Waterproof construction is the most important part of building and home decoration. It is understood that up to 46.5% of netizens think that the most headache in the process of building and family decoration is the problem of house leakage. Building waterproof is related to building safety, long-term leakage will damage the building base and reduce the building life. Building waterproofing is related to the people's livelihood, and the persistent leakage is difficult to solve, causing problems among the neighbors. Building waterproofing is related to building energy conservation. Many doors and windows and exterior walls leak, eroding the insulation materials, changing its thermal conductivity and reducing energy conservation. Building waterproofing is related to environmental protection. Tailings and non-ferrous metals are not well protected and impervious in the mining process, and enter the underground with water, Cause groundwater pollution. The poor quality of building waterproof often causes the tragedy of "house water". How to improve the quality of building waterproof and solve the problem of leakage? How to make the performance of waterproof products play a good role? This is a problem worthy of consideration and balance between developers and waterproof industry to find a solution.
"House water" is the key to improve construction quality
At present, 65% of the new houses in China will have different degrees of leakage within one to two years, accounting for 65% of the real estate quality complaints, ranking first. 65% of building waterproofing projects need to be renovated 6-8 years later. According to the survey, building leakage has become the second major building problem outside the structure, which has long troubled developers and owners.
Relevant reports show that 80% of the buildings in our country have leakage. Why do so many new buildings have leakage? According to the investigation of the causes of the leakage of buildings at home and abroad, the authority found that the main cause of the leakage is the improper construction operation. According to the survey results of Western waterproof company in France, 85% of the leakage is caused by construction accidents, 70% of the leakage is caused by construction reasons in the UK, and 48% in China. That is to say, improper construction is the main cause of water leakage in construction projects. Even if the qualified waterproof materials and reasonable waterproof design are adopted, due to the careless construction links and poor construction quality, the accidents of waterproof quality will still be caused. Therefore, to ensure the construction quality is the key to improve the quality of waterproof engineering.
There is a common saying in the waterproof industry, "three materials, seven construction", materials only account for 30%, construction accounts for 70%. Seven construction is controlled by people, and people are often the most unstable factor. Even if the materials are better, the construction is not good or there is a problem in a certain link, the whole system will fail. And now the real estate development cycle continues to shorten, many construction enterprises in the rush to work period did not follow the norms to construct, so that the waterproof operation loopholes or the subsequent process damage the waterproof layer.
"Waterproof" design and materials need to be combined
Say perfect, then say "material". Nowadays, price control is mainly based on local conditions, and waterproof is no exception. Real estate development is very regional, but in recent years, when many well-known real estate enterprises in the South march into the north, transplanting the waterproof experience of the south to the north, they will inevitably be acclimatized. Due to the rain in the south, water-resistant materials are mostly selected as waterproof materials, such as modified asphalt roll of glass fiber tire, polyester tire or water-resistant adhesive bonded polymer roll. However, in the cold area of North China, especially in the snowy area, some waterproof materials can't withstand the cyclic change of low temperature frost heave and contraction, and they are aging and fracture prematurely. Therefore, SBS modified asphalt roll or polymer roll with welded joint should be selected in these areas. Secondly, different parts of the building have different requirements for waterproof materials. They should also be constructed according to local conditions and materials.
As the roof waterproof layer is exposed, exposed to the sun, rain and wind, it is necessary to select waterproof materials with high tensile strength, high elongation and good aging resistance. The leakage of the wall is because the wall is too thin now. Most of the wall is made of light blocks. There are a large number of internal and external through joints, and then the joint between the door and window frame and the wall. The sealing is not strict, and the rainwater penetrates through the joints. Therefore, the wall waterproof cannot use the roll material, can only use the coating, moreover with the exterior decoration material union. The installation joint of the window frame shall also be provided with sealing paste.
Because the underground waterproof layer is immersed in water or very humid soil for a long time, the waterproof material must have good water resistance. The waterproof layer of the base plate shall be made of thick waterproof materials with certain resistance to pricking.
The waterproof of toilet and bath room can't choose coil material, the coating is the most suitable, and the cement-based acrylate coating is the most suitable one, which can stick the ceramic tile firmly on it.
In addition, the selection of waterproof materials also considers the needs of building functions. For example, some roofs are planted with flowers and plants and green environment. Due to the strong puncture force of plant roots, the waterproof layer should have the ability of puncture resistance in addition to corrosion resistance and immersion resistance. In this case, polyethylene geomembrane (welding joint), PVC roll (welding joint), lead tin alloy roll and modified asphalt roll with rooting resistance shall be selected.
Leakage water is seriously affecting the quality of consumers' living, which should be paid attention to by the whole industry and relevant departments. Strengthening the self-discipline of the industry and launching relevant industrial policies are very important in promoting the waterproof of buildings and home decoration.