The recent heavy rains have caused many owners to experience the pain of seeping water at home. What is the reason? How to solve it? See the experts to sort out the countermeasures.
Jinghua Times reporter Ma Xijinghua Times Report Wu Shangnan
Looking for a property on the external wall
Some owners have reported to the editorial department of Jinghua Home, they live on the top floor, and now there are water leaks on the walls and roofs. I don't know how to solve them. Experts pointed out that the roof structure is unreasonable or waterproof, which causes water leakage in the top floor owners' houses.
Hu Zengguang, the engineering director of the company's peak decoration in Beijing, once said that such leakage problems cannot be completely solved and remedied by interior decoration. Once the owner discovers that there is water seepage on the roof, he should immediately contact the property and ask him to completely rectify it.
There are also some old homeowners who will find that although there is no leaking place, the wall will also have long hair. This is due to the aging and rupture of the materials in the splicing joints of the external wall concrete slabs in the old buildings of the last century, resulting in water seepage or moldy inside the house 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 put the putty. But this is also an expedient measure. The best way is to find the property rights unit or developer of the house to rectify and prevent water seepage from the source.
There are many reasons for leaking windows
Poor sealing material
After eliminating the cause of poor window quality and deformation, the leakage of the outer window may also be caused by the gap between the window frame and the window. These materials lack elasticity, coupled with the effect of thermal expansion and contraction, and generally the material will crack and leak after a winter.
To solve this problem, the original material can be removed, and the mortar is replaced by a stretchable one-component foamed polyurethane and sealed with a high-quality sealant on the outer layer. However, the cost is relatively high, and if it is to save costs, the sealant should be replaced every year. Some experts also reminded that it is best to wait for the rainy season to pass, and then re-apply after the water vapor in the window frame is drained. Because water vapor will not only affect the sizing effect, but also affect the life of the glue.
Ignore the drainage slope, drip æª
On the window sill of the outer window, there should be a drainage slope with low outer and inner height. If not, the drainage slope should be redone. Otherwise, the rain will be reversed. There were dripping water in the opening of the window. When the balcony was remodeled, many owners did not notice it. They moved the window outward and pressed the drip. So when it rains, the rain will fall into the seams of the window frame and the wall.
There are points on the back seal terrace
Many of the rear-closed terraces have serious rain leaks, which have a lot to do with the construction before installing the windows.
To install the window, the outer wall is waterproof, insulated and insulated before tiling. In order to prevent rain leakage after installing the window, if there is no beam above the original terrace, you should first make a false beam. This is not only beautiful, but also waterproof. The false beam should be placed about 5mm inside the water retaining block on the upper part of the original balcony, and sealed with a sealant at the joint with the balcony. The artificial beam can be made of a large core board or the like, and the inside is insulated by insulating glass wool, and the exterior is coated with a waterproof material, and the surface exposed on the outdoor is decorated with an aluminum composite panel. However, the lower part of the aluminum-plastic panel is longer than the artificial beam of 8mm, which is also to block the rainwater, and does not directly flow to the window. The false beam and the window can also be sealed with a sealant.
After handling the upper part of the terrace, the structure of the window sill part is also very important. It is necessary to reserve a water-discharging slope inside and outside the window sill for the rainwater to drain. After handling these problems, choose a quality window to install, and seal the joint with sealant, then the chance of rain leakage will be very small.
In addition, experts also reminded that whether it is a window or a sun room, we must pay attention to the waterproofing of the original floor during construction, otherwise the room is prone to water seepage. If the terrace is not closed, there is no need to worry about the accumulation of water caused by heavy rain. The original drainage system has been designed and calculated to meet the demand, but the drainage slope and drain pipe must be redone. Hu Zengguang reminded that it is important not to damage the original waterproof layer.
Internal inspection
In order to ensure the external waterproof effect of the home, there are some points to be checked during the interior decoration.
First, check if there is a hole in the kitchen wall. Once you see some of the remaining construction holes in the wall that are covered with cement mortar, you must make the hole waterproof. Secondly, when you hit the air-conditioning hole, you must have a slope that slopes downwards. The difference between inside and outside is 2-3. Cm, to avoid rainwater pouring into the room, the old air-conditioning hole to be closed.
Pipes, air ducts, etc. of the kitchen and outlet of the pipe mouth should be checked for signs of water leakage. Also check the pipeline for leaks when inspecting the house.
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