GI (galvanized iron) roofing sheets are sheets of steel that have been coated with a layer of zinc to protect the steel from corrosion and weathering. They are commonly used in the construction of roofs for buildings and homes, as well as in industrial and agricultural applications. GI roofing sheets are strong and durable, and are able to withstand harsh weather conditions, such as high winds and heavy rainfall. They are also resistant to fire and pests, making them a popular choice for roofing material. GI roofing sheets are available in a range of colors and styles, and can be cut and shaped to fit a variety of roofing designs. GI roofing sheets are easy to install and maintain, and are known for their long lifespan. They are also relatively affordable, making them a popular choice for both residential and commercial roofing projects.