The polyurea is a synthetic polymer obtained from the reaction of a diamine with a diisocyanate, polymerization reaction is very similar to polyurethane one, but in case of polyurea, resulting link is a “urea”, so it is called polyurea.By this link we get from generating molecular structure an insensitivity to moisture, thus making the polyurea (if pure) the best waterproof membrane. It is known for its rapid curing time and high strength, making it useful in a variety of industrial and commercial applications, such as construction waterproofing, coatings for truck beds, industrial flooring, and tank linings. Additionally, it can be used as a sealant and insulation material.