First, remedial measures for housing leakage.
1. Maintenance method of cracks at the overlapping joint of leaking coiled materials in houses 1: Apply a layer of polyurethane waterproof coating with a width of about 5CM on the left and right sides of the cracks, cover a layer of waterproof glass fiber cloth (waterproof cloth) with a width of about 8CM on the coating layer, and then coat a layer of polyurethane waterproof coating on the glass fiber cloth until the glass fiber cloth is completely penetrated by polyurethane. (referred to as "two coats and one cloth")
2. Maintenance method 2 of the cracks at the overlapping part of the leaking coil in the house: melt the cracked coil with a hot-melt torch at high temperature, and apply polyurethane waterproof coating on it to strengthen the sealing treatment. Materials required by the seller: original ID card and copy of ID card. If you are married, you need the original and photocopy of the marriage certificate and the original real estate license; If one of the husband and wife can't be present, they should first write a power of attorney and then go to the judicial bureau for notarization, and a copy of the household registration book.
3. Maintenance method of local blistering of leaking coil: If the diameter of a single bubble reaches more than 250px, it should be treated accordingly. Cut the drum with a tool knife to release internal gas or water. When the base surface in the coil is dry, in the maintenance of lap cracking of the coil, the coil is repaired into a whole by applying two coats and one cloth.
4. Maintenance method of water seepage from leaking roof to inner wall: Water seepage from top to bottom on the wall may be caused by external wall or roof waterproof layer. Check whether the joint between the drain pipe and the roof concrete is cracked and whether the waterproof layer is ready. Maintenance method: at the joint between the drainage pipe and the roof concrete, repeatedly brush with polyurethane waterproof coating until the cement color is invisible.
5. Reverse leakage repair method of building leakage: On the premise of roof cast-in-place, waterproof leakage repair method of high-pressure mechanical grouting can be used for maintenance. Commonly known as spraying, chemical grouting liquid is injected into concrete by using water stop needle, and the leaking part of the roof is partially blocked by using the principle of high expansion of grouting liquid when it meets water, so as to achieve the purpose of plugging.
6. Overall waterproof maintenance method for house water leakage: If the house has not been constructed with the overall waterproof layer for more than five years, and the indoor water leakage is scattered, considering that the waterproof layer is aging and cannot play its due waterproof role, it is recommended to make the waterproof layer as a whole. Generally, single-layer and double-layer coiled material waterproofing is adopted, or the construction scheme of coating and coiled material waterproofing is adopted.
7. In addition to high-pressure grouting and integral roof waterproofing, the above methods are mostly simple and easy-to-master daily maintenance methods. If no obvious effect is found after implementation, you should immediately find a professional waterproof company to deal with it.
8. Waterproofing should be carried out on sunny days. When it rains, the leaking house cannot be repaired, and it is easy to be dangerous without effect.
9. The above experience is compiled by Jiacheng Waterproof Bian Xiao Jony J based on years of work experience, which is easy to understand and master. However, if the house leaks seriously, it is recommended not to repair it by itself, and it is best to ask a professional waterproof company to carry out systematic treatment.
Second, the cause of the house leakage
1 The leakage of gables and parapets should be checked at the corresponding indoor leakage position of the roof, and it is easy to find the cracks at the joints of gables, parapets and reinforced concrete roof panels. Cracks are parallel to the roof, and there are two main reasons for their water seepage: one is the material. Because the thermal linear expansion coefficients of these two materials are different (the thermal linear expansion coefficient of brick masonry is nearly twice that of concrete), at the same temperature, the deformation values of brick masonry and concrete are different, resulting in cracks at their connection parts. However, when dealing with leakage, it is often found that the construction is not carried out as required. For example. The waterproof layer at the junction of gables and parapets is not made into an arc, some waterproof layers at the junction are not in place, and some are not tightly embedded, resulting in frequent cracks and water seepage.
2 Roof gutter, gutter and gutter leakage In the on-site inspection, it is often found that the longitudinal slope of the roof gutter and gutter is too small, and some even have the phenomenon of falling slope. Some gutters are higher than the surface of the gutter, which makes the drainage of the roof gutter and gutter poor or stagnant, resulting in water seepage. In addition, the short pipe of the downpipe is not close to the base during construction, the downpipe is not sealed with sealing material, and an additional layer is added when the waterproof layer is made, which will cause water seepage.
3 Deformation joint leakage is the most common deformation joint of iron roof, because some galvanized iron roof failed to lap in the direction of running water or the interface was not welded firmly, and there were also a few deformation joint waterproofing materials that were not broken and cracked, some deformation joints did not cover dry coil or did not meet the specified requirements, and some did not add additional layers.
4 Leakage through the roof pipe The water seepage through the roof pipe often appears in the exhaust pipe of the bathroom, the exhaust pipe of the insulation layer and the exhaust pipe of the kitchen and bathroom. There are still some structural layers, such as waterproof layer, which are not handled well, resulting in cracks at the joint between the structural layer and the pipe wall, forming rainwater leakage channels.
5 roof panel leakage The reason for roof panel leakage is difficult to find, and the real reason can only be found when it is dug out during maintenance. The roof leakage is caused by structural cracks, unstable structure and failure of waterproof materials. But from the actual situation, most of the reasons are due to the failure to handle the relationship between the waterproof layer and the insulation layer of the roof.
6. The water seepage in the toilet is mainly caused by construction and materials, or the quality problem at the joint between the drain and drain of sanitary ware. Such as urinals, floor drains, water supply switches, faucets, etc. Waterproof casing is not embedded in the drainage riser, the pipe is damaged by drilling holes in the' blank' bathroom during decoration, and the quality of the plastic or aluminum-plastic composite pipe used is poor.
7. Tile the exterior wall. In particular, sticking bricks on the hollow brick exterior wall ignores the bottom plastering, or water seepage occurs at the interface between aluminum alloy window and exterior wall.
At the end of the day, I wonder if you have learned it? If your house leaks, you must first find the reason according to Xiaobian, and then think of a remedy. Some friends like to make it up by themselves, so you can look at it; If you don't want to do it yourself or the house leaks too much, you must look for a professional building maintenance master, but don't "go it alone".