Savings on cooling and heating. As a natural superinsulator, a green roof can keep a house warmer in the winter and cooler in the summer.
Convection heat loss can be reduced by up to 50% with the use of a green roof, according to German research.
In the spring and summer, Canadian research indicated that a green roof reduces the average daily energy demand for air conditioning by up to 75%.
Reduced influence on noise pollution. A green roof's plant and soil mixture absorb and deflect sounds from the outside.
biodiversity and natural beauty. For aesthetic reasons, green roofs are preferable to other types of roofs, and they also provide residents with an extra level of outdoor living space.
In urban and suburban regions, green roofs fill a hole caused by the development of new homes, providing food and shelter for native birds and insects.
Rainwater discharge has been reduced significantly. During rainstorms, a green roof serves as a sponge, soaking up 40 percent of the water.
Many of the contaminants that precipitation has sucked from the air are then filtered out by plants, soil, and the root system, resulting in considerably cleaner discharge.
Another benefit of using green roofs is that they can help alleviate congested municipal sewer systems by delaying the flow of rainwater into them by roughly 45 minutes.
The air is cleaner and there is more oxygen in it. Increasing the number of plants has been shown to result in cleaner air, as plants absorb carbon dioxide from the atmosphere and produce oxygen as a byproduct of photosynthesis.
In a year, a typical family utilizes more oxygen from plants on a residential green roof than the plants produce.
Urban heat island impact is reduced. The removal of vegetation for the construction of houses, businesses, and parking lots causes the urban (and suburban) heat island effect, which raises the temperature in developed regions.
Smog levels rise, heat-related illnesses worsen, and cooling demand rises as a result of rising temperatures.