Green walls and roofs insulate buildings, clean the air, absorb carbon dioxide, reduce noise pollution and can provide habitat for insects. They are increasingly used in cities to help buildings avoid overheating, to cool the air and absorb air pollutants.
Buildings are greened by supporting the growth of plants. This is either done by encouraging climber plants, or through the construction of planter boxes or fixing substrate for plants to grow. Numerous plants, including herbs, wildlife flowers or even edible fruit may be grown on green walls or roofs.
The benefits of green walls and roofs
Green walls improve the aesthetics of a building as well as offering numerous environmental and wellbeing benefits. They can increasingly be found internally as businesses are realising that these natural features improve working environments. They are also now being installed as stand-alone and on-building features outdoors in cities to tackle air pollution as well as the overheating experienced during increasingly hot summers.
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