Along with other forms of urban greening such as planting trees and constructing green roofs, green walls/living walls provide a host of benefits to the environment, people living and working in the area and to the buildings themselves. This section provides more details on the environment benefits offered by green or living walls.
By using a broad range of plants a green wall can considerably increase the number and variety of insects and birds in a given area, helping to return a more sustainable ecosystem in urban environments.
REDUCED URBAN HEAT ISLAND EFFECT
Urbanised areas have a higher average temperature than surrounding countryside. Increasing vegetation in city hot spots can cool the air and reduce reflected heat. Tests have shown temperature differences of up to 17⁰C between hard and vegetated surfaces in the same location. This heat reduction lowers the requirement for air conditioning and related power demands for a building.
MAX FORDHAM CONSULTING ENGINEERS
During the day plants extract carbon dioxide, carbon monoxide and many other toxins from the air during photosynthesis, resulting in significant reductions in CO2 levels in well vegetated urban areas.
STORM WATER MITIGATION
Increasing the coverage of vegetation can reduce the amount of storm water management required for a building. This is especially useful in older urban areas where excess storm water is combined with wastewater systems.