Recent research was conducted to study the flexural and shear behavior of R.C beams strengthened externally by sprayed polyurea system. In addition, the effectiveness of changing the thickness of polyuria was studied. The technique of polyurea system to strengthen R.C beams was investigated in order to evaluatethe increase in the flexure and shear capacity of beams. Small and large scale of beams was examined. Different strengthening schemes for beams were used with variable thickness of polyurea. Sixteen specimens were prepared and divided into six flexure beams and ten shear beams. The experimental results included ultimate load, vertical deflection along the beams, overall ductility, and containing fragmentation. The polyurea system showed measurable increase in flexure and shear capacity of beams. Moreover, the ductility of beams was increased. The ability of containing fragmentation was clearly achieved by polyurea coating.