At present, in decoration, to the waterproof processing of water environment in the kitchen and bathroom etc. often used places, indoor environment monitoring center found in the examination, waterproofing paint pollution is serious is that some of the tar containing polyurethane products, this kind of material is made from raw materials like coal tar or containing part of the coal tar tar, volatile oil and gas out of the pungent smell of tar; because the molecular gas amount is relatively large, easily deposited on the air circulation of the indoor environment in a short period of time, excessive inhalation of tar and gas poisoning can lead to rapid death; another drawback to this kind of waterproof coating is used as organic solvent the diluent, the organic solvent is toluene, xylene and other toxic substances? Small dose long time inhalation of tar gas and benzene can cause respiratory tract disease, dizziness, nausea, caused Such cancer. At present, this product has been the country's relevant departments have been designated as the elimination of building decoration materials. However, due to the renovation of the market management is not standardized, some poor quality products still have their own living space. Especially the "decoration guerrillas" can only focus on short-term interests, the construction are not basic health knowledge, and consumers also do not have enough understanding on the waterproof knowledge, often unknowingly to introduce home pollution.