Green roofing refers to a sustainable building practice that involves growing vegetation on rooftops. This method can help reduce energy costs by providing natural insulation, absorbing heat, and lowering the urban heat island effect. Green roofs can also manage stormwater by absorbing rain, which reduces runoff and helps prevent flooding. There are two main types of green roofs: extensive and intensive. Extensive green roofs are lightweight and require minimal maintenance, featuring low-growing plants. In contrast, intensive green roofs are heavier and can support a wider variety of plants, including shrubs and small trees, but require more maintenance and irrigation.