The pollution performance of insulators has a significant impact on the reliability of the power system. Observation and research have revealed that all polymeric dielectrics are susceptible to deterioration under operating stresses, resulting in system failure. Polymeric materials have the property of hydrophobicity by which it gives better pollution performance. Transfer of Hydrophobicity may reduce under certain conditions resulting in failure of polymeric insulator. In this research work, an experimental investigation has been carried out on polymeric material to check if there is any influence of the pollution layer thickness on the hydrophobicity transfer property of polymeric material. Experiments with increasing pollution layer thickness and at various severity have been conducted to investigate the impact of pollution layer thickness and severity on the transfer of hydrophobicity of polymeric insulators. From the experimental findings, it can be inferred that the transfer of hydrophobicity may not happen for the pollutant thicknesses greater than 1mm and for higher severity. At the same time, hydrophobicity transfer occurs onto the polluted surface for lower severity and lower thicknesses of the pollution layer.