Vegetated roofs control and filter stormwater, provide insulation in the winter, and transpire in the summer providing a cooling benefit. Spiritually and ethically vegetated roofs also have much appeal. Anyone who has seen the devastation that occurs on a construction site can understand the small consolation to be found in the vegetated roof. Having greatly disturbed the ecological membrane, intensive vegetated roofs help recreate this membrane and offer it back to the surrounding ecosystem.