Because water vapor will not only affect the sizing effect, but also affect the service life of the glue.
There should be a drainage slope with low outside height and high inside height on the window sill of the external window. If not, the drainage slope should be redone, otherwise, rainwater will be poured back. The openings of the windows have drip eaves. When rebuilding the balcony, many owners did not even notice that they moved the windows outwards and suppressed the drip eaves. So when it rains, it will drift into the gaps between the window frame and the wall.
Key points on the back terrace
Many closed terraces have severe rain leakage, which has a lot to do with the construction before the windows are installed.
Windows should be installed, and the external walls should be waterproofed, insulated and insulated before being tiled. In order to prevent rain after installing the window, if there is no beam above the original terrace, a dummy beam should be made first. This is not only beautiful, but also waterproof. The false beam should be placed about 5mm inside the water-blocking upper part of the original balcony, and the joint with the balcony should be sealed with a sealant. The dummy beam can be made of materials such as large core boards. The inside is insulated with hollow glass wool and the like, the outside is painted with waterproof materials, and the surface exposed outdoors is decorated with aluminum-plastic panels. However, the lower part of the aluminum-plastic panel should be 8mm longer than the dummy beam. This is also to prevent rainwater from flowing directly to the window. The dummy beam and the window can also be combined with sealant.
After dealing with the upper part of the balcony, the structure of the window sill is also very important. Be sure to reserve an internal high and low external drainage slope outside the window sill to allow rainwater to drain. After dealing with these problems, choose a window of high quality and install it, and seal the joint with a sealant, then the chance of rain will be very small.
In addition, experts also reminded that whether it is a window or a sun room, care must be taken not to damage the waterproofing of the original floor during construction, otherwise the problem of water seepage in the room is prone to occur. If the terrace is not closed, there is no need to worry about the stagnant water caused by heavy rain. The original drainage system has been designed and calculated to meet the demand, but the drainage slope and drainage pipe must be redone. Hu Zengguang reminded, remember not to damage the original waterproof layer.
Close inspection of interior decoration
In order to ensure the exterior waterproof effect of the home, there are also some points that should be checked during interior decoration.
First, check the kitchen walls for holes. Once you see some of the construction holes left on the wall with cement mortar, be sure to waterproof the hole. Second, when punching the air-conditioning holes, be sure to have a downward slope toward the outside. The difference between the inside and the outside is 2-3. Centimeters to prevent rainwater from being poured into the room, and the unused old air-conditioning openings should be closed.
At the pipe mouth of the kitchen and bathroom, check whether there are any leaks. During the inspection, you should also check whether there is water leakage in the pipe.
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