Green walls not only look great but they function as vertical gardens to capture, filter and absorb rainwater. Plants also absorb greenhouse gases and clean pollutants from the air. A green wall can contain over a thousand plants, all of which filter air and in offer up energy-rich oxygen.
Green walls protect building envelopes by shielding them from UV radiation, precipitation, wind and corrosive acid rain. Studies have shown that the surface of an exterior green wall is up to 10°C cooler than an exposed wall. Not only do green walls reduce cooling requirements but they also help to mitigate the urban heat island effect. Through the process known as transpiration, plants actually cool their surrounding environment slightly.
Pervious paving is a surface layer that allows rainfall to percolate into the ground where it can make its way back to nearby creeks slowly. Returning the flow to the creeks slowly through the ground rather than all at once through the end of a storm pipe helps to protect creeks from erosion and damage A trickle of water returning to the creeks ensures that they don’t run dry.