Did the 'flood' come and was the waterproof coating really waterproof?
Since the beginning of the summer, heavy rains have plunged across the country, and heavy rain has occurred in the south. In particular, the flood peak of the Yangtze River in recent days has aroused widespread concern in society. On July 20th, the peak of the raging flood reached 70,000 cubic meters per second on the dam's sluice and snarled further down the Yangtze River. Heavy rains lasting for several weeks have caused the water level of the Yangtze River and its tributaries to exceed 1998 levels. At the same time, the primary task of defense against torrential rains in other provinces is waterproofing. Most of China's newly built or old houses have not made waterproof insulation on the exterior walls, or the quality of waterproof materials has not been passed, resulting in cracking of large-scale walls and water seepage. The root cause of housing leakage is fake and shoddy waterproof material. In view of the large number of residential and housing leaks caused by this large-scale rainfall, some people in the industry believe that the flood disaster has also taken China's waterproof coating.
Development Status of Waterproof Coatings in China
According to the author's observation on the coating network, after more than ten years of unremitting development, the domestic building waterproof coatings have achieved remarkable results in terms of output, raw materials and product variety functions. In addition, product standards and construction specifications are gradually being improved, and a waterproof material system with relatively complete categories and basic supporting grades has been formed. There have been a number of companies that can produce various kinds of waterproof coatings according to the standards of Europe, the United States, Japan, etc. It should be said that we have narrowed the gap with the international advanced level. With the development of waterproof coatings, in recent years, China has formulated national and industry standards for the main varieties of asphalt waterproof coatings, polymer modified asphalt waterproof coatings and synthetic polymer waterproof coatings, and stipulated their tests. Methods and technical indicators; In April 1994, the national standard “Technical Specifications for Roofing Engineering†was published, which clearly defined the requirements for the quality of waterproof coatings in China, the main points for coating film waterproof engineering design, construction methods, project acceptance and maintenance.
Floods flood the country's waterproof coating traces worrying
However, all the news about waterproof coatings only clearly understood its flaws. Waterproof coatings are not waterproof. What are the reasons?
The development of waterproof coatings lags behind, technology is the key
Domestic waterproof coating companies have little interest in newly developed technologies and products because R&D institutions and manufacturing companies are always not interested when new technologies are required to be put on the market. This not only affects the common use of new technologies. The promotion has also caused domestic paint companies to lose opportunities for development once and for all. This greatly restricts the breakthrough in performance and quality of waterproof coatings and results in waterproof coatings that are not waterproof.