Xiao Bian today learn under the roofing and construction requirements of several levels: roof project should be based on the nature of the building. Engineering characteristics, the importance of using the functional requirements, regional natural conditions and life of waterproof layer, will be divided into three levels of roofing, roofing grade requirements in accordance with the design requirements, construction roofing projects. Roofing level, primarily the ability to roofing, in order to distinguish various grades, generally based on the construction process and selection of waterproof material. Specific levels of waterproof material no clear requirement to waterproof capability and long service life can be. Specific requirements concerning roofing 1,2,3 see below: 1, a waterproof roof: Applications: especially important or have special requirements for waterproof construction; waterproof layer rational life: 25 years; waterproof layer selection of materials: should use synthetic polymer waterproofing membrane, polymer modified bitumen membrane, sheet metal, synthetic polymer waterproof coating, fine concrete and other materials; fortification requirements: three or three more waterproof fortification. 2, two waterproof roofing: Application: important buildings and high-rise buildings; waterproof layer rational life: 15 years; waterproof layer selection of materials: better to use polymer modified bitumen membrane, synthetic polymer waterproofing membrane, sheet metal, synthetic polymer waterproof coating, polymer modified bitumen coating, fine aggregate concrete, flat tiles, shingles and other materials; fortification: two waterproof fortification. 3, waterproof roofing 3: Applications: general construction; waterproof layer reasonable service life: 10 years; waterproof layer selection of materials: better to use three felt four oil bitumen membrane, polymer modified bitumen membrane, synthetic waterproofing, sheet metal, polymer modified asphalt waterproof coatings, synthetic polymer waterproof coating, fine aggregate concrete, flat tiles, shingles and other materials; fortification: a waterproof fortification. Today, I will introduce these, more roofing of information, please call the company hotline or visit the company's Web site: