Green roofs are literally green from being covered with soil and plant life, typically grass. Buildings and homes can have full or partial green roofs. The roof is covered with waterproofing membrane and then soil to plant certain types of vegetation — those with roots that will not damage building structure. Such roofs are also called “living roofs” because they can absorb rainwater, provide insulation, be a habitat for animals, a garden for people and can help lower urban temperatures.