It is understood that when modern decor, water is an important part, but many consumers on how to choose a qualified silicone rubber and no clear concept, combined there are many brands on the market quite a mixed bag of paint, difficult for consumers to choose, which is easier for accident lay hidden. Waterproofing is a relatively hidden works, some families are often mistakenly believe that bathroom, kitchen and other interior water works area is not very large, but also in the top with cement and tile, it will not cause pollution after use. In fact, experts, interior waterproof layer must reach a relative thickness in order to have waterproof function, therefore, a relatively large amount of material used, once the use of low-grade silicone rubber will be a long time to pollute the indoor environment. In addition, some of the molecular content of the tar-containing urethane-based silicone rubber petroleum coke is very large and volatile, easily indoors deposition, excessive inhalation of this gas, a short time can cause death. Therefore, the selection must not be taken lightly. Silicone rubber should be chosen to have some basic knowledge of the current building materials market is not standardized, there is a lot inferior products, qualified consumers in the purchase should choose a relatively well-known brands. The real green waterproof material should be nationally accredited testing center issued test reports, product test reports and product certification. Experts advise consumers to buy should pay attention to the manufacturer's service measures. General formal manufacturers in the sale of products will have a relatively standardized pre-sale and after-sales service, some well-known brands will promise free maintenance and long waterproof warranty. Currently on the market can be divided into three types of silicone rubber: one is a silicone rubber modified asphalt, this coating glass cloth with more use of relatively complex projects. Works price of around 100 yuan per square meter; the other is a polyurethane-based silicone rubber, these coatings generally used organic solvent containing toluene, xylene and other ingredients to dilute toxic. Casualties above is used in such coatings; there is a newly available silicone rubber, the coating is mainly made using polymer synthesis technology, has a good waterproof, moisture-proof function, and relatively simple construction, the price per square meter at around 40 yuan.