Polyurea for Building Roof

The waterproof material of building roofing in China has developed from a single kind of asphalt to modified asphalt rolling material, polymer rolling material and waterproof coating. Waterproof rolling material has a lot of joints, easy to produce leakage. Waterproofing coatings are mainly polyurethane and waterborne acrylic. Waterborne acrylic coating has good weather resistance and is easy to clean. Its disadvantage is that it cannot be applied under low temperature or high humidity conditions and cannot seal water vapor due to its high air permeability. Polyurethane elastic waterproof coating has bright colors and good waterproof performance, but it is prone to blister and flow due to the influence of humidity during construction, and its aging resistance is poor.

The above waterproof material is more prone to cracking after the aging of the sun. Although waterproof material itself does not craze, also can cause fracture by the element such as shake, stress, weathering. The SPUA material is different, so it has high strength, good flexibility, good aging resistance, and can hold the concrete tightly even in the case of concrete cracking. In particular, it is not suitable for the roofing waterproof treatment of high-grade buildings. In order to completely eradicate the hidden danger of roof leakage and get out of the vicious circle of "annual repair and annual leakage" in the current construction industry, SPUA technology is bound to be adopted eventually, which has been well verified in foreign countries.

With low density, high compression strength, low thermal conductivity and low water absorption, SPUA is especially suitable for the water-proof layer of planting roof. It can fully bear the system load and has the effect of water storage, heat preservation, heat insulation, sound insulation and energy saving.

The application of SPUA technology in the roof waterproofing of high-end buildings is an irresistible trend. Its excellent cost performance will surely end the history of "black roof" in China in the near future and make our city more colorful

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