Polyurethane Coating System for Asbestos Sheet fills micro pores and prevents objectionable gas emissions. The Polyurethane Coating System is used to prevent leaching of asbestos fibres from asbestos roofing sheets. The Polyurethane Coating System exhibits good UV resistance and reflects heat and light there by improving comfort level for living in asbestos roofing. The Polyurethane Coating System for Asbestos Sheet makes the sheet totally safe in terms of environment.