Building waterproofing has evolved from simple waterproofing of buildings, such as roofs, exterior walls, basements, etc., to areas such as highways, high-speed railways, bridges, subways, airports, docks, tunnels, culverts, and landfill disposal. Building waterproof materials are an important component of building materials. According to data from the National Bureau of Statistics, the total output value of the industry in 2012 was approximately 150 billion yuan. The market share of building waterproof materials in the field of engineering construction may account for 40% -50% of the total sales revenue. Waterproof materials play a protective role in concrete, and with the increasing use of concrete in engineering construction and infrastructure, the scope of use of waterproof materials has also expanded.
Building waterproofing is related to building safety, building energy efficiency, and environmental protection. Building leakage is a long-standing common problem in the country's construction industry. The safety of a building comes from its main body - reinforced concrete. Reinforced concrete itself does not have waterproof function. Under long-term rainwater, reinforced concrete will rust and crack, causing problems with its main function. Therefore, building waterproofing is crucial for the safety of the main body of the building. Building waterproofing materials are also related to building energy efficiency. Building energy efficiency is a national policy in our country, and any insulation material will have a significant discount in performance when exposed to water and moisture. Building waterproof materials are also related to environmental protection, including landfill, environmental treatment, tailings treatment and other industries that require waterproof treatment.
The awareness of the importance of building waterproofing is constantly increasing. There are only two products in building materials that require national administrative licenses: 1. Cement (related to the safety of the main building structure), and 2. Waterproof building materials (protecting the reinforced concrete main structure from damage). Building waterproofing, as a concealed project, is not exposed and its importance has not been recognized in the past. The four trillion yuan investment has led to the widespread use of waterproof materials in projects such as highways, high-speed railways, airport terminals, and landfills. People's awareness of the importance of waterproofing is constantly increasing.
The product structure is mainly composed of waterproof rolls and supplemented by waterproof coatings. Roll materials account for 70% of the industry's products, while coatings account for 30% of the market share. The main materials are mainly roll materials, which also include SVS, self-adhesive roll materials, and polymer roll materials. These new products are the future development trend.
After 2009, the industry experienced rapid growth and faced overcapacity pressure. The industry developed rapidly from 2009 to 2012, with a significant increase in annual growth rate. About 800 enterprises obtained waterproof building materials licenses before 2009. By 2013, the number of entrepreneurs obtaining waterproof building material licenses had almost doubled. The four trillion yuan stimulus policy has brought new investment to the waterproofing industry, but it has also led to overcapacity in the industry. Foreign waterproofing companies have accelerated their investment in China in recent years. The United States is the country with the largest scale of waterproofing companies in the world, and the top five waterproofing companies have corresponding sales and investments in China. Some have started investing and building factories in China, while others have acquired Chinese waterproofing companies. Foreign waterproofing companies are also increasing their investment in raw materials and other upstream product raw materials.