What is vegetated roofs (green roofs) used for?

• A. Aesthetic value only
• B. Insulation, stormwater management, and habitat creation
• C. Noise reduction only
• D. Structural support only

Answer: (B)

Vegetated roofs add a layer of soil and plants on top of a roof, delivering multiple practical benefits. They improve insulation, helping keep buildings cooler in summer and warmer in winter, which saves energy. They also manage stormwater by absorbing rain and releasing it gradually, reducing runoff and the load on drainage systems. In urban areas, the vegetation provides habitat for birds and insects, supporting biodiversity. These combined advantages—energy efficiency, water management, and habitat creation—make green roofs valuable beyond just aesthetics, beyond just noise reduction, or beyond simply adding structural support. They do add weight and require structural assessment, but their main value comes from the integrated benefits they provide.