Vegetated roofs can provide which of the following benefits?

• A. Insulation
• B. Stormwater management
• C. Habitat creation
• D. All of the above

Answer: (D)

Vegetated roofs provide multiple benefits because the living layer and growing medium work together to address energy, water, and ecology. The plants and soil act as insulation, slowing heat transfer and helping reduce heating and cooling needs for the building. They also store and slowly release rainfall: the substrate holds water and plants transpire, which lowers peak runoff and aids stormwater management. Additionally, the plants create microhabitats that support wildlife like insects and birds, contributing to biodiversity in urban areas. Because of these combined effects, vegetated roofs offer insulation, stormwater management, and habitat creation—so all of the above.