Architecture Practice Exam 2025 - Free Architecture Practice Questions and Study Guide

The primary function of a green roof is to insulate the building and manage rainwater effectively. Green roofs consist of vegetation that is planted over a waterproof membrane, which can help in various ways. First, they provide thermal insulation, reducing the need for heating in winter and cooling in summer, thus improving energy efficiency. Second, green roofs help manage stormwater by absorbing and retaining rainwater, which can mitigate flooding and reduce the burden on stormwater systems. This dual function enhances the sustainability of the building and contributes to the overall environmental health of the area.

While creating outdoor recreational spaces, providing aesthetic appeal, and supporting traditional roofing functions are important aspects of green roofs, they are secondary compared to the significant benefits of insulation and rainwater management. These primary functions are what make green roofs increasingly popular in urban environments where managing resources and climate impact is crucial.