Extensive green roofs are lightweight, low-maintenance roofing systems that support a variety of plants, primarily succulents and grasses. They are designed to retain moisture and provide insulation, helping to reduce energy costs in buildings. These roofs typically have a shallow soil layer, making them suitable for areas with limited structural support. These green roofs contribute to urban biodiversity by creating habitats for insects and birds. They also help manage stormwater by absorbing rain, reducing runoff, and improving air quality. Extensive green roofs are often used in urban settings, where space is limited and environmental benefits are needed.