Type of waterproof coating
At present, there are two major types of waterproof materials on the market: one is polyurethane waterproof coating. Such materials are generally made from polyurethane and coal tar as raw materials. The charcoal volatilized by it is highly toxic and not easy to remove, so it was banned in China in 2000. The polyurethane waterproof coating that is still on sale uses asphalt instead of coal tar as a raw material. However, when such a coating is used, it is generally diluted with an organic solvent such as toluene or xylene, and thus contains toxicity; the other is a polymer cement-based waterproof coating. It consists of an emulsion of a variety of water-based polymers and a high-quality cement mixed with various additives. The flexibility of the polymer (resin) is integrated with the rigidity of the cement, making it excellent in impermeability and stability. Its advantages are convenient construction, low comprehensive cost, short construction period, and non-toxic and environmental protection. Therefore, polymer cement base has become the protagonist of the waterproof coating market.
Waterproof coating construction
Treat the base layer before painting. The coating of waterproof coatings has a lot to do with the condition of the ground base. The more uneven the base layer, the more paint is used. Therefore, before applying the waterproof coating, it is best to simply treat the base layer and smooth the base layer as much as possible. Secondly, it should be ensured that the ground is dust-free, soil-free, and oil-free. The mop can be carefully mopped to remove all the dust. Otherwise, the waterproof coating will be cracked and the waterproof effect will be affected. The products to be purchased should be important in nature. The names of waterproof coatings currently on the market are various, such as; slurry; mortar; etc., and other waterproof coatings are divided into type I and type II. Some people say that type II is more suitable. It is used indoors, but according to relevant professionals, it is not important to know which kind of waterproof coating to use when purchasing. The classification of type I and type II is only the definition of each merchant. There is no authority in the industry. The division and specific standards. When consumers buy, the most important thing is to look at the nature of waterproof coatings, generally marked as; general; or flexible; then look at the ratio of mortar to emulsion, such as 12kg + 8.4L; price is also product quality An important reflection is that two barrels of the same capacity of paint, if the price difference is too large, consumers have to question the performance of the product. There are also products marked; kitchen and bathroom; in fact, this is just a gimmick, the general indoor waterproof coating can be used for kitchen and bathroom.
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