PPGI Roofing Sheet PPGI is a type of roofing material that is made from galvanized steel coated with a layer of paint or other protective coating, where PPGI stands for Pre-painted Galvanized Iron. The coating on PPGI roofing sheets provides additional protection against weathering and corrosion, making them more durable and longer-lasting than standard galvanized roofing sheets. They also come in a variety of colors and finishes, which can be customized to match the design of a building or project. PPGI Roofing Sheet is commonly used in the construction of residential, commercial, and industrial buildings due to their high durability and aesthetic appeal. They are also lightweight, easy to install, and require minimal maintenance, making them a popular choice for a wide range of roofing applications.