the overall air pollution potential of green roofs. The pollution released to the air due to the polymer’s production process can be balanced by green roofs in long term; however it is important to point that the manufacturing process of low density polyethylene and polypropylene has high negative impacts to the environment. The analysis concluded that it is still beneficial to install green roofs with polymers; however, it is essential to explore materials that can replace the current use of polymers to enhance overall sustainability of green roofs. The use/re-use of waste materials is a mandatory step in green construction.