big size self adhesive bitumen waterproof roll Building waterproofing materials
Building waterproofing has been from the simple housing construction waterproof, that is, roof, facade, basement and other simple housing construction waterproof field to the highway, high-speed railway, bridge, subway, airport, terminal, tunnel, culvert, landfill Field development. Building waterproofing materials are an important part of building materials. According to the National Bureau of Statistics data show that in 2012 the industry's total output value of about 150 billion. Building waterproofing materials in the field of construction market share may account for 40% -50% of total sales revenue. Waterproof materials bear the protective effect of concrete, with the concrete more for engineering construction and infrastructure, waterproof material use range also will expand.
Building waterproofing related to building safety, building energy efficiency, environmental protection. Building leakage is a common problem for the country's long-term construction. The safety of the building comes from the main body of the building - reinforced concrete. Reinforced concrete itself is not waterproof, in the long rain, the reinforced concrete will rust, cracking, the main function of the problem. Therefore, building waterproofing is essential to the safety of housing. Building waterproof materials are also related to building energy efficiency, building energy efficiency is our national policy, any insulation materials in the case of water and moisture performance will have a very large discount. Building waterproofing materials are also related to environmental protection, including landfill, environmental treatment, including tailings treatment and other industries need water treatment.
The importance of building waterproofing awareness of the degree of continuous improvement. The country in the building materials which only two products require national administrative license: 1, cement (related to the main building structure safety), 2, waterproof building materials (to protect the main structure of reinforced concrete is not infringed). Building waterproof as a hidden project, not exposed, the importance of the past is not recognized. Four trillion of investment makes the highway, high-speed railway, airport terminals, landfills and other projects began to use a large number of waterproof materials. People's awareness of the importance of water quality continues to improve.
The product structure is mainly waterproof membrane, supplemented by waterproof coating. Coils account for 70% of the industry's share of products, paint accounted for 30% of the share. The main material inside the main membrane, which also includes SVS and self-adhesive coil and polymer membrane, these new products is the future development trend.
After the rapid growth of industry in 2009, production capacity is facing excessive pressure. Industry from 2009 to 2012, the rapid development of a substantial increase every year. 2009 before the access to waterproof building materials permit about 800 enterprises. By 2013, the number of entrepreneurs who received a waterproof building permit was almost doubled. Four trillion stimulus policy to bring new investment in the waterproof industry, but also brought the industry overcapacity. Foreign waterproofing enterprises in recent years to accelerate investment in China. The United States is the world's largest waterproofing enterprises in a country, the top five waterproofing enterprises in China have a corresponding sales and investment, and some in China began to invest and build factories, and some acquisition of the Chinese waterproofing enterprises. Foreign waterproofing enterprises are also increasing the raw materials and some other upstream products on the investment in raw materials.